WaterSmart Landscape DESIGN FOR HOMEOWNERS · Soil Drainage and Percolation Test (Homeowner’s...
Transcript of WaterSmart Landscape DESIGN FOR HOMEOWNERS · Soil Drainage and Percolation Test (Homeowner’s...
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DESIGN FOR HOMEOWNERS
W E LCO M E !
WaterSmart Landscape
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San Diego County Water Authority
Wholesale water agency created by the State Legislature in 1944
24 member agencies
3.3 million people
920,000 acre service area
s population
Builds, owns, operates and maintains regional water infrastructure
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16% Local Supply
64% Colorado River
20% State Water Project
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WaterSmart is where our San Diego lifestyle and water efficiency meet.
WaterSmart
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San Diego Has Few Natural Water Assets
Very Little Rainfall
San Diego 9.1
*10-year average, 2005-2014
Very Little Groundwater
1946
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694 TAF
Increasing San Diego County's Water Supply Reliability through Supply Diversification
588 TAF
Imperial Irrigation District Transfer
Metropolitan Water District Local Surface Water
GroundwaterRecycled Water
Seawater Desalination
Potable Reuse
All American & Coachella Canal Lining
455 TAF
578 TAF
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93%
44%
38%Population
Jobs
Gross Domestic Product
San Diego County 1990 vs 2016
33%Potable Water Use
49%Gallons per Capita
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Before
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After
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Our goal is to help YOU develop the knowledge and skills
necessary to create your own beautiful, WaterSmart landscape.
DESIGN FOR HOMEOWNERSWaterSmart Landscape
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WaterSmartSD.org
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Download the Presentation
Download Presentations
Watch Videos
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How many of you are here to …
• Reduce your water use?• Learn which plants to use?• Learn how to get curb appeal?• Learn how to make a planting plan?• Learn how to retrofit irrigation?• Reduce maintenance?
Personal Goals
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MAKEOVER SERIESWaterSmart Landscape
Course Goals
Teach Homeowners to:1. Identify Your Landscape Target 2. Create a Basic Plot Plan 3. Evaluate Your Site 4. Design Your WaterSmart Landscape5. Implement Your Plan6. Care for Your WaterSmart Landscape
Register:http://landscapemakeover.watersmartsd.org
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Case Study 1
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After Installation
Case Study 1
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After: Approximately 6 months after installation
Case Study 1
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After: Approximately 1 year after installation
Case Study 1
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After: Approximately 2 years after installation
Case Study 1
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Case Study 1
Close Up Details
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Base Plan
Finished Planting Plan
Bubble DiagramFunctional
Hardscape & Preliminary Planting Plan
LID Plan
Soil & Site Analysis
Irrigation Plan
Steps to WaterSmart Landscape Design Process Overview
Identify YourTarget
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Demolition Contouring Soil Prep Irrigation
Plant Placement
Steps to WaterSmart Landscape Implementation Overview
Installed Two Years Later
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If you don’t know where you’re
going, anywhere will do.
Landscape Target Factors:
• Turf Area• Plant Selection• Irrigation Efficiency
Step 1:Identify Your Landscape Target
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60
50
40
30
20
10
0
Why Remove Turf?
Regional PerspectiveTurf’s Water Needs vs. Annual Rainfall
RequiredZone 4
Additional Water Required
Ave. Yearly Rainfall
Zone 447”
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PLANT FACTOR- represents the estimated percent or portion of supplemental water needed relative to the Eto value of particular location
Source: Landscape Plants for California Gardens by Bob Perry
Step 1:Identify Your Landscape Target
Plant Selection:
Turf
Natives & Mediterranean Plants
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Irrigation Efficiency
ObsoleteConventional Overhead Spray Heads
MediumRotator Nozzles
HighIn-Line Drip emitters Bubblers
Step 1:Identify Your Landscape Target
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Use Pages 8 and 9 in your Homeowner’s Guide
Step 1:Identify Your Landscape Target
Two Factors:• Irrigation Efficiency
• Plant Selection
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Basic Plot Plan: A scale drawing of the property, drawn in accurate proportion using a standard measurement to represent one foot
Legend
N Arrow
Scale: 1/8” = 1”, 1/4” = 1’, 1/10”= 1’
Step 2:Create a Basic Plot Plan
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Step 2:Create a Basic Plot Plan
Scales: Architectural and Engineering
Standard Size Properties:1/4 Scale: 1/4” = 1’ or 1” = 4’1/8 Scale: 1/8” = 1’ or 1” = 8’
Large Size Properties:1/10 Scale: 1” = 10’1/20 Scale: 1” = 20
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Step 2:Create a Basic Plot Plan
Measure your property• Start with one dominant point to measure from (i.e. a wall corner)• Locate features that stay (walls, hardscape, trees, fences, etc.) • Alternate: use outside source (Property Description, Google Earth)
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Step 2:Create a Basic Plot Plan
Using Graph Paper• Select grid paper to match scale• Draw in scale on grid paper• Align “0” and measure• Add Legend:
• Scale • N arrow
¼”=1’0”
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Step 2:Plot Plan: Alternative
Without putting it on paper
Flag Method• Mark flags with selected
plants and size• Place flags for each plant
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Step 2:Plot Plan Alternative
Without putting it on paper
Flag Method (cont’d)• Plan & measure for
mature plants• Rearrange as needed• Count to create plant list• Plant according to flags
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• A watershed is the area of land where all of the water that falls in it and drains off of it goes to a common outlet.
