Full Thread: Invasive Species
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Old May 28th, 2014 #43
Nick Collings
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Giant Hogweed

Heracleum_mantegazzianum Heracleum_mantegazzianum

Quote:
Giant hogweed is a phototoxic plant. Its sap can cause phytophotodermatitis (severe skin inflammations) when the skin is exposed to sunlight or to ultraviolet rays. Initially, the skin colours red and starts itching. Then blisters form as it burns within 48 hours. They form black or purplish scars that can last several years. Hospitalisation may be necessary. Presence of minute amounts of sap in the eyes can lead to temporary or even permanent blindness.
The huge plant has hollow stalks that are attractive to children as play telescopes