goutweed2010
2
The Problem The Problem The Problem The Problem ♦ Goutweed, also called Bishop’s Weed, (Aegopodium podagraria) spreads quickly by fast growing under- ground roots called rhizomes. Even a small piece of rhizome can re-sprout into a new plant, so take care to dispose of all plant material carefully and clean your clothing and shoes after going through or working with a patch of goutweed. ♦ Beautiful floodplain forests can easily become inun- dated with goutweed, impacting the populations of ostrich ferns, silver maple and other native plants. ♦ While the plant is illegal to sell, local plant sales still sell this plant and some gardeners think it makes a nice groundcover, inadvertently introducing a prob- lem into their flower beds and nearby natural areas. variegated- leaf variety goutweed Goutweed Goutweed Goutweed Goutweed invades Vermont’s fields, river edges and floodplain forests. It is easy to see easy to see easy to see easy to see in July in July in July in July when its white flowers are in bloom. small white flowers found on tall stalks rising above leaves © John Randall/The Nature Conservancy leaf with 3 sets of 3 leaflets GOUTWEED invasive fact sheet © IPANE © Leslie Mehrhoff/ IPANE © IPANE fast-growing rhizome with new plant stem The Nature Conservancy, Montpelier, Vermont 802-229-4425 x120 www.vtinvasives.org
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Transcript of goutweed2010
The ProblemThe ProblemThe ProblemThe Problem ♦ Goutweed, also called Bishop’s Weed, (Aegopodium
podagraria) spreads quickly by fast growing under-ground roots called rhizomes. Even a small piece of rhizome can re-sprout into a new plant, so take care to dispose of all plant material carefully and clean your clothing and shoes after going through or working with a patch of goutweed.
♦ Beautiful floodplain forests can easily become inun-dated with goutweed, impacting the populations of ostrich ferns, silver maple and other native plants.
♦ While the plant is illegal to sell, local plant sales still sell this plant and some gardeners think it makes a nice groundcover, inadvertently introducing a prob-lem into their flower beds and nearby natural areas.
variegated-leaf variety
goutweed
GoutweedGoutweedGoutweedGoutweed invades Vermont’s fields, river edges and floodplain
forests. It is easy to see easy to see easy to see easy to see in July in July in July in July when its white flowers are in bloom.
small white flowers found on tall stalks rising above leaves
© John Randall/The Nature Conservancy
leaf with 3 sets of 3 leaflets
GOUTWEED invasive
fact sheet
© IPANE
© Leslie Mehrhoff/ IPANE
© IPANE
fast-growing rhizome with new plant stem
The Nature Conservancy, Montpelier, Vermont 802-229-4425 x120 www.vtinvasives.org
Non-invasive Alternatives
For large infestations:For large infestations:For large infestations:For large infestations:
For new infestations:For new infestations:For new infestations:For new infestations:
Cover the patch with thick black plastic in the spring as soon as new growth appears. Lay plastic on an area larger than the patch and secure edges with sandbags, bricks or ground staples. Leave for a full year.
lowbush blueberry
Vaccinium
angustifolium
© P
hylli
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nd/L
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© Allan G. Austin/Canadian Museum of Nature
© The Nature Conservancy
goutweed
New infestations should be treated rap-idly before an extensive root system is es-tablished. Hand pull and grub-up all stems, roots, and rhizomes. Bag all plant material and allow to sit for one week be-fore disposing in a landfill. Re-check site each year.
GOUTWEED invasive
fact sheet
DO NOT COMPOST! DO NOT DISCARD IN WOODS OR FIELD! Plant fragments will re-sprout.
© Albert F.W. Vick, Jr./Lady Bird Johnson Wildflower Center
Goutweed may also be cut in late summer, after leaf-out, and then covered with plas-tic.
sweet fern
Comptonia peregrina
Christmas fern Polystichum acrostichoides
bearberry Arctostaphylos uva-ursi
© S
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The Nature Conservancy, Montpelier, Vermont 802-229-4425 x120 www.vtinvasives.org
