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Invasive Plants of Oklahoma |
Maps for confirmed county distributions in Oklahoma are by Oklahoma Biological Survey and should be considered works in progress.
Invasive Plants of Oklahoma
Maps for confirmed county distributions in Oklahoma are by Oklahoma Biological Survey and should be considered works in progress.
Russian Thistle is what most of us think of as tumbleweed. As the plant dries up it breaks free from the ground and is free to be blown across the country side spreading seeds. While there are other plants that use this strategy, the large piles of dried Russian thistles on fence lines warrants recognition as the epitome of tumbleweeds.
Photos: Mary Ellen (Mel) Harte, Bugwood.org & Forest & Kim Starr, United States Geological Survey, Bugwood.org