Step 3: Evaluate Your Site: Watershed
What is a Watershed?
Photo: http://sandiegohomesforsale.com/communities/lakeside
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Tecate Divide
Step 3: Evaluate Your Site: Watershed
You live in a Watershed
• San Diego has 11 westward draining watersheds
• Find your watershed: https://cfpub.epa.gov/surf/locate/index.cfm
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You live in a WatershedBenefits to Using a Watershed Approach to Landscaping
• Improves environment• Protects our waters• Preserves our coast• Reduces Beach Closures
from pollution• Saves water in landscape• Saves energy used in water
transport• Water Table
Step 3: Evaluate Your Site: Watershed
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Your yard is a Mini-Watershed
Map your drainage• Where does it flow from?• Where does it flow to?• Gutter Storm Drains Ocean
Step 3: Evaluate Your Site: Watershed
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First FlushCan the polluted water be cleaned?
YES! Healthy soil breaks down pollutants.Can the water be utilized?
YES! It can be stored in • Soil • Rain Barrels• Cisterns
Step 3:Evaluate Your Site: Soil and Watershed
First Seasonal Flush Subsequent Storm Event
Old Town, San Diego
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Step 3:Evaluate Your Site: Soil
Soil: Why Do We Care?
• Soil can cleanse water• Soil can store water • Soil influences everything related to water
• Infiltration• Holding capacity • Movement • Irrigation scheduling
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• Mineral
• Organic
• Pore Space
Step 3:Evaluate Your Site: Soil
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• Mineral
• Organic
• Pore Space
Step 3:Evaluate Your Site: Soil
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Soil TextureParticle
TypeWater
Movement (Drainage)
Water Holding
Nutrient Holding
Sand Fast No No
Silt Medium Medium Medium
Clay Slow Yes, once wet
Rich!
LoamMixture of all particle types
Medium Yes Yes
Step 3:Evaluate Your Site: Soil
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Step 3:Evaluate Your Site: Soil
Determining Soil Texture• Soil Sampling: Dig a hole
• Remove mulch or surface matter• Dig down 12” x 12” x12”• Take sample from side of hole at least 6” down
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Step 3:Evaluate Your Site: Soil
Determining Soil Texture• “Thein Feel Test”
• Wet the soil sample to playdough consistency
• Make a ball and poke it:• Does it fall apart?• Does it hold together?
• Squeeze a ribbon:• Less than 1 inch?• Between 1 inch and 2 inches?• More than 2 inches?
• Wet it excessively and feel it:• Is it slippery?• Is it gritty?
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Step 3:Evaluate Your Site: Soil
• Mineral
• Organic
• Pore Space
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Sustainable Soil
• Soil Food Web• Organisms build soil• Encourage them with
proper organic matter, moisture, oxygen, etc.
Step 3:Evaluate Your Site: Soil
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Soil Food WebBacteria
Weeds
Nematodes
Fungi
Worms
Plants
Step 3:Evaluate Your Site: Soil
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• Mineral
• Organic
• Pore Space
Step 3:Evaluate Your Site: Soil
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Soil Aggregation• Created by bacteria, fungi and humic acid from organic matter• Allows water
• Infiltration / percolation• storage
Step 3:Evaluate Your Site: Soil
Water moves easily through soil with good structure
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Soil Aggregation• Creates soil pores which contain
OWL:OxyenWaterLife
• Purifies runoff water• Creates water holding
capacity
Water Uptake by Plant Roots
Step 3:Evaluate Your Site: Soil
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Step 3:Evaluate Your Site: Soil
Organic Matter• Reverses compaction• Improves root penetration• Improves plant success
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Remediating Compaction
• Add organic matter • Build the health of the soil food web• By the way … ADD ORGANIC MATTER!
