Nutsedge Pre-Emergant

[mildewydog]

Anyone here have any luck with a Pre-m for nut sedge, I picked up a product called freehand, its got Dimethenamid-P, as well as Pendimethalin, supposed to stop sedge for the season. I figured it couldn't hurt. I figured i'd put it down may/june in just the areas where I went to war with the sedge last summer.

Wondering if anyone here has any advice for timing, and or use?

[mildewydog]

I never bothered to apply this last year, and was wondering what the board felt about it for cool season crasses.

looks like it stops everything, expecially at the higher application rates.

poa a, poa t, nut sedge, crabgrass, goose grass, nimble will, barnyard, etc...

[HoosierLawnGnome]

Put down your pre-emergent at typical times (forsythia blooming) and hit the existing sedge plants with a good post emergent like sedge hammer or triclopyr late spring / early summer when they pop up. Understand that sedge plants are different from broadleafs or grassy weeds. The plants you see probably already existed last year, you're just now seeing the new shoots from the bulbs in the ground.

Read up on your particular post emergent herbicide, but know that things like glyphosate / 24D etc won't offer much control if any.

It took me a few seasons to get rid of most of mine.

https://www.extension.purdue.edu/extmed ... y-19-w.pdf

Especially if you use something like sedge hammer, follow those instructions closely and be aware some don't last long once mixed.

[RockinMyLawn]

Put down your pre-emergent at typical times (forsythia blooming) and hit the existing sedge plants with a good post emergent like sedge hammer or triclopyr late spring / early summer when they pop up. Understand that sedge plants are different from broadleafs or grassy weeds. The plants you see probably already existed last year, you're just now seeing the new shoots from the bulbs in the ground.

Read up on your particular post emergent herbicide, but know that things like glyphosate / 24D etc won't offer much control if any.

It took me a few seasons to get rid of most of mine.

https://www.extension.purdue.edu/extmed ... y-19-w.pdf

Especially if you use something like sedge hammer, follow those instructions closely and be aware some don't last long once mixed.

Sedge Hammer is really a great product that does what it promises.
Literally a roundup for Sedge.
Definitely good advice along with mixing it carefully.
But I really see results within a week just because it's a taller plant & one can use it as a "smart" kill.

Only thing is that the area that you spray will turn yellow - but not the grass (lawn) - because the Sedge plant shrivels at that spot.

[mildewydog]

thanks rockin, I've used sedge hammer
thanks hoosier.

I guess my question was more about using Freehand as a pre-m in a norther cool season turf, as it controls all the typical broadleafs, more than normal grassy, as well as sedge.

anyone have any experience with it, results?

[McLovin]

Lots of bad info on this thread.

Triclopyr won't do a thing to yellow nutsedge. I wish it would.

Glyphosphate will control nutsedge. It will also kill your grass.

Tenacity is labeled for postemergence control for nutsedge. It works pretty well for me. That is my go to for postemergent nutsedge.

I saw an advertisement for "Roundup for Northern Lawns" last night (I think this is a bad idea to market a product name like Roundup and say it is fine for lawns). It does not have any glyphosphate but has 0.22% Sulfentrazone and is labeled to control nutsedge. Have not tried it, (it is relatively expensive on a cost per AI basis) and I do not plan to either.

http://www.roundup.com/smg/goprod/round ... cale=en_US

[andy10917]

+0.75 McLovin.

I know numerous people that have had the following experience with RoundUp on Sedge -- it "burns down" and disappears for a while but recurs much later the same season or next season. With Tenacity on sedges, my experience is that it is a slow "kill", but a much smaller plant can recur the following year.

[mildewydog]

but what about freehand 1.75g its a BASF product

[TimmyG]

but what about freehand 1.75g its a BASF product

mildewydog, there has been only one mention of Freehand Pre-M on this site before you, 4.5 years ago in this short thread:
Pre-emergent for next year to control nutsedge

As already alluded in this tread, people here generally do not go after nutsedge with a pre-M since most of it comes from pre-existing nutlets (tubers), not new seeds, and plants are easy enough to kill with Tenacity or sedge-specific herbicides like Sedgehammer.

P.S. In my experience, yellow nutsedge does not react to glyphosate.

[McLovin]

I use glyphosphate (+ NIS) to kill yellow nutsedge in our landscaping beds. Works well for me. YMMV.

edit: yellow and purple nutsedge are also listed as a controlled perennial weeds on the Roundup label.

http://www.domyownpestcontrol.com/msds/ ... 0Label.pdf

[andy10917]

but what about freehand 1.75g its a BASF product

Unless you want to depend on marketing literature or people that merely google/rinse/repeat, if you don't get a response in 2-3 days on this site, then there likely is little experience with the product by the members. In general, we discourage the repetition of what a member could google for themselves, and encourage personal experience.

[RockinMyLawn]

Lots of bad info on this thread.

Triclopyr won't do a thing to yellow nutsedge. I wish it would.

Glyphosphate will control nutsedge. It will also kill your grass.

Tenacity is labeled for postemergence control for nutsedge. It works pretty well for me. That is my go to for postemergent nutsedge.

I saw an advertisement for "Roundup for Northern Lawns" last night (I think this is a bad idea to market a product name like Roundup and say it is fine for lawns). It does not have any glyphosphate but has 0.22% Sulfentrazone and is labeled to control nutsedge. Have not tried it, (it is relatively expensive on a cost per AI basis) and I do not plan to either.

http://www.roundup.com/smg/goprod/round ... cale=en_US

I don't think any1 prior mentioned using roundup nor weed-b-gone type products to control yellow sedges.
What bad info are you talking about?