Plant ID forum: Please ID this weed

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East Providence, RI, USA
Jul 5, 2019 9:25 AM CST
I'm so totally puzzled by the fact that no weed ID site that I've been to has this extremely common and pervasive weed. I've scrolled through every weed image in this database and it's simply not there either. It's basically taken over my entire lawn, and it seems the more I pull them up (and I do so carefully, gently, to get the root) the more they appear.


Thanks in advance! ~Shawn
Thumb of 2019-07-05/visitor/681959

Name: James
North Louisiana (Zone 8b)
Adeniums Cactus and Succulents Lover of wildlife (Raccoon badge) Growing under artificial light Ferns Garden Photography
Region: Louisiana Region: Gulf Coast Enjoys or suffers hot summers Critters Allowed Lover of wildlife (Black bear badge) Container Gardener
Jul 5, 2019 9:58 AM CST

Its Marestail or Horseweed .....

I have it too ... in some areas of the USA it has become immune to herbicide weed control sprays...and everywhere else it has become resistant ..

the best control I have found is pull up any before they produce seed

Name: Carol
Santa Ana, ca
Sunset zone 22, USDA zone 10 A.
Charter ATP Member Bookworm Hummingbirder Lover of wildlife (Black bear badge) Orchids Region: California
Plant Identifier
Jul 5, 2019 11:04 AM CST
I agree
Name: Suzanne/Sue
Sebastopol, CA (Zone 9a)
Sunset Zone 15
Plant Database Moderator Region: California Cottage Gardener Roses Clematis Garden Photography
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Jul 5, 2019 6:41 PM CST


Horseweed (Erigeron canadensis) I think is the one.
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[Last edited by Calif_Sue - Jul 5, 2019 6:42 PM (+)]
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East Providence, RI, USA
Jul 6, 2019 3:46 PM CST
At first I thought there was a mixup between plants, as there are (apparently) two stages to this rather odd little plant: one with floppy, pointed leaves, that from above, appear to be in a pinwheel shape; with fuzzy stalks ... and then when the plant matures (at whatever height*) there's a hard-stemmed flowery part with spores. I had seen the hard-stemmed flowery part on the very short plants that'd been mowed down, and had spent many hours trying to pull them all out before the flowers got all puffy and filled with those airborne spore/seeds. I thought I'd successfully done so, and had acquired a new, pervasive, and annoying weed, but in fact it's the same weed. This stuff is truly annoying and it's all over the friggin' place in Rhode Island. I'm wondering if I got a professional lawn service if they'd be able to eliminate this beast and give me a real grass lawn.

Anyway, thanks to you all for your responses. I do wish you might've directed me, or simply mentioned that the photos that I'd submitted were of the first stage of the plant and that there's another dreadful part that comes afterward.

I've also been wondering if I ought to take heart and simply harvest this weed, as it appears to have several documented health benefits, verified by such sites as WebMD.

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