• IN the ground: Compost for Soil Amendment when planting
• ON the ground: Mulch after planting
Step 3:Evaluate Your Site: Soil
Compost Soil Amendment MulchIN ground ON ground
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Soil Amendment
• Use compost when planting• Small particles,
usually less than ¼”• Mix compost with backfill soil
• 30% most plants• 15% natives in disturbed soil
• Available in bags or bulk
Amending Soil with Compost
Step 3:Evaluate Your Site: Soil
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Mulch • Blanket over soil surface • Continues to feed the soil as it breaks down• Adds organic matter in areas already planted• Prevents
• Erosion • Evaporation• Weeds• Compaction
Step 3:Evaluate Your Site: Soil
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Mulch Types• Longevity: Wood chips or Bark• Soil Building: chipped tree trimmings or coarse compost
• Varied particle sized• Texture
• Water passes through• Holds in place on slopes and in wind
Brush or Composted Mulch Chipped Mulch Blended Mulch
Step 3:Evaluate Your Site: Soil
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Products at Miramar Greenery: Soil Building
Step 3:Evaluate Your Site: Soil
Material Type Description Price/Cubic Yard (incl. tax & loading)
City Resident Self-Loading Composted 4" Mulch
Up to 2 cubic yard FREE
1/2" Compost 10 week processing of yard waste and food waste, screened to 1/2"
$12
4" Mulch 2 week processing of yard waste only $ 52" Mulch - Preferred Mulch 2 week processing of brush and branches
(no curbside material)$12
Coarse Chips (2" Compost Overs)(some plastic contamination)
10 week processing of yard waste & food waste,screen to 1/2" - 2"
$ 5
Natural Wood ChipsFine for Paths
Logs ground to 2" - 4" and screened to remove fines $24
Natural 1/2" Fines Logs ground and screened to 1/2" $24
Plain Wood ChipsFine for Paths
Dimensional lumber ground to 2" - 4" $24
Colored Wood Chips: red & brown
Dimensional lumber ground to 2" - 4" and colored with non-toxic dye
$34
Abcdefg Do not use for sheet mulchingRecommended
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Mulch Application:• After planting, lay 4” layer on top of soil• Leave open space around plant stem or crown • Add additional mulch when areas are thin• Rule of thumb:
• 1 1/4 CY covers about 100 sq. ft. at 4” depth
Brush Mulch / Chipped Mulch
Step 3:Evaluate Your Site: Soil
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No Weed Cloth• Reduces movement of organics• OK under Rock or gravel
Step 3:Evaluate Your Site: Soil
Do NOT use weed cloth
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How does your soil handle water?• Organic matter remediates compaction• Percolation and infiltration effected by
• Soil texture• Soil aggregation• Layers of compaction or rock
Step 3:Evaluate Your Site: Soil and Watershed
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Step 3:Evaluate Your Site: Soil and Watershed
Soil Drainage and Percolation Test (Homeowner’s Guide)
Day 11. Dig one cubic foot hole (12”x12”x12”)2. Fill the hole with water to saturate the soil 3. Let drain overnight
Day 21. Lay a stick over the hole2. Refill the hole with water to the
level of the stick3. Wait one hour4. Measure how far the water level has
dropped to determine the infiltration rate per hour
Note: Use the soil from the hole to do a worm count & test the texture of your soil
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Soil Drainage Field Percolation Test Inches per Hr. Drainage Solutions
Less than 1” Add organics Create moundsSelect tolerant plants
1”- 3”
More than 3”Add organicsCreate moundsSelect tolerant plants
Step 3:Evaluate Your Site: Soil and Watershed
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Back to the First Flush
Step 3:Evaluate Your Site: Soil and Watershed
Old Town, San Diego
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Step 3: Evaluate Your Site: Watershed and Soil
Sustainable Soil
Soil organics
Soil aggregation
Percolation
Water storage
Stormwater management
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Step 3: Evaluate Your Site: Watershed and Soil
WaterSmart Sustainable Landscapes Program (SLP) Incentive:
• $1.75 per SF of turf removed (Taxable Income)• Must have stormwater retention for 1” rain:
Minimum 400 SF of collection area and 33 CF retention area• Between 500 – 3,000 SF of turf removed• Plant coverage of 50% at maturity• Front / Side / Rear are all eligible• Accepted to SLP Incentive only once: Do all areas together • Do NOT remove your turf (dead or alive) before you are accepted
into the program! • Info:
http://sustainablelandscapessd.org/incentives/
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Step 3: Evaluate Your Site: Watershed and Soil
WaterSmart Sustainable Landscapes Program (SLP) Incentive:
• Taking this class fulfills the education requirement.Code to bypass the SLP Quiz is DFH-2016.
• Info: http://sustainablelandscapessd.org/incentives/
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Step 3: Evaluate Your Site: Watershed and Soil
WaterSmart Sustainable Landscapes Program (SLP) Incentive:
• Application Spreadsheets:
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SLP Incentive First Flush Capture: Non-permeable• Roofs, Concrete,
Asphalt, Grouted Pavers
Semi-permeable• DG, Cobble, Gravel,
Compacted Soil
Permeable• Landscape areas,
Amended or Mulched Soils
Step 3:Evaluate Your Site: Soil and Watershed
non-permeable
semi-permeable
permeable
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SLP Incentive First Flush Capture What is 1” of storm water?
