AGEH Hort 29 McConnell Arboretum and Gardens Fall 2013.
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Transcript of AGEH Hort 29 McConnell Arboretum and Gardens Fall 2013.
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AGEH Hort 29McConnell Arboretum and Gardens
Fall 2013
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Allium tuberosumGarlic Chives
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Allium tuberosumGarlic Chives
• Flowers smell like violets
• Leaves have a mild garlic flavor
• Plant bulbs in well-drained soil
• Lift and divide bulbs only after clumps become crowded
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Allium tuberosum
Garlic Chives in the garden-grows slowly in expanding clumps
Garlic Chive seeds
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Allium tuberosumGarlic Chives
• Leaves and flower stalks used as a flavoring similar to chives in foods in Asia and Southeast Asia.
• Plant can become invasive once it is established.
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Anemone X hybrida, Japanese anemone,
buttercup family, Ranunculaceae
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• Perennial from rhizomes, native to Asia; dies to ground in winter
• Basal leaves compound, leaflets lobed and toothed
• Flowers with numerous stamens and pistils
• Best with afternoon shade in Redding; moderate water
• Choose while in bloom for accurate color
Anemone X hybrida, Japanese anemone,
buttercup family, Ranunculaceae
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Aster novae-anliae‘Purple Dome’
New England Aster
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Aster novae-angliae ‘Purple Dome’
• Native to eastern US and Canada
• Introduced to Europe in 1710
• Common garden escape alongside roads and disturbed areas
• Tolerant of wet soils where they may reseed
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Bambusa multiplex, ‘Alphonse Karr’ bamboo, grass family, Poaceae
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Bambusa multiplex, ‘Alphonse Karr’ bamboo, grass family
• Clumping bamboos are the safest• Running types spread incredibly and need
underground barriers for control• Culms of this form striped pink and green on
yellow (jazzy)
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Berberis thunbergii, Redleaf Japanese barberrybarberry family, Berberidaceae
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Berberis thunbergii, redleaf Japanese barberry
• Deciduous shrub to 6 ft or more, depending on the cultivar chosen
• Quite spiny--spines are modified leaves formed on long shoots. In the axils of the spines, are normal leaves of short shoots.
• Purple color becomes redder in fall
• Needs moderate water
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Cyperus alternifolius, umbrella plant, sedge family, Cyperaceae
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• Native to Africa• Vigorous, perennial water
plant• Sun or shade, but need
lots of water (can grow in a container with a saucer)
• Effective in, or next to, ponds
Cyperus alternifolius, umbrella plant, sedge family, Cyperaceae
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Echinacea purpurea Purple Coneflower
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Echinacea purpureaPurple Coneflower
• Native to eastern North America
• Pollinated by butterflies and bees
• Needs at least partial sun
• Thrives in dry or moist soil
• Slugs eat this plant
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Echinacea purpureaPurple coneflower
• Roots and sometimes flowers used
• Antidepressant properties• Stimulates the immune
system to make more cells and increase activity
• Prevents infection when used to treat wounds
• Use in AIDS infections is controversial
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Equisetum hyemale, horsetail horsetail family, Equisetaceae
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Equisetum hyemale, horsetail
• NATIVE to California, and all of North America
• Rushlike spore-producing survivor of the Carboniferous age, when they were 30 ft tall;
• Vigorous perennial; keep enclosed in a pot; weedy in damp areas
• Cell walls have silica—’scouring rushes’
• Poisonous to horses
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Euphorbia rigidaGopher Spurge
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Euphorbias
• All spurges exude milky latex when cut—irritating to skin
• Odd flowers with naked pistils, turning into three-lobed capsules
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Euphorbia rigidaGopher Spurge
• Native to Mediterranian and Middle East
• Considered a weed there!
• Americans and Brits use it in their gardens
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Euphorbia rigidaGopher Spurge
• Research is being done to use as a biofuel
• Reseeds in areas• Appeared
spontaneously in California wildlands
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Festuca‘Siskiyou Blue’Fescue
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Festuca ‘Siskiyou Blue’Fescue
• Hybrid with both native and European heritage
• Plant in sun• Tolerates
considerable shade• Prefers good
drainage• Needs extra water in
Redding heat
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Fremontodendron californicum, flannelbush
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Fremontodendron californicum, flannelbush
mallow family, Malvaceae
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Fremontodendron californicum, flannelbush
• NATIVE to California, Arizona, Baja Calif.
