[DC3]

I skipped the pre-emerg this past Jan because I needed to seed a few areas and didn't want any issues. Now I'm suffering... Neighbors crab grass is creeping in, as well as some random nutsedge.

I've spot treated but now the temps are pushing 90+ and I don't want to annoy the Bermuda too much more.

Any recommendations on a good pre-emerg (and/or selective grass killer) that is safe on yards 90 deg+?

 

[Ecks from Tex]

It may just be my ignorance, but I've never seen major temperature restrictions on pre-emergents such as prodiamine and dithiopyr, although I think extreme temperatures may reduce their length of effectiveness.

As far as selective herbicides, there's only one that you should even consider at this point and that's Celsius.

 

[DC3]

It's prob my lack of knowledge haha. I was worried that there might be the same restriction.

I've heard good things from Celsius, maybe it's time to buy.

 

[Colonel K0rn]

It's prob my lack of knowledge haha. I was worried that there might be the same restriction.

I've heard good things from Celsius, maybe it's time to buy.

The Bermuda Triangle read it and become familiar with its tenets, and your grass will thrive.

 

[DC3]

It's prob my lack of knowledge haha. I was worried that there might be the same restriction.

I've heard good things from Celsius, maybe it's time to buy.

The Bermuda Triangle read it and become familiar with its tenets, and your grass will thrive.

Wow. That's fantastic.

 

[kur1j]

@Ecks from Tex That is if you don't mind some discoloration. I applied sulfentrazone and expected it to burn. Oddly enough it had very little discoloration if my bermuda. The Nutsedge was toast though.

 

[Ecks from Tex]

@Ecks from Tex That is if you don't mind some discoloration. I applied sulfentrazone and expected it to burn. Oddly enough it had very little discoloration if my bermuda. The Nutsedge was toast though.

sulfentrazone Is not an active ingredient in Celsius. You applied something like Dismiss or Blindside, both of which have temperature restrictions.

I don't recommend applying Celsius over 90 degrees, but if herbicide must be applied it's the way to go. Your risk of discoloration is significantly reduced

 

[Greendoc]

@Ecks from Tex That is if you don't mind some discoloration. I applied sulfentrazone and expected it to burn. Oddly enough it had very little discoloration if my bermuda. The Nutsedge was toast though.

Low rate. No surfactant. It should not burn Bermuda too much. But I know what it does to Crabgrass, Goosegrass, and Nutsedge. The OP is fine to use Prodiamine now. I would spray it on with whatever postemergents needed and water the whole thing in the next day. The way I usually do it is to add the pre to fertilizer, wait a week, and go after the weeds then.

I have not had problems with Celsius in hot weather on Bermuda or Zoysia. Low to medium rate applied accurately, and observing the temperature restrictions on the type of surfactants to be used at a given temperature range. St Augustine can react badly to the Dicamba component in Celsius. I am glad Bayer formulated with Dicamba rather than 2,4-D or MCPP, because I know Centipede and St Augustine only tolerate those herbicides in cool weather.

 

[kur1j]

@Greendoc Yeah I learned quick at how hot Sulfentrazone last year. I did full rate last year to kill off my nutsedge. It torched the sedges and discolored my bermuda. It recovered quickly but since then I've only done bare minimum rate. I get kill of sedges in the same amount basically, I use less product and minimal to no burn in the bermuda. It's an all around winner.

 

[Greendoc]

No more than the equivalent of 4 oz per acre per application. For Purple Nutsedge, the first application burns off the tops. Second and third til you reach the annual maximum, go after the tubers. 4 oz works the same for me as 6 or 8. Grass tolerates 4 a lot better.

 

[DC3]

@Ecks from Tex That is if you don't mind some discoloration. I applied sulfentrazone and expected it to burn. Oddly enough it had very little discoloration if my bermuda. The Nutsedge was toast though.

Low rate. No surfactant. It should not burn Bermuda too much. But I know what it does to Crabgrass, Goosegrass, and Nutsedge. The OP is fine to use Prodiamine now. I would spray it on with whatever postemergents needed and water the whole thing in the next day. The way I usually do it is to add the pre to fertilizer, wait a week, and go after the weeds then.

I have not had problems with Celsius in hot weather on Bermuda or Zoysia. Low to medium rate applied accurately, and observing the temperature restrictions on the type of surfactants to be used at a given temperature range. St Augustine can react badly to the Dicamba component in Celsius. I am glad Bayer formulated with Dicamba rather than 2,4-D or MCPP, because I know Centipede and St Augustine only tolerate those herbicides in cool weather.

Are you saying to blanket the pre and post emergent? With as much small things moving in.. it might not be a horrible idea.. but getting the rate right is the trick.

 

[Ecks from Tex]

@Ecks from Tex That is if you don't mind some discoloration. I applied sulfentrazone and expected it to burn. Oddly enough it had very little discoloration if my bermuda. The Nutsedge was toast though.

Low rate. No surfactant. It should not burn Bermuda too much. But I know what it does to Crabgrass, Goosegrass, and Nutsedge. The OP is fine to use Prodiamine now. I would spray it on with whatever postemergents needed and water the whole thing in the next day. The way I usually do it is to add the pre to fertilizer, wait a week, and go after the weeds then.

I have not had problems with Celsius in hot weather on Bermuda or Zoysia. Low to medium rate applied accurately, and observing the temperature restrictions on the type of surfactants to be used at a given temperature range. St Augustine can react badly to the Dicamba component in Celsius. I am glad Bayer formulated with Dicamba rather than 2,4-D or MCPP, because I know Centipede and St Augustine only tolerate those herbicides in cool weather.

Are you saying to blanket the pre and post emergent? With as much small things moving in.. it might not be a horrible idea.. but getting the rate right is the trick.

The rate is easy if you measure your lawn and apply the lowest rate on the Celsius label.