The sap of the giant hogweed plant is phototoxic; when the contacted skin is exposed to sunlight or to ultraviolet rays, it can cause phytophotodermatitis (severe skin inflammations). Initially, the skin colours red and starts itching. Blisters form as it burns within 48 hours. They form black or purplish scars that can last several years. Hospitalisation may be necessary.[9] Although media reports have suggested that eye exposure to the sap can lead to temporary or permanent blindness, the risk of permanent blindness is not supported by existing research.[19]
https://en.wikipedia.org/wiki/Heracleum_mantegazzianum
Strike by night! They need the sun to photosynthesize their venom!
Wipe them out! We must destroy them.
Can it be weaponized? Lots of democrats/antifa to test it on.