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Another weed question

Posted on 9/16/24 at 8:29 am
Posted by wheelr
Banned
Member since Jul 2012
5800 posts
Posted on 9/16/24 at 8:29 am
What is this? It has blown up in my yard the past few weeks.

I'd like to get rid of it but not at significant expense or harm to my dog. Any advice? In Acadiana if location helps.

Posted by CrawDude
Baton Rouge
Member since Apr 2019
5603 posts
Posted on 9/16/24 at 8:59 am to
I don’t have any first hand experience with it but look up Florida Betony. It resembles this from the photo. Does it have square stems?

Short video on ID & article. It’s a cool season perennial but the short video says it can appear in northern FL in Sept-Oct. I hope it’s something else.

Florida Betony

Florida Betony Control

Florida Betony - Clemson University

Posted by wheelr
Banned
Member since Jul 2012
5800 posts
Posted on 9/16/24 at 11:18 am to
No square stems but if that isn't it, it is damn close.

I have had those little purple flowers in the yard earlier in the season. Some of the leaves have the serrations along the edge.

Posted by LegendInMyMind
Member since Apr 2019
66235 posts
Posted on 9/16/24 at 12:02 pm to
quote:

I have had those little purple flowers in the yard earlier in the season.

Were the flowers on a stem above the plant, or closer to the plant/ground. Single flowers or bunches?
Posted by Zappas Stache
Utility Muffin Research Kitchen
Member since Apr 2009
40767 posts
Posted on 9/16/24 at 12:23 pm to
Looks like horse herb to me. I actually grow it as a native groundcover and it will spread
Posted by ronk
Member since Jan 2015
6955 posts
Posted on 9/16/24 at 1:42 pm to
Three seeded mercury.
Posted by wheelr
Banned
Member since Jul 2012
5800 posts
Posted on 9/16/24 at 1:46 pm to
quote:

Were the flowers on a stem above the plant, or closer to the plant/ground. Single flowers or bunches?


Large single flower per stem. At the top.
Posted by wheelr
Banned
Member since Jul 2012
5800 posts
Posted on 9/16/24 at 1:48 pm to
quote:

Looks like horse herb to me. I actually grow it as a native groundcover and it will spread


I just looked at pictures. Then went and looked in the yard again. In some areas I'm seeing the little yellow flowers, just like the reference pics.

I think this is it. Looks like shite in random splotches around the yard. Not sure if I'm going to do something about it.
Posted by CrawDude
Baton Rouge
Member since Apr 2019
5603 posts
Posted on 9/17/24 at 10:44 am to
quote:

No square stems but if that isn't it, it is damn close.

That’s great - be thankful it’s not FL Betony.
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