Safe horse treats?

One bite of a yew bush is enough to kill a horse within minutes. Avocados are not at all safe for horses. Nor are persimmons that are not totally ripe because they can and do cause bezoars in horses. Tomatoes, potatoes, peppers, onions, carrot tops, and rhubarb should not be fed to horses.

Yew is not a fruit or vegetable. I did not include all vegetation in that statement. It's kind of a duh that there are toxic plants out there. I did mention avocados which are arguable. The flesh should not be toxic but some believe too much of the toxin in the pit can leak in to the flesh. Personally we feed avocado to our animals being extra careful to cut around the pit. Persimmons are argued on many forums and most people aren't going to feed more than 1 or 2 unless they have a persimmon tree and personally I think if you are growing something on your own land in large amounts you should do your research about it. Then people would know that feeding unlimited unripe persimmons from their tree is bad. Tomatos are safe. Tomato plants are not. The plant is not the vegetable. Now we are talking about vegetation instead of vegetable again. Potatos are toxic at a certain level but that level varies by potato so while I never suggest potatos being fed to anything including chickens you probably aren't going to feed enough to kill a horse. People often feed them to smaller animals and rarely reach the toxic level. Technically they are just as toxic to humans and cooking does not destroy the toxin but we still eat tons of them. I mentioned onions but again you probably aren't going to feed enough to cause problems. It takes feeding onion or garlic over an extended period of time or in very large amounts to cause anemia. The fact you have to feed a high enough level long enough is how people get away with using it as a dewormer in dogs and other mammals. Personally I prefer to not to do this and aside from occasional bits of garlic bread or a little leftover stew with some onion I do not feed it to my animals. Everyone I know feeds carrot tops all the time. The warning about carrot tops is because of pesticides sprayed on some carrots so carrots from your own garden or other similar sources are perfectly fine and yet again even with commercial carrots you are unlikely to feed enough to cause problems unless you are cutting up enough carrots for a small army. Rhubarb is the only one I can't find any info on. Of course the leaves are toxic to everything but I don't know about the stalks. We had rhubarb growing up and fed the stalks to horses. No one is specifying the stalks when they talk about it being poisonous.​