1,000 SF roof has • 620 gallons• 83 Cubic Feet
Detention Area of 86 CF:• Basin 12’ x 24’ x 4” deep
620 gallons
per 1,000 SF1” Rainfall
Step 3: Evaluate Your Site: Watershed and Soil
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SLP Incentive Minimum
400 SF (minimum) roof : • 1” of storm water• 248 gallons• 33 CF
Solutions:• Rain barrels:
5 @ 55 gal. ea.• Basin:
10’ x 12’ x 4”• Swale / Dry Stream:
13’ x 2’ 6” x 1’ deep (average)
248gallons
per 400 SF1” Rainfall
Step 3: Evaluate Your Site: Watershed and Soil
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First Flush Techniques: Keep water on siteSlow-Store-Spread-Sink
• Slow down the speed of the flow• Store in basins• Spread over wider area• Sink into healthy soil
Step 3:Evaluate Your Site: Soil and Watershed
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First Flush Techniques: Pitfalls & Problems
Setbacks for infiltration areas at least:• 5’ from foundations• 10’ from other buildings • 3’ from hardscape
Concerns:• Expansive clay soil• Poor percolation
Step 3:Evaluate Your Site: Soil and Watershed
Rain barrel connected to roof drain
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Slopes & Hillsides Cross Section:
Step 3:Evaluate Your Site: Soil and Watershed
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Basin Cross Section:Basin 14’ long x 12’ wide x 4” deep holds 50 CF
Step 3:Evaluate Your Site: Soil and Watershed
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Swale or Dry Stream Cross Section:Swale: 30’ long x 3.5’ wide x “V” cross section: 1’ deep in center holds 50 CF
Step 3:Evaluate Your Site: Soil and Watershed
“Flat-U” Cross Section Use average width and depth to determine holding area
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First Flush Techniques:
Dry Stream
Infiltration Trench
Step 3:Evaluate Your Site: Soil and Watershed
Rain barrel connected to roof drain
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First Flush Techniques:
Cisterns
Dry Well
Step 3:Evaluate Your Site: Soil and Watershed
Rain barrel connected to roof drain
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First Flush Techniques: Rain Barrels
• Sustainable Landscape Program Incentive allows rain barrel retention only if project turf area is l,000 SF or less
• Do NOT use First Flush diverter • Plan for overflow to protect foundation • Check WaterSmartSD.Org for current
rain barrel & cistern incentives• First Flush from 1,000 SF roof, 1.0” rain
event is 83 CF:• Requires eleven 55 Gal. rain barrels
Step 3:Evaluate Your Site: Soil and Watershed
Rain barrel connected to roof drain
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LID= Low Impact Development = Retain Storm water1. Evaluate your mini-watershed
Use Google Earth to see your roof lines
Step 3:Evaluate Your Site: Soil and Watershed
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2. Make notes on your LID Base Plan (L-2)Show water flow direction, gutters, downspouts, slopes, puddles, & ridgelines
Step 3:Evaluate Your Site: Soil and Watershed
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3. Define your stormwater collection areaBreak the area into geometric shapes
Step 3:Evaluate Your Site: Soil and Watershed
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4. Determine the SF of your collection areaFind the measurements & SF of the collection area
• Measure in scale from LID Plan• Estimate from SF on LID Plan• Google Earth measurement system
Step 3:Evaluate Your Site: Soil and Watershed
Also: daftlogic.com/projects-google-maps-area-calculator-tool.htm
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4. Determine the SF of your collection area• Enter measurements in First Flush Volume Calculator spreadsheet• Find the SF of each area• Add all areas for total SF
Step 3:Evaluate Your Site: Soil and Watershed
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5. How much water can you capture?• Apply your SF to the First Flush Volume Calculator to determine the
CF of storm water
Step 3:Evaluate Your Site: Soil and Watershed
Volume
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6. Draw suggested setback lines for infiltration areas:• 5’ from foundations and property lines• 3’ from impermeable surfaces such as sidewalks and drives• No more than 12” below finish grade
Step 3:Evaluate Your Site: Soil and Watershed
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7. Use the spreadsheet to determine the required Detention Area• Be sure that the Infiltration / Detention Area is at least equal to the CF of stormwater
collected (cell turns from blue to green)
Step 3:Evaluate Your Site: Soil and Watershed
First Flush Technique used: Basin: 16’ x 9’ x 4” deepRetains: 43 CF of storm water
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Step 3:Evaluate Your Site: Observations
Site Observations• Starting point of a successful design• Take photos• Assess existing situation
1. Stormwater / LID Conditions2. Structural Conditions3. Design Considerations4. HOA requirements5. Growing Conditions
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Landscape design and other design areas
• Similarities:• Same basic elements & principles
• Differences:• Three-dimensional • Living• Seasonal & ever changing
Step 4: Design Your WaterSmart Landscape
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Step 4: Design
http://komcakehier.weebly.com/birthday-cakes.html
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Aesthetics: BalanceSymmetrical Balance
both sides even or visually identical - a mirror image. Formal.
Asymmetrical Balance different-sized elements balance one another by having equal visual weight. Informal.
