I want to note that many herbicides that are labled safe for livestock 24 hours to even hours after treating may contain a somwhat fine print precaution about making deadly plants more palatable, and over time, livestock can build up toxicity of the herbacide itself. For the goods on that visit these sites: EPA publication , Penn State argricultural extention , and Merck Vet manual pet health--herbicide poisoning
So, for now, heres a few photos to start, with more to come in other posts. Below is Poison Hemlock, one of the deadliest, like water hemlock, it grows in moist areas and can become quite tall. Where I photographed this, there were stands at least 6ft tall and 2 to three feet thick, growing along a creek bed. Early growth looks like a lovely low growing fern-like plant So don't go transplanting it to your garden! All parts of the plant are most toxic during early spring and can cause immediate death. If baled in hay, it can lose some potency, but depending on volume baled and eaten can also cause poisoning, possibly fatal.
Poison Hemlock |
Another common one: Horse Nettle, one of the various nightshades. Below is an excerpt from Equus mag... how toxic is this weed?
"Horse nettle, like many plants in the nightshade family, contains solanine, a glycoalkaloid that irritates the oral and gastric mucosa and affects the autonomic nervous system, which controls various internal organs. The glycoalkaloids act on the digestive system to cause excessive salivation, colic and diarrhea or constipation. These signs may be followed by depression, weakness, depressed respiration, dilated pupils, collapse and death if horse nettle is eaten in large amounts. - See more at: http://equusmagazine.com/article/how-toxic-is-this-weed#sthash.vwvc6xHm.dpuf "
Horse Nettle |
Horse Nettle flower |