Plant ID forum: Crabgrass (Digitaria); taking over my lawn

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Name: Ben Dunbar
St Louis, MO
bendunbar
Aug 25, 2015 7:36 PM CST
Patches of this weed starting showing up in my yard mid-July. It sprouts from its roots and weaves its way horizontally through the grass in all directions. It creates a tangled thick mat and it only grows bigger because the lawn mower doesn't cut that low. You can untangle and fluff it up above the grass line, pull it together like your tying a ponytail, then pull the weed with its roots out of the ground. This is spreading like wildfire and I can't seem to find any pictures of it online. Need help identifying it.
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Name: Jean
Prairieville, LA (Zone 9a)
Charter ATP Member Plant Identifier The WITWIT Badge Garden Sages Celebrating Gardening: 2015
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Moonhowl
Aug 25, 2015 9:45 PM CST
Welcome to ATP Ben. I am in no way certain, but it looks kind of like carpetgrass.

check out these links.

http://www.lsuagcenter.com/en/lawn_garden/home_gardening/law...

https://www.google.com/search?q=lawn+weed+with+stolons&espv=...
Name: Kent Pfeiffer
Southeast Nebraska (Zone 5b)
Charter ATP Member I was one of the first 300 contributors to the plant database! Plant Database Moderator Plant Identifier Region: Nebraska Forum moderator
Garden Sages Garden Ideas: Master Level Irises Celebrating Gardening: 2015
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KentPfeiffer
Aug 26, 2015 5:27 PM CST

Moderator

Isn't it just plain old Smooth Crabgrass (Digitaria ischaemum) ? It's extremely common in lawns around here. It's an annual that starts showing up around Independence Day and gets thicker and thicker until the frost kills it in the fall. Crabgrass ranks right up there with dandelions on the enemies list of "lawn people".
Name: Lin
Florida (Zone 9b)
Region: United States of America Morning Glories Region: Florida Houseplants Charter ATP Member I was one of the first 300 contributors to the plant database!
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plantladylin
Aug 26, 2015 6:51 PM CST
I agree with Kent, it looks like Crabgrass. We have four or five species of Crabgrass that grow here in Florida (D. ischaemum being one of them) and that sure looks like Crabgrass (Digitaria) to me.

http://www.missouribotanicalgarden.org/gardens-gardening/you...
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