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Filtering by: Decade 2000-2009 Remove constraint Decade: 2000-2009 Resource Type Technical Report Remove constraint Resource Type: Technical Report Subject Noxious weeds -- Control -- Oregon Remove constraint Subject: Noxious weeds -- Control -- Oregon

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Butterfly bush, Buddleja davidii

Creator:

Oregon State University. Extension Service

Abstract:

Butterfly bush is difficult to control. If the infestation is only a few small plants, pulling and digging are effective. For larger plants, chemical control may be needed. If butterfly bushes are in riparian areas or near water, consult your local OSU Extension Service office, ODF Stewardship forester, or county...

Resource Type:

Technical Report
Knapweeds, Centaurea spp., Acroptilon repens

Creator:

Oregon State University. Extension Service

Abstract:

Knapweeds are a serious problem in Oregon because they vigorously invade disturbed or degraded sites and form dense populations that exclude native and desirable plant communities, causing economic and ecological losses. Their ability to spread rapidly by seeds and roots makes control very difficult. Seeds can remain viable for 5...

Resource Type:

Technical Report
Gorse, Ulex europaeus

Creator:

Oregon State University. Extension Service

Abstract:

Gorse is a spiny, evergreen shrub native to the Mediterranean region. It was introduced on the West Coast of the United States as an ornamental in the late 1800s. Gorse was first found in Oregon in Benton County in 1916. Gorse infestations are concentrated along the Oregon coast, particularly south...

Resource Type:

Technical Report
Yellow starthistle, Centaurea solstitalis

Creator:

Oregon State University. Extension Service

Abstract:

Yellow starthistle, a native of the Mediterranean region, arrived in this country in 1869 as a contaminant in alfalfa seed. It is a strong invader of disturbed areas, rangelands, and roadsides and thrives in areas of summer drought. A yellow starthistle invasion will reduce biodiversity by choking out native plants....

Resource Type:

Technical Report
Canada thistle, Cirsium arvense [2014]

Creator:

Oregon State University. Extension Service

Abstract:

Published September 2008. Reviewed August 2014. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog

Resource Type:

Technical Report
Tansy ragwort, Senecio jacobaea [2008]

Creator:

Oregon State University. Extension Service

Abstract:

Published September 2008. Reviewed August 2014. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog

Resource Type:

Technical Report
English ivy, Hedera helix

Creator:

Oregon State University. Extension Service

Abstract:

English ivy is a trailing or climbing vine in the ginseng family, native to Europe and brought to America by early colonists. It is commonly cultivated as a groundcover and is widespread in the Pacific Northwest, where it has invaded many wild and unmanaged areas. It is an aggressive invader...

Resource Type:

Technical Report
Brooms, Cytisus spp., Genista spp., Spartium spp.

Creator:

Oregon State University. Extension Service

Abstract:

Scotch, French, Spanish, and Portuguese brooms were introduced into the western United States from Europe and the Mediterranean region in the mid- 1800s to stabilize mine tailings and other erosion and for landscaping. They now grow from western British Columbia to California (Figures 4a–d, following pages). The flowers had medicinal...

Resource Type:

Technical Report
Knotweeds, Polygonum spp.

Creator:

Oregon State University. Extension Service

Abstract:

Japanese and giant knotweeds were introduced to North America in the late 1800s as ornamentals but soon escaped into the wild. They are particularly invasive along streams, roadsides, and waste areas. Large, spreading patches of knotweed can completely dominate and displace native species in open sunlight. Erosion can increase on...

Resource Type:

Technical Report
Slender false-brome, Brachypodium sylvaticum

Creator:

Oregon State University. Extension Service

Abstract:

Slender false-brome is a perennial grass species native to Europe, Asia, and North Africa. The species has exceptionally wide distribution, occupying forested and open areas at a variety of aspects and elevations. Populations are known in riparian forests as well as in upland hardwood and conifer forests under patchy and...

Resource Type:

Technical Report

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Creator

Oregon State University. Extension Service12
Bennett, Max, 1963 1

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Current results range from 2006 to 2008

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2000-2009[remove]12

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Oregon State University. Extension Service12

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Technical Report[remove]12

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In Copyright12

Subject

Noxious weeds -- Control -- Oregon[remove]12
Blackberries -- Control -- Oregon2
Brachypodium -- Control -- Oregon1
Buddleja davidii -- Control -- Oregon1
Canada thistle -- Control -- Oregon1
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