UC Weed Science

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Water primrose along the American River.
Article

Biological control of invasive water primroses

October 15th, 2019
Exotic water primroses (Ludwigia spp.) are aggressive invaders in both aquatic and riparian ecosystems. The plants form dense mats over the water surface. These mats constrain navigation and interfere with recreational activities, irrigation, drainage, and agricultural production.
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Commandos from Cannon Air Force Base, N.M., clear tumbleweeds from a residential area in Clovis, N.M., 2014. U.S. Air Force/Senior Airman Ericka Engblom
Article

Giant tumbleweeds eat Victorville

October 6th, 2019
By Ben A Faber
A new species of gigantic tumbleweed once predicted to go extinct is not only here to stay -- it's likely to expand its territory. The species, Salsola ryanii, is significantly larger than either of its parent plants, which can grow up to 6 feet tall.
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Article

Summer Annual Weeds

September 30th, 2019
By Chris J McDonald
As the summer heat is finally nearing its end, and its officially fall on the calendar, there unfortunately is a new crop of weeds flowering right now. Some of our summer annuls have started to go to seed, others are just about ready, and others are already starting to senesce.
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