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Fall Temperatures to Terminate Perennial Weed Growth
Carrington, 1994*

Weed Temperature (degrees F) Weed Temperature (degrees F)
Russian Knapweed 29 Field bindweed <17
Western Ragweed 29 Leafy spurge <17
Wild rose 29 Spotted knapweed <17
Prairie sage 29 Catnip <17
Goldenrod 22 Quackgrass <17
Stinging nettle 22 Dandelion <17
Floodman thistle 22 Wavyleaf thistle <17
Broadleaf plantain 22 Western yarrow <17
Yellow toadflax 17 Fringed sage <17
Western snowberry 17 Hoary cress <17
Perennial sowthistle <17 Canada thistle <17
Absinth wormwood <17    

Observations concluded November 10, 1994

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