Member-only story
Photodermatitis is One of Four Types of Dermatitis Plants
Giant Hogweed is one that looks so lovely but beware especially in good weather.
The Giant Hogweed is a perennial plant and surprisingly part of the carrot family. This plant migrated from Europe to Canada and the United States. It is an invasive species.
The plant is federally listed as a noxious weed in many US states. Importing into the United States or moving it interstate without a permit from the Department of Agriculture is illegal.
The sap of the giant hogweed plant is phototoxic. Because of its phototoxicity and invasive nature, giant hogweed is often actively removed. In Southwestern BC, it is considered a hazardous plant that seriously threatens human health and our natural ecosystem.
It’s a huge plant, growing from five feet up to 16 feet, with three feet-wide, umbrella-like clusters of small white flowers. Leaves can be up to 15 feet wide, with rough and serrated edges, like a jagged saw. They are most likely found around areas with moist soil, including vacant lots, natural areas, riverbanks, roadways, and residential properties.
Toxic Dose
Giant hogweed sap contains furanocoumarins such as psoralen, methoxypsoralens, and bergapten which absorb specific…
