What Makes the Hogweed Poisonous?
The stems of the Hogweed are filled with sap, as are the coarse white hairs that can be found on most of the plant’s stems. In an article titled “Environmental Health-Giant Hogweed” from the Region of Peel, the sap has furanocoumarin, an organic chemical that can cause photosensitivity. Reaction to Skin with Contact from Hogweed The Ontario Ministry of Agriculture Food and Rural Affairs (OMAFRA) states that photosensitivity results when the sap from the Hogweed comes in contact with the skin. When the skin is then in sunlight, UV radiation causes burning and blistering that can lead to purple and black scarring. If the sap comes in contact with the eyes, it can cause temporary and in some severe cases, permanent blindness. Reactions usually occur within 48 hours, but can sometimes take several days. Photosensitivity can be temporary or last several months, or even several years. Read on Outdoor Flowers and Plants Poisonous to Children Poisonous Plants Found Around the Home Poisonous Pl
