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Hi guys I have this NEW customer that is trying to sell his house...

Lots of clover and quite a bit of crabgrass. He swears he will be able to put the water too it if I can get rid of the weeds. We have been having very high temps here lately upper 80's lower 90's. I told him if we get some time in the 70's I would try to spray broad and some long leaf killer but I can't promise anything with the strange year we have been having.

I guess my question for you guys is what temp would you even try to do this?


Mid Michigan the lawn is creeping red fescue, perennial rye and Ky Blue.
I told him it would be better to wait till the fall but you know how people are!!!

Thanks,

Mike
 

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Not sure how cool your weather can get in Michigan in the summer but I would say it is to late. You run a good change of killing the grass. READ the labels for whatever product you use. Grass dies than he will hold you libel. A customer can promise he will water the yard but how much or will he really do it.

Are you licensed to do fertilizer/pesticide? If not then your insurance will not cover the cost of replacing the grass if it dies since you were applying chemicals illegally without a license.
 

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Mike, great question. We use Speedzone for broadleafs. It says to use it under 80 degrees. Works best when weeds are growing and not in drought stress. I was told by a rep if we sprayed over 80 degrees we should use Surge. Same stuff but a Ester formulation I believe rater than a Amine formulation. My question is this, If its 65 degrees and I know its going to hit 90 that day, can we spray the amine in the morning when its still cool knowing that in 3 hours it will be well above 80? And if you do spray an amine when its over 80, what happens? Grass dies? Does not work? And before any of you guys ask, yes to the license and no it was not in any of my formal training, yet. PR
 

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PR Fect said:
My question is this, If its 65 degrees and I know its going to hit 90 that day, can we spray the amine in the morning when its still cool knowing that in 3 hours it will be well above 80? And if you do spray an amine when its over 80, what happens? Grass dies? Does not work?PR
This was my question also. AND, if you can spray early in the day (or even in the evening), how much time must it stay below 80? to ensure good knockdown?
 

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I spray when its in the mid eighties all the time. If I get a new customer in the middle of the summer, I will apply a weed/feed right away. I explain that a fall application will also be needed. Control may not be 100% but it will most likely be at least 70-80%. If temps are approaching 90 I will back off. The customer does not want to wait until fall.
 

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As long as said herbicide dries on the foliage before the temperature reaches X degrees, everything will be fine.

Even in the Summer you can normally spray herbicides early in the morning. BUT, I still use a conservative rate on the herbicide. This is not a time to go heavy.

Ester formulations will become very volatile in the heat, Amine is what you need now. Most of your Three-Way types can be sprayed up to 85, Surge can go to 90.

But if your customer has crabgrass and clover, Drive would be a great choice. Only one chemical needed.
 

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TurfUnlimited said:
As long as said herbicide dries on the foliage before the temperature reaches X degrees, everything will be fine.

Even in the Summer you can normally spray herbicides early in the morning. BUT, I still use a conservative rate on the herbicide. This is not a time to go heavy.

Ester formulations will become very volatile in the heat, Amine is what you need now. Most of your Three-Way types can be sprayed up to 85, Surge can go to 90.

So its a volition thing when its hot. I would think you get a lot of drift and miss your target, then giving poor control. So it really does not harm turf when its hot? You just can not get the control of the product?]
 

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I agree to stay away from using the ester formulations during the summer, especially if you are spraying turf around lots of ornamentals. The stuff will vaporize and kill the landscape plants. High temps, low humidity, and a light breeze will be all that it would take. Use the amine formulations; I like momentum fx this time of year. Sprayed the other day and mixed some 12-0-0 + chelated iron (had extra) and sticker with it. Temp was 85, high humidity, they were curled over in 24 hours.
 

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You can safley spray well in to the low 90's with little or no burn, but you have to be aware of the moisutre of the soil and the turf, use little or no sticker, and don't spray right in the heat of the day, but we try to wrap up each day by 1:00 and then you can still go to the backback safley.

And chemical does make a difference.

Mike, great question. We use Speedzone for broadleafs. It says to use it under 80 degrees. Works best when weeds are growing and not in drought stress. I was told by a rep if we sprayed over 80 degrees we should use Surge. Same stuff but a Ester formulation I believe rater than a Amine formulation. My question is this, If its 65 degrees and I know its going to hit 90 that day, can we spray the amine in the morning when its still cool knowing that in 3 hours it will be well above 80? And if you do spray an amine when its over 80, what happens? Grass dies? Does not work? And before any of you guys ask, yes to the license and no it was not in any of my formal training, yet. PR
Ummm, actually the LABEL says 90, and I have used it to that limit, but much over 85 it gets dicey, but it can be done. And Esters are for cool weahter, amines are for the hot weather. Just got it a little backwards.

At least, that's how we do it!.

EG
 
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