• Evergreen shrub with thick, alternate, lobed leaves covered with star-shaped, irritating hairs
• Showy yellow 5-lobed flowers
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Grevillea rosmarinifoliarosemary grevillea
protea family, Proteaceae
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Grevillea rosmarinifoliarosemary grevillea
protea family, Proteaceae
• Prickly evergreen shrub, red or pink-flowered, native to SE Australia
• This is one of many grevillea species & cultivars—others differ in flower color, leaf width, plant height
• The protea family only grows in the southern hemisphere, & includes the genus Macadamia (nuts!)—Macadamia is the only food plant of significance that is native to Australia
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Hedychium coronariumOrnamental Ginger
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Hedychium coronariumOrnamental Ginger
• Native to the Himalayas
• Plant spread by rhizomes
• Naturalized in Hawaii, invasive species there
• Fragrant blooms• National Flower of
Cuba• Needs moderate to
high humidity
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Miscanthus sinensis, Japanese silver grass, grass family, Poaceae
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Miscanthus sinensis, Japanese silver grass
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Miscanthus sinensis, Japanese silver grass
• Clump formers, in many sizes and forms
• Prune all in late Jan/Feb to allow for new growth, or old leaves scatter all over the garden
• Need sun, moderate water
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Mentha spicataSpearmint
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Mentha spicataSpearmint
• Mediterranean native• Spread rapidly by
underground stems and can be quite invasive
• To keep them in bounds grow in pots or boxes
• Light moist soil, regular water and prefers partial shade
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Mentha spicataSpearmint
• Attracts bees and other insects
• Leaves used as flavoring fresh, dried or frozen
• Steeped tea used as treatment for stomach ache
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Muhlenbergia rigens, deergrass grass family, Poaceae
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Muhlenbergia rigens, deergrass grass family, Poaceae
• NATIVE to SW North America
• Large clump forming perennial grass with very narrow long inflorescences
• Widely used in xeriscaping and native landscape restoration
• Looks better with some irrigation
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Myrtus communis, myrtle, myrtle family, Myrtaceae
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Myrtus communis, myrtle, myrtle family, Myrtaceae
• Native to Mediterranean• Hardy to 14 degrees F• Comes in green,
variegated, small-leaved cultivars; will take partial shade
• Needs little to moderate water
• Can be sheared• Aromatic foliage, berries
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Nepeta X faassenii, catmint mint family, Lamiaceae
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Nepeta X faassenii, catmint
• As mint family member, has opposite leaves, square stems, bilabiate flowers
• Flowers in interrupted terminal spikes
• Deciduous perennial related to catnip
• Native to the Mediterranean• Cut back after flowering to keep
compact and get more flowers
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Phlomis fruticosa, Jerusalem-sagemint family, Lamiaceae
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Phlomis--Jerusalem-sage• As mint family member, has
opposite leaves, square stems, bilabiate flowers
• Flowers in axillary clusters called verticillasters
• Stems and foliage are furry• Evergreen shrub with yellow
flowers• Native to the Mediterranean
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Pontederia cordata, Pickerelweedpickerweed family, Pontederiaceae
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Pontederia cordata, Pickerelweed ,
• Aquatic perennial native to eastern North America
• 4 ft high, 2 ft wide, leaves and flowers above surface of water. Often grown with water lilies, needs 1 ft of water, dormant in winter
• Takes full sun or part shade
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Punica granatum, pomegranateloosestrife family, Lythraceae
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Punica granatum, pomegranateloosestrife family, Lythraceae
• Deciduous , thorny small tree or shrub (dwarf form available)
• Lanceolate leaves turn yellow in fall
• Scarlet flowers attract hummingbirds
• Fruit a leathery-skinned berry with numerous seeds; the edible red fleshy seed covering is called an aril
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Ruellia brittoniana, Mexican petuniaacanthus family, Acanthaceae
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Ruellia brittoniana, Mexican petunia•
Prefers fertile soil with regular moisture,
• After flowering, cut back stems about halfway for a new crop
• Narrow, opposite leaves; tubular flowers opening into five broad lobes.
• VIGOROUS—expanding via creeping rhizomes (underground stems)
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Salvia forskaohleiForsskal’s Salvia or Indigo
Woodland Sage
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Salvia forskaohlei
• Thrives in partial shade
• Native to Bulgaria and the Mediterranean
• Makes a large ground covering
• Loamy well-drained soil for best show
• Snails and slugs love this Salvia
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Salvia forskaohlei
• Salvia is the largest genus of plants in the mint family
• 700-900 species and many cultivars
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Verbena rigida, rough verbenaverbena family, Verbenaceae
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Verbena rigida, rough verbenaverbena family, Verbenaceae
• Rhizomatous ground cover; dies to ground in winter; easily propagated by division
• Opposite, lanceolate, serrate leaves, rough to the touch
• Blooms late spring to fall• flowers best with sun
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Rubus rolfei, creeping raspberry, rose family, Rosaceae
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Rubus rolfei, creeping raspberry, rose family, Rosaceae
• Evergreen trailing groundcover native to Asia• Leaves simple, alternate, thick & crinkly, shallowly lobed• Flowers like blackberry flowers but single, not in
branched clusters; fruits rare here