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Garden Weeds
Blindness
Cattle Health

What weed causes cattle to go blind?

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December 29, 2009 8:56PM

Euphorbia species are one type of weed that will do this. You may also be referring to jimson weed. This weed contains the active ingredient atropine, a muscarinic antagonist. In high doses, atropine will cause hot, dry skin, urine retention, dry mouth, increased heart rate, capillary dilation (and therefore flushing of the skin), and blurry vision in humans. If cattle did eat it, there is a good chance that they could lose their vision as well.