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FakeNoose

(32,693 posts)
Mon Jun 26, 2023, 01:41 PM Jun 2023

Poison hemlock is in bloom in Western Pennsylvania and -- while pretty -- it's 'a very toxic plant'



Pittsburgh Post-Gazette link: https://www.post-gazette.com/news/health/2023/06/24/poison-hemlock-pa/stories/202306250077

Last month, Aspinwall officials got a report from a resident that they didn’t quite know what to do with: a patch of poison hemlock was growing in the borough’s Fireman’s Memorial Park, on a walking trail next to a playground.

“We were surprised and confused,” said Aspinwall borough manager Melissa O’Malley. “We’ve had that park for over 50 years and we’ve never had to deal with it.”

Poison hemlock is a highly toxic plant in the carrot family that can grow up to 12 feet tall. If any part of the plant is ingested, it can cause dizziness, paralysis and even death from respiratory failure. Touching the plant causes a rash in some people, and inhaling particles from the plant or having sap from the plant come in contact with cuts can also be dangerous.

- snip -

The plant is a biennial, meaning that it takes two years to complete its life cycle. In year one, poison hemlock grows as a small rosette, just leaves close to the ground in a circular pattern. In year two, a thick stem with distinctive purple blotches shoots up, and the plant flowers and drops seed. A single plant can produce more than 30,000 seeds, which can stay in the soil for years. The best time to control the plant with an herbicide is in its first year or early in the second year. By the time it shoots up in year two, controlling it chemically is ineffectual.






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If only the stink bugs and the spotted lanternflies would just go build their nests on the poison hemlock plants, all our problems would be solved.

12 replies = new reply since forum marked as read
Highlight: NoneDon't highlight anything 5 newestHighlight 5 most recent replies
Poison hemlock is in bloom in Western Pennsylvania and -- while pretty -- it's 'a very toxic plant' (Original Post) FakeNoose Jun 2023 OP
How's that project going? The one to mix hemlock leaves with... TreasonousBastard Jun 2023 #1
I think Shakespeare had it figured out FakeNoose Jun 2023 #2
Never eat anything that grows under a pine tree. gab13by13 Jun 2023 #3
Looks like a big Queen Annes Lace... druidity33 Jun 2023 #4
This is helpful, thanks! FakeNoose Jun 2023 #5
I thought florists used Queen Anne's lace bamagal62 Jun 2023 #10
THIS RAB910 Jun 2023 #6
I grew up with Queen Anne's Lace in New England. It's densely packed, and the hemlock is sparser. usonian Jun 2023 #7
Big help with these photos FakeNoose Jun 2023 #8
My plant ID app told me I had poison ivy and pokeweed, both toxic The Blue Flower Jun 2023 #9
Be sure to wear gloves, long sleeves and long pants FakeNoose Jun 2023 #11
Don't burn it. twodogsbarking Jun 2023 #12

TreasonousBastard

(43,049 posts)
1. How's that project going? The one to mix hemlock leaves with...
Mon Jun 26, 2023, 01:49 PM
Jun 2023

freshly washed spinach and Romaine to serve at the salad course at the next Republican dinner.

FakeNoose

(32,693 posts)
5. This is helpful, thanks!
Mon Jun 26, 2023, 02:17 PM
Jun 2023

Also it helps to know that Queen Anne's lace should be avoided as well. I don't think I ever knew that.

usonian

(9,844 posts)
7. I grew up with Queen Anne's Lace in New England. It's densely packed, and the hemlock is sparser.
Mon Jun 26, 2023, 04:12 PM
Jun 2023

Got it in the Sierras now.

I think these two tell the story nicely.





Nothing like the poison oak.

FakeNoose

(32,693 posts)
8. Big help with these photos
Mon Jun 26, 2023, 04:17 PM
Jun 2023

Thank you!

I'm pretty sure there's some hemlock growing on an empty city lot where I walk my dog every day. All this time I thought it was Queen Anne's Lace. And I got a strange rash a few months ago, now I'm wondering ....

The Blue Flower

(5,443 posts)
9. My plant ID app told me I had poison ivy and pokeweed, both toxic
Mon Jun 26, 2023, 04:42 PM
Jun 2023

I'm waiting for a heavy rain tonight so I can pull out the pokeweed tomorrow. The plant was getting huge and I have it in both front and back yards. The app is called 'Seek'. I'm in central Virginia.

FakeNoose

(32,693 posts)
11. Be sure to wear gloves, long sleeves and long pants
Mon Jun 26, 2023, 04:47 PM
Jun 2023

I've had many tussles with poison ivy over the years, but I don't know if I've ever dealt with pokeweed.

Good luck!

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