Wild garlic (Allium vineale) was introduced from Europe where it was used as a food flavoring. It is found in pastures, lawns, ornamental beds, and several cultivated crops. It grows west of the Cascades from Vancouver Island south into northwest Oregon.
Published March 1993. A more recent revision exists. Please look for up-to-date information in the OSU Extension Catalog: https://catalog.extension.oregonstate.edu
Western wildcucumber (Marah oreganus [T. & G.]
Howell), also known as Oldman- in-the-ground, Echinocystis
oregana Cogn., is a perennial with stems that
regrow each spring from a huge woody root.
Stems become long, and they climb with the aid of branched
tendrils. Leaves are alternate, lobed, and up to 6...
The action of a medicine may be less predictable in an older person and its intended action may be altered. Sometimes the effect is insignificant; other times it can be dramatic.
Tuber oatgrass
(Arrhenatherum elatius var
bulbosum) is native to Europe
and was introduced into this
country as a meadow grass. It
is found throughout the
Pacific Northwest but is
common west of the Cascades
and locally in central Washington.
Revised July 1980. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Four speedwell species are important weeds in the Pacific Northwest:
• Ivyleaf speedwell (Veronica hederaefolia L.)
• Persian, birdseye, or winter speedwell (Veronica persica Poir.)
• Creeping speedwell (Veronica filiformis Sm.)
• Purslane speedwell (Veronica peregrina L.)
Tall fescue (Festuca arundinacea Schreb.) is a perennial, cool-season bunchgrass that is grown for pasture, hay, and silage. Native to Europe and North Africa, it was introduced from Europe to North and South America.
St. Johnswort (Hypericum perforatum), also called Klamath weed and goatweed, was introduced from Europe and was found in California about 1900. It was a major pasture weed west of the Cascade mountains from Tacoma south to central California until the successful introduction of the chrysolina beetle, a leaf-eating insect.