X🔥︎ DO NOT BURN 🔥︎XAvoid all contact with smoke.

  • If contact with smoke, seek ⚕︎ medical attention with all due speed.
X⛽︎✂︎ DO NOT USE HEDGECLIPPERS ✂︎⛽︎X.  Neither petrol/​gasoline nor electric:

  • I met a guy whose petrol/​gasoline hedgeclippers went through poison ivy before he noticed—plant fragments hit his lungs, the poison entered his bloodstream, hitting all body organs horribly, and putting him under ⚕︎ medical care for months.
  • Perhaps a 😷 P100 HEPA respirator/​filter mask would have helped, but I suggest maximum PPE and ✂︎ hand tools, nice and slow!
X✋︎ ☠︎ DO NOT TOUCH ☠︎ ✋︎X. To avoid skin rash and irritation phytophotodermatitis PPD, due to contact with phototoxic furanocoumarins, leading to ¿permanent damage, disfigurement and blindness?, avoid contact with all parts of this plant [1] with your ✋︎ skin, 👕︎ clothing, 👟︎ shoes and 🐕︎ pets:

  • If contact with anything, seek ⚕︎ professional medical advice with all due speed.  This author has heard of chemical causing permanent disfigurement of skin if the victim fails to stay out of the sun for or 6 years due to its photo​toxic effect, causing phyto​photo​derma​titis PPD.  If contact with the eyes, I read it can cause blindness.  Seek someone with more knowledge than me.  Now.
  • Don't delay.  The toxins (furanocoumarins) are activated by UV light, and UV gets you outdoors, even in the shade.

Also called and punctuated (in various combinations) American cow-parsnip and common cowparsnip, and sometimes called Heracleum lanatum.

Although do not confuse with unrelated similar-named wild parsnip  Pastinaca sativa, and sister-species X✋︎ ☠︎ giant hogweed  Heracleum mantegazzianum ☠︎ ✋︎X which is also sometimes called wild parsnip.   Cowparsnip:  A common look-alike to giant hogweed.

This and the sister-species are part of hogweed/cow parsnip  genus Heracleum in 🥕︎ carrot/celery/parsley  family Apiaceae.

Native to 🇨🇦 Canada except Nunavut, and 🇺🇸 USA except for Hawai'i and the Gulf Coast.

Uses by native peoples
(Ethnobotany database)

Heracleum hosts caterpillars of 7 species
of butterflies and moths, in some areas.
  Bloom dates.  Adobe Acrobat Reader file (page 58)

Learn more about X✋︎ ☠︎ cow parsnip ☠︎ ✋︎X Heracleum maximum

🔍︎ 🔍︎ images Discover Life Encyclopedia of Life Michigan Flora Minnesota Wildflowers NRCS PLANTS db USFS Wikipedia