SYMMETRICAL BALANCE
ASYMMETRICAL BALANCE
Step 4: Design: Background Concepts
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Aesthetics: Proportion
• Relative size of objects within the composition:Large tree can make a house appear smaller
• Most SoCal homes areout of scale to their lots
• Plantings may grow out of scale
Step 4: Design: Background Concepts
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Aesthetics: ColorMost powerful of art elementsEstablish harmony
• Soothing: low contrast, monochromatic, cool• Energizing: contrast, complimentary, warm
SECONDARY COLORSPRIMARY COLORS TERTIARY COLORS
Step 4: Design: Background Concepts
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Aesthetics: ColorSimple Color Harmony
Step 4: Design: Background Concepts
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Aesthetics: Contrast• Provides interest and impact• Creates Focal Points and catches the eye• Contrast plant textures, values, and colors
Step 4: Design: Background Concepts
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Aesthetics: Unity• Provides cohesive calm• Repeat plant selections throughout the plan
including both sides of driveway
Step 4: Design: Background Concepts
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Curb Appeal: Billboard Effect• Groups or drifts of plants catch the moving eye • High contrast• Simple
Step 4: Design: Background Concepts
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Curb Appeal: Path to the door
• Direct line of sight or visual cues
• Generous path welcomes guests
• No over grown areas
Step 4: Design: Background Concepts
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Curb Appeal: Path to the door
• Direct line of sight or visual cues
• Generous path welcomes guests
• No over grown areas
Step 4: Design: Background Concepts
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Plant Functions in Design:Climate Mitigation
• Tradeoffs:• Deciduous / Evergreen• View vs. Temperature
Step 4: Design: Background Concepts
Euphorbia cotinifolia Caribbean Copper Plant
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Plant Functions in Design: Security• Thorns as a
deterrent
Step 4: Design: Background Concepts
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Plant Functions in Design: Privacy
• Screen ugly views or create privacy• Pick a cultivar that doesn’t need frequent pruning
Step 4: Design: Background Concepts
Podocarpus macrophyllus maki Shubby Yew
Pittosporum tenufolium ‘Silver Sheen’
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Explore Design as 2 parts:
• Shaping Spaces• How will you use the space?
• space arrangement, location of major elements• Design in 3D• Form follows Function
• Planting design• How the space is filled with plants for effective
design
Step 4: Design: Functional Design
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How will you use your space?Is your space an Outdoor Room, a Passageway, or a Garden?
Step 4: Design: Functional Design
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Outdoor Rooms• Walls
• Do NOT need to be solid to create sense of enclosure
• Floor • Flagstone, DG, mulch
or groundcover
• Ceilings • can be canopies or arbors
Step 4: Design: Functional Design
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Passageway• Way-finding or easy to follow• Open path for curb appeal • “Peek-a-view” for mystery
Step 4: Design: Functional Design
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View Garden• Enjoy from a distance• Treat as a canvas• Include paths for maintenance & strolling
Step 4: Design: Functional Design
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View GardenBorrowed Views
Step 4: Design: Functional Design
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View GardenCreated Views
• Use an accent feature to create a focal point
Step 4: Design: Functional Design
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Design in 3DCreate vertical dimension with
• Layered planting
Background: 6’+
Middleground: 4’+/-
Foreground: 0-12”
for islands
Step 4: Design: Functional Design
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Form Follows Function• How will the space be used?• What activities will occur there?
• Active Uses: cooking, eating, entertaining, sports, play, pool, pets, food
• Passive Uses: resting, meditation, viewing
• Does the current layout “work” or does it need to change to be more functional?
• Lose the bed lines! • Don’t think of your planting bed as a separate area … plan
the entire space!
Step 4: Design: Functional Design
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Form Follows FunctionGet started: Functional Spaces & Hardscape
Create a Functional Bubble Plan • Think
• How the space could be used, NOT how it IS used.
• Will it be an outdoor room, garden or pathway?
• Do you want add • Seating areas? • Pathways through
planting “islands”?• Meander through your
yard/slope with a circular route?
Step 4: Design: Functional Design
Think outside the box!
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Form Follows FunctionGet started: Functional Spaces & Hardscape
Create a Functional Bubble Plan • Think: How the space could be used, NOT how it IS used.
Step 4: Design: Functional Design
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Form Follows FunctionGet started: Functional Spaces & Hardscape
Is it an Outdoor Room?
Step 4: Design: Functional Design
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Form Follows FunctionGet started: Functional Spaces & Hardscape
An Outdoor Room with a dry stream bed?
Step 4: Design: Functional Design
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Form Follows FunctionGet started: Functional Spaces & Hardscape
Is it a Passageway?
Step 4: Design: Functional Design
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Form Follows FunctionGet started: Functional Spaces & Hardscape
Is it a Garden?
Step 4: Design: Functional Design
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Form Follows FunctionGet started: Functional Spaces & Hardscape
Create a Planting Area Bubble Plan• Show basic planting areas• Locate planting heights of
• High• Medium • Low
Design Hardscape• Check hardscape in place and
correct• Add desired elements
Step 4: Design: Functional Design
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Creating Your Plant Palette
• How to Choose?• What do you like?• Climate appropriate?• Place appropriate?• Does it fill a design function?
Step 4:Design: Plant Selection
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Climate Appropriate PlantsLeaves are
Step 4:Design: Plant Selection
Leathery Small
Silvery Solar tracking
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Climate Appropriate:Where to get plant suggestions?WaterSmart Plant Palettes: Homeowner’s Guide and Online
• Mediterranean• Asian• Tropical• Contemporary• Native• Shade• Groundcover options
Step 4:Design: Plant Selection
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Where to get plant suggestions?
