Are All Hogweed Dangerous?

Giant hogweed is an invasive species that can grow up to 14 feet tall, with beautiful blooms similar to those of Queen Anne's lace. Although nice to look at, the plant produces a toxic sap that can cause serious blisters, third-degree burns, and permanent blindness.

Is regular hogweed dangerous?

Although an impressive sight when fully grown, giant hogweed is invasive and potentially harmful. Chemicals in the sap can cause photodermatitis or photosensitivity, where the skin becomes very sensitive to sunlight and may suffer blistering, pigmentation and long-lasting scars.

Is all hogweed poisonous?

Common hogweed is not poisonous. It's also not to be confused with giant hogweed which has very high levels of furanocoumarins in the sap, and any contact with its sap will give you severe phototoxic burns. ... In all the years that I have taught foraging, I have never personally known anyone have a hogweed allergy.