It was brought here over 100 years ago as an ornamental.I think its been around for a few years
(foreign weeds taking jobs away from American weeds...)
Looks like a pretty nasty invasive species - the Giant Hogweed. In New York state, but we all know how these things can spread... The sap seems to be particularly dangerous - do not handle these things! Have any of the New York members on here come across this one...www.survivalistboards.com
previous thread on topic.
Green brier is hard, but it has survival value. The upper is somewhat edible and goats love it. It develops large tubers that make it hard to eradicate, but i am told the tubers are edible also.Thank God that stuff doesn't grow around here. I'd have to break out the flame thrower.
Seen pictures of what it does to the skin, and that is some seriously nasty stuff. It makes poison ivy and fig tree sap look like nothing. And the effects can last for years? Years???
Fire ants and red wasps are my main nemises, but those can be kept under control with judicious use of pesticides. But giant hogweed would be terrible.
A question---- would repeated mowings at short intervals kill it out after a while?
I've noticed that invasive woody and semi-woody plants here will die out after I mow them several times. I mow them as short as I can, and then as soon as I notice new growth, within a week or two, I mow them again as short as I can. I may have to do this several times over a spring/summer but eventually they are deprived of top growth/photosynthesis to the point they die out.
I've done this with elderberry, yaupon, green brier (the hardest to eradicate) honeysuckle, wisteria, crepe myrtle, and probably some others I can't remember.
Would that work with hogweed? Just keep mowing it down to the ground as soon as an inch or two of new growth is seen?