Yew Pigweed and its relative lamb's quarters can cause kidney failure. (We say this simply because we don’t want to put anyone’s livestock at risk.) Wild mustard can be palatable before it sets seed. Pokeweed: Pokeweed (Phytolacca americana) is a commonly found weed in horse pastures and around fence lines.It grows erect, resembling a tree, and can reach up to 10 feet in height. Sausage and mustard; Alcohol. One note: We’ve been told that the mustard’s too spicy for many animals, so they avoid eating it. Seeds of mustard family weeds can be toxic, so it’s best to graze or harvest early. Symptoms can include: frothing at the mouth; bloating; diarrhoea; and breathing problems. Pigweed can be very toxic if eaten in large quantities. Bottom line: Mighty Mustard is not suitable for grazing by horses, cattle or pigs. More well known as Wild Mustard, it is not a healthy plant for horses to be exposed to over a long period of time. Brassica species is Ceriman, also commonly called Wild Mustard. Euthanasia is recommended if the horse is too debilitated to eat. This weed seems to grow everywhere, from pastures to vegetable gardens, roadsides to barnyards. Weight loss is also common. But will it be ok to feed the horses this alfalfa, have not really seen it in the grass hay right next door. Growing in heavy clay soil during the summer months, it should be removed from pasture to stop a horse eating it in large amounts. What to do: There is no treatment, and any neural damage is permanent. It is still toxic if dried and baled into hay. The stem is often purple or red in color and can reach a diameter of 4 inches. This plant can be annual, perennial or biennial and grows alternate leaves, 4 petaled flowers are usually yellow (but can be white, blue or purple), seedpods are broad and flat. Horses are unlikely to eat this plant unless there is no other food available. We can conclude that if we eat yellow mustard, we will get many energies that can be used to do our activities and work. thanks suz: Moderator: DrO: Posted on Wednesday, May 23, 2007 - 10:43 pm: Susan, I lifted this off the Texas Cooperative Extension Service: Description Tansy mustard is an annual cool-season forb growing to 2 feet tall. ... Wild pot plants; Snotty Kleenex; ... "If we can eat it, most horses can eat it in relatively small amounts–less than one pound per day." Signs: Affected horses may appear to have tense or clenched facial muscles, and they are unable to bite or chew their food effectively. Humans aren’t the herbivores cattle are and we don’t tend to eat as much mustard, still some caution is advised. Many agricultural departments classify wild mustard as poisonous because if cattle eat too much of it they can get quite ill with stomach irritations — and they have more than one stomach to irritate. 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