Pennsylvania Smartgrass?

cagantpr

Active Member
I believe this weed in my clover plot is known as Pennsylvania Smartgrass. Does anyone have any experience with it? Will deer eat it? If not, how would I erradicate it? Thanks in advance.
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Native Hunter

Well-Known Member
At this point it is difficult to say for sure, but that looks like Creeping Smartweed rather than Pennsylvania Smartweed.

Really, it doesn't matter, because deer won't eat either one of them, and they are very similar.

They are the worst of food plot invaders. There is a herbicide people use called Raptor. I've not used it myself, but some folks on this forum have used it. Hopefully they will chime in with some more information. Good luck.
 

OkieKubota

Moderator
Staff member
It is very invasive. It is taking over in my large plot...will GLY kill it? If so I am burning the whole plot down next summer with it and starting over in the fall...
 

Native Hunter

Well-Known Member
Johnny, I have to hit it multiple times with gly to kill it. If it has been growing there very long you will have lots of seed too. It’s the most troublesome weed I deal with.
 

weekender21

Well-Known Member
Is the plant you're referring to the one with small clusters of pink seeds? We definitely have that one on our property too.
 

dogghr

Well-Known Member
Hates being smothered by tall grasses. Plots won't be pretty but sure have less crap like this. But then there won't be those pretty perfect plot pics to which we have become accustomed .
 

X-farmerdan

Well-Known Member
http://deerhunterforum.com/index.php?threads/spraying-clover-this-late.4244/

There's some info I shared in the thread at the end of the link above. I've been dealing with Pennsylvania Smartweed, aka, PITA, my whole life. It's a weed that thrives in moist soils, almost wetland like areas. It's all over the swamps next to my food plot fields. You can mow it, glyphosate it, beat it with a mallet....but it just keeps coming back. It's a annual and a prolific seed producer. Just this year I started using IMOX. It comes in many trade names. The active ingredient is imazamox. I'm sold!

It will smoke the smartweed. And it provides residual control meaning it remains active in the soil at levels high enough to control post application outbreaks. Some people like that, some don't because it limits what you can seed/overseed for a number of months
 

cagantpr

Active Member
http://deerhunterforum.com/index.php?threads/spraying-clover-this-late.4244/

There's some info I shared in the thread at the end of the link above. I've been dealing with Pennsylvania Smartweed, aka, PITA, my whole life. It's a weed that thrives in moist soils, almost wetland like areas. It's all over the swamps next to my food plot fields. You can mow it, glyphosate it, beat it with a mallet....but it just keeps coming back. It's a annual and a prolific seed producer. Just this year I started using IMOX. It comes in many trade names. The active ingredient is imazamox. I'm sold!

It will smoke the smartweed. And it provides residual control meaning it remains active in the soil at levels high enough to control post application outbreaks. Some people like that, some don't because it limits what you can seed/overseed for a number of months

IMOX sounds like the ticket - I am going to try it in spring for sure. Thanks.
As an annual, have you ever tried using a pre-emergent? I also have issues with Japanese Stiltgrass invasive. I had been considering tying a pre-emergent with that also.
 

X-farmerdan

Well-Known Member
Preemergents are a whole different animal. In clover? I don't know of any. Maybe we are thinking of two different "preemergents."

You want something to use in established clover to control weeds before they germinate? Or, are we talking about a herbicide to use at the time clover is planted?
 

Mennoniteman

Well-Known Member
IMOX sounds like the ticket - I am going to try it in spring for sure. Thanks.
As an annual, have you ever tried using a pre-emergent? I also have issues with Japanese Stiltgrass invasive. I had been considering tying a pre-emergent with that also.
Oust XP is the only thing that works good for Japanese Stiltgrass in the woods or along forest roads. It's a preemergent in granular form that can be spread dry or mixed with water. This keeps the seeds from germinating which is the only way to stop stiltgrass while not killing the trees. It's suggested application is early spring before any germination starts, apply on the dead grass from the year before.
 

Double L

Well-Known Member
Oust XP is the only thing that works good for Japanese Stiltgrass in the woods or along forest roads. It's a preemergent in granular form that can be spread dry or mixed with water. This keeps the seeds from germinating which is the only way to stop stiltgrass while not killing the trees. It's suggested application is early spring before any germination starts, apply on the dead grass from the year before.

We have been dealing with the stilt grass also. I think it laughs at the gly when we spray it. We have it on some of our roads and it has been working its way into some of our clover plots. Will the oust xp work in the clover too? Is spring pre emergent the only way to kill it? Is there any thing that can be done yet this year? Thanks.


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cagantpr

Active Member
We have been dealing with the stilt grass also. I think it laughs at the gly when we spray it. We have it on some of our roads and it has been working its way into some of our clover plots. Will the oust xp work in the clover too? Is spring pre emergent the only way to kill it? Is there any thing that can be done yet this year? Thanks.


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I kill stiltgrass with gly on my paths. So far, I haven't had huge problems with it in my clover pots.
I would think frequent clipping in fall would work if you can keep on top of it before it seeds out.
One problem I have with pre-emergents in my lawns for crabgrass has been that I need to apply it several springs in a row so that the old seeds from years before don't sprout.
 

Mennoniteman

Well-Known Member
We have been dealing with the stilt grass also. I think it laughs at the gly when we spray it. We have it on some of our roads and it has been working its way into some of our clover plots. Will the oust xp work in the clover too? Is spring pre emergent the only way to kill it? Is there any thing that can be done yet this year? Thanks.


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Glysophate just makes stilt grass mad, because of the huge seed bank in the soil, when you burn it down with gly the sunlight and extra available nutrients seem to make it come back stronger than ever. One application of OustXP seems to take care of it permanently. Sorry, I've never tried it on clover, ill experiment next spring. For me, I'd just let it run it's course this fall and nail it in early spring. It'll die on it's own after frost hits it a couple times.
 

Double L

Well-Known Member
Thanks Mennoniteman, Ill look and see if I can buy OustXP by the tanker load, Im waging war on it this coming spring.
 

Double L

Well-Known Member
Glysophate just makes stilt grass mad, because of the huge seed bank in the soil, when you burn it down with gly the sunlight and extra available nutrients seem to make it come back stronger than ever. One application of OustXP seems to take care of it permanently. Sorry, I've never tried it on clover, ill experiment next spring. For me, I'd just let it run it's course this fall and nail it in early spring. It'll die on it's own after frost hits it a couple times.
Looking at getting ready for spring and tackling the stilt grass. How soon should I be looking at spraying
 

Tap

Well-Known Member
Looking at getting ready for spring and tackling the stilt grass. How soon should I be looking at spraying
Spray now if you are using a post emergent herbicide. You will get the best coverage if you spray now. If you wait, there will be grass hiding among the competition and you won't get adequate contact.
I've never tried pre-emergent herbicides on stilt, so I can't comment from personal experience, but I would suspect leaf contact will be less of an issue????
 

Double L

Well-Known Member
Sprayed IMOX a week ago this past Saturday stilt grass is willtering nicely. Broadleaf may be starting to show some sign of dying. Will wait to mow the clover another week and have. Hopfully mowing the clover now will help keep weeds under control. clover is looking better than ever. sprayed Clethodem back last weekend of April which helped too. As long as it keeps raining I plan on mowing while clover is still growing good. New tractor and new mower I will not mind doing the mowing. LOL
 
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