WaterSmart Plant PalettesMediterranean
CC BY 2.0, Karen Roe
Step 4:Design: Plant Selection
Lavender Rosemary
Olives
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Where to get plant suggestions?
WaterSmart Plant PalettesLow Water Asian
Step 4:Design: Plant Selection
Iris douglasiana Dietes African Iris Nandina
Juniperus Juniper
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Where to get plant suggestions?
WaterSmart Plant PalettesLow Water Tropical
Step 4:Design: Plant Selection
Lantana Alstroemeria
Strelitzia Bird of ParadiseEuphorbia milii Crown of Thorns
Bromeliads
Plumeria
Bougainvillea Geraniums Bird of Paradise
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Where to get plant suggestions?
WaterSmart Plant PalettesLow Water Contemporary
Step 4:Design: Plant Selection
Anigozanthos Kangaroo PawAssorted Succulents
Fire Sticks Kalanchoe thyrisifolia Agave Attenuata
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Where to get plant suggestions?
WaterSmart Plant PalettesCalifornia Natives
Step 4:Design: Plant Selection
Heteromeles arbutifoliaToyon
Romneya coulteriMatilija Poppy
EpilobiumCalifornia Fushia
Saliva clevelandiiCleveland Sage
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A note about Natives …
WaterSmart Plant PalettesCalifornia Natives
• Adapted for our climate, soils• Provide habitat and attract wildlife
Native plants need:• Little or no summer water• Little or no fertilizer • No pesticides• Less maintenance
Some native plants are summer deciduous
Step 4:Design: Plant Selection
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Where to get plant suggestions?
WaterSmart Plant PalettesShade Plants for Dry Areas
Step 4:Design: Plant Selection
Bromeliads Clivia Dianella variegata Schefflera arboricola variegata
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Walkable Groundcover Options:Dymondia margaretae (Silver Carpet)
Lippia nodiflora (Kurapia)
Step 4:Design: Plant Selection
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Flat Green Groundcover Options:Fragaria chiloensis (Beach Strawberry)
Achillea millefolium (Yarrow)
Step 4:Design: Plant Selection
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Mature Size PlantResearch the “Finished Size”
Agave americana marginata
Step 4:Design: Plant Selection
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Mature Size PlantPick the right size cultivar for the right place
Step 4:Design: Plant Selection
Carissa macrocarpa / Natal PlumSpecies ‘Boxwood Beauty’ ‘Green Carpet’
8’ x 8’ 2’ x 2’ 1’ – 1 ½’ x 4’
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Step 4:Design Your WaterSmart Landscape
Growing ConditionsExposure
• Soil type• Drainage
Full ShadeFull Sun
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Water RequirementsWater Use Coefficient of Landscape SpeciesWUCOLSSouth CoastalSouth Inland
Plant Search:http://ucanr.edu/sites/WUCOLS/Plant_Search_Instructions/
Escondido, Rancho Bernardo, San Marcos, Poway, Lakeside , Ramona
San Diego, Chula Vista, Del Mar, La Jolla, Carlsbad, Oceanside, Vista, El Cajon
Step 4:Design Your WaterSmart Landscape
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Hydrozoning• Group plants with like water needs together,
according to irrigation zone• Do not put water needy plants next to low-water
plants • Research:
• Water Use Classification of Landscape Species (WUCOLS) rating
• Plant palettes• Sunset Western
Step 4:Design Your WaterSmart Landscape
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Plant Research: How do I get to know this plant?
WaterSmart Plant Palettes
Step 4:Design: Plant Selection
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WaterSmart Sustainable Landscapes Program (SLP) Incentive:
• Spreadsheets: Plant Coverage Worksheet• Must have 50% plant coverage at maturity• Moderate water plants less than 30%
Step 4:Design: Plant Selection
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WaterSmart Sustainable Landscapes Program (SLP) Incentive:
Step 4:Design: Plant Selection
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WaterSmart Sustainable Landscapes Program (SLP) Incentive:
Step 4:Design: Plant Selection
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Plant Research: How do I get to know this plant?
