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"Poisonous" does not mean deadly. Some manifestations of toxicity are subtle. The dose, as always, determines if a plant is safe source of nutrients or a toxic hazard.

Frequently (and not so frequently) Asked Questions

Simple keyword search (one or two words only)


BRIEF: What could have caused these blisters?

I would like a list of plants that are toxic to human skin such as poison ivy and oak. I am trying to find what plant gave me blisters on my leg. I do not have ivy or oak on my farm.


Stinging nettle? Poison sumac? Some people are sensitive to Virginia creeper, too. Also, you could have poison ivy and not know it. It is sneaky. A lot of people react to milkweed latex, too.