Sunset Western Garden Book
Specific Plant Info• Water usage• Mature Size• Cultivars• Growing conditions
Step 4:Design: Plant Selection
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Step 4:Design: Plant Selection
Find Your Sunset Western ZoneZone 24
• Mild maritime climate, mild winters, cool summers, rarely freezes
Zone 23• Warmer than Zone 24,
usually frost-freeZone 21
• A mix of maritime & continental influence, colder in winter
http://www.sunset.com/garden/climate-zones/sunset-climate-zone-san-diego-area-00418000067314/
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Explore Design as 2 parts:
Physical site design• How the space is arranged,
location of major elements
Planting design and placement
• How the space is filled with plants for effective design
Step 4: Design: Planting Design & Placement
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Putting It Together: Size your plants• Draw at Mature Size to match Bubble Diagram• Avoid overplanting• Allow room to grow• Understand you may
need to edit and thin later
Step 4: Design: Planting Design & Placement
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Drawing Plants in Scale• Pencil in the plants for your space:• At 1/4” scale = 1’- 0”
• 3’ diameter shrub drawn as 3/4” diameter circle
• 12’ canopy tree drawnas 3” diameter circle
Step 4: Design: Planting Design & Placement
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Drawing Plants in Scale• Determine the mature size of the plant• Use the mature size• Find appropriate circle
on template
• Example: • Bush is 3’ at maturity• In 1/4 scale, use 3/4”
diameter circle
Step 4: Design: Planting Design & Placement
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Drawing Plants in Scale
Step 4: Design: Planting Design & Placement
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Drawing Plants in Scale
Step 4: Design: Planting Design & Placement
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Anatomy of an Irrigation System
Step 4: Design: Irrigation
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Step 4: Design: Irrigation
Pressure Test• Use meter on last head on valve
• Range should be between 25 psi and 40 psi
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Sprays: Low Pressure
Step 4: Design: Irrigation
Donuts formed by poor coverage
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Sprays: High Pressure
Step 4: Design: Irrigation
Misting
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Step 4: Design: Irrigation
Pressure Regulation
At the point of connection (POC) At the head At the valve
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Step 4: Design: Irrigation
Overhead or Drip?
Choose Overhead Spray for:• Large areas of turf replacement ground cover
(i.e. dymondia, Beach Strawberry, etc.)• The existing overhead system has good existing
coverage
Choose Drip for:• Small, oddly shaped planting areas• Mixing of plants with differing water requirements in
the same valve area
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Step 4: Design: Irrigation
Advantages of Efficient Overhead Spray
• Simple to retrofit existing spray hardware • Can match precipitation rate of drip• Simpler to troubleshoot than drip• May provide better coverage for groundcover
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Step 4: Design: Irrigation
Advantages of Drip Systems
• Drip is the most efficient irrigation delivery type
• Reduces weed growth by targeted water application
• Prevents runoff and erosion
• Low precipitation rate
• No trenching means less digging
• Emitters provide consistent water application
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Step 4: Design: Irrigation
Filters
At the headAt the valve
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Step 4: Design: Irrigation
Drip Retrofit Systems• Replace existing pop-ups with
retrofit such as Rainbird R-1800
• Use subsurface tubing with emitter valves, not micro spray and 1/4”spaghetti lines
• Cover with mulch
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Step 4: Design: Irrigation
Advantages of In-Line Drip Emitters
• Provide consistent precipitation rate throughout line
• Less prone to clogging and damage than micro spray
• Easy to install
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Step 4: Design: Irrigation
In-line Drip lines
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Step 4: Design: Irrigation
Irrigation Plan• Create an irrigation plan based on your completed planting
plan and hydrozones.• Select a category of irrigation (rotor, drip, etc…)• Prepare a materials list and fill in spaces on your legend
(components and quantity).
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Step 4: Design: Irrigation
What is a Controller Program?
• A set of instructions stored in the controller
• Different irrigation schedules• Irrigation days – how often?• Start times – at what time?• Water times – how long?
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How much water does your landscape need?
…. It depends.
Step 4: Design: Irrigation
• Soil Texture• Precipitation Rate• Plant Demand
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Irrigation Scheduling: InternetBeWaterWise.com
Step 4: Design: Irrigation
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Turf Removal with Sheet Mulching
1. Prepare the site2. Edging, mounding & contouring3. Ensure irrigation of trees and plants4. Plant large plants5. Apply weed barrier6. Layer compost and mulch
Step 5: Implementation: Turf Removal & Sheet Mulching
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1. Prepare the site• Call 811 first!
• Hardscape prep:• Layout areas which will become paths and patios. • These areas will NOT require mulching and will need to
be excavated. • Lay irrigation lines beneath areas before completing
hardscape. • Remove woody or invasive plants (warm season turf)• Flag sprinkler heads• Soak the area with water
Step 5: Implementation: Turf Removal & Sheet Mulching
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2. Edging, Mounding & Contouring• Make room for the mulch: Cut lawn 12 inches away from
concrete to 3” below concrete level.
Step 5: Implementation: Turf Removal & Sheet Mulching
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2. Edging, Mounding & Contouring
• Create mounds with removed sod by facing turf side down or discard removed sod
• Contour as needed
Manual “Grubbing”
Gas Powered Sod Cutter
Step 5: Implementation: Turf Removal & Sheet Mulching
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3. Ensure Irrigation of Trees and Large plants
• Add bubblers or drip irrigation if needed
In-line drip irrigation can be expanded as tree growsBubbler HeadDrip Irrigation
Step 5: Implementation: Turf Removal
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3. Ensure Irrigation of Trees and Large plants
• Add bubblers or drip irrigation if needed
In-line drip irrigation
Step 5: Implementation: Turf Removal & Sheet Mulching
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4. Plant Large Plants
• 5 gallon and larger• Hole
• As deep as pot, 2 x wide as pot• Rough sides• Fill with water before planting
• Plant crown above soil level• Loosen roots
• Amend Back Fill Soil• Add 30% compost to soil removed
from hole (3 scoops compost : 7 scoops soil)
• Natives: If soil is disturbed, add15% compost to soil removed from hole.
• Use mixture to backfill planting hole.
Step 5: Implementation: Turf Removal & Sheet Mulching
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5. Layers
• Cardboard:• Costco, Best Buy• http://www.papermart.com/regular-b-flute-corrugated-paper-rolls/id=4609#4609
• Rule of thumb for coverage:1 Cu. Yd. covers 100 SF @ 3” depth
Step 5: Implementation: Turf Removal & Sheet Mulching
(1.3”)
(3”)
Water
Water
Water
Water
Water
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Weed barrier around large plants• NOT weed cloth (optional under rock or DG)• Newspaper / painter’s paper• Cardboard (warm season turf)• Overlap by 6-8 inches• Cover all ground except where there are plants
Paper & Cardboard Weed Barrier
Do NOT use weed cloth
Step 5: Implementation: Turf Removal & Sheet Mulching
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Watering• Water between layers• Be sure to continue watering
existing trees while mulching
Step 5: Implementation: Turf Removal & Sheet Mulching
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Notify your neighbors first!Sheet Mulching
Step 5: Implementation: Turf Removal & Sheet Mulching
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Cover compost, newspaper and cardboard layers with 3” of SOIL BUILDING mulch, not wood chips
Sheet Mulching
Step 5: Implementation: Turf Removal & Sheet Mulching
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Hardscape and Sheet MulchingRemove turf, don’t Sheet Mulch underneathHardscape requires soil compaction beneath
Step 5: Implementation: Hardscape
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7. Planting Fast Method
• Steps: • Install hardscape • Contour landscape for stormwater detention• Place rocks• Plant large plants • Sheet mulch between and around plants• Or Sheet mulch entire area, then pull back mulch, cut hole in
cardboard, plant and replace mulch
• Rooting Groundcovers:• Remove turf completely, work in compost, and then plant
groundcover with mulch around it• Plants require contact with soil, not just mulch
Step 5: Implementation: Turf Removal & Sheet Mulching
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7. Planting Traditional Method
• Steps: • Install hardscape• Wait until Sheet Mulching has completed breakdown of sod and
cardboard before planting, taking 6+ months • Contour landscape for stormwater retention• Place rocks• Plant
• Rooting Groundcovers:• Let sheet mulching complete the process or remove turf
completely, work in compost, and then plant groundcover • Plants require contact with soil, not just mulch
Step 5: Implementation: Turf Removal & Sheet Mulching
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Know your Turf Type to Remove EffectivelyTurf Type Dormant
SeasonActive
SeasonGrowth
formSeeds Common
TypesKill
Method
Cool Season
Winter Summer Small tuffs
Dwarf Tall Fescue (common locally), Perennial Ryegrass, Annual Ryegrass, Blue Grass
Sheet Mulch
Warm Season
Winter Summer Creeping Stolons
Bermuda grass, Zoysiagrass, St. Augustine Grass, Kikuyu grass
Solarization orChemicalFollowed by Sheet Mulching
Step 5: Implementation: Turf Removal & Sheet Mulching
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Warm Season Turf Issues:
• Very resilient • May break through: watch for regrowth and remove• Requires additional pre-treatment
Step 5: Implementation: Turf Removal & Sheet Mulching
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Warm Season Turf Pre- Treatment Methods:• Complete Sod Removal
• Sod goes to landfill, cannot recycleOr• Solarization
• Only with heat & sun• 8-12 weeks
Or• Non-toxic herbicides
• Multiple applications while growing
Follow with Sheet Mulching
Step 5: Implementation: Turf Removal & Sheet Mulching
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Step 5: Implementation: Sequence
Do it yourself or Professional Contractor What is right for you?• Tradeoff: Cost vs. Labor & Time• Option: Be the General Contractor yourself
Installation or Repair:• California Landscape Contractors Association (CLCA)
http://www.clcasandiego.org• Certified Irrigation Professional www.Irrigation.org • Contractors State License Board (CSLB)
http://www.cslb.ca.gov/Consumers/• YouTube Instructional Videos
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Step 6: Maintenance: Irrigation
Irrigation Maintenance
• Adjust run time for season:• 1. Winter• 2. Fall & Spring• 3. Summer
• Check for leaks and fix leaks promptly• Flush drip systems and check filters to
reduce clogging• Adjust sprayheads to prevent
overspray on hardscape
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Step 6: Maintenance: Plants
Plant Maintenance
• Amend soil with compost and mulch regularly • Remove weeds • Monitor plant health • Minimize the use of
non- organic chemicals• Start with a hard spray
of water• Use insecticidal soap
or other non-toxic pest killer
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QUESTIONS?
Apply for the WaterSmart Landscape Makeover Series:
http://landscapemakeover.watersmartsd.org/ Presentation Slides at:http://www.watersmartsd.org/programs/watersmart-landscape-design-homeowners-workshop