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Milorganite and Weed N Feed Experts
Posted on 6/14/21 at 1:02 pm
Posted on 6/14/21 at 1:02 pm
So I used liquid Weed N' Feed two weeks ago and I guess I over sprayed. Now my grass (St. Aug) is somewhat burnt. Not dead, just yellow and brown and I don' want to wait months for it to get lush again.
Can I put down Milorganite now to help bring it back or just leave it alone? Or any other product?
Thanks for any help or advice...
Can I put down Milorganite now to help bring it back or just leave it alone? Or any other product?
Thanks for any help or advice...
3
Posted on 6/14/21 at 1:06 pm to Skippy1013
What did you use?
Posted on 6/14/21 at 1:09 pm to Skippy1013
has it been dry where you are?
If it is "burnt" which is typically associated with excess Nitrogen and not enough water, the last thing you want to do is fertilize.
Watering might be your fix unless you are actually seeing fungus damage.
If it is "burnt" which is typically associated with excess Nitrogen and not enough water, the last thing you want to do is fertilize.
Watering might be your fix unless you are actually seeing fungus damage.
Posted on 6/14/21 at 1:10 pm to notsince98
New Orleans. We have had plenty of rain.
Posted on 6/14/21 at 2:14 pm to Skippy1013
quote:
What did you use?
This is important, and when did you apply the W&F?
Most weed n feed products contain either atrazine or trimec post emergent herbicides which will definitively damage your lawn grass in this heat, but a few W&F products contain pre-emergent herbicides like Dimension which would not. This is why many on this board with good knowledge of lawn herbicides do not advocate use of weed and feed products b/c the window in which they can be safely and effectively used is rather narrow.
That said, you already applied fertilizer, and likely a fairly high N fertilizer, when you applied the weed and feed product, so I’m not sure how milorganite would help. Adding additional fertilizer in my mind is not a solution, even though milorganite is a slow release product.
Personally, I think you you need to wait it out and let the lawn recover on its own - hopefully it will - I don’t think there is a silver bullet to rapidly correct this problem.
This post was edited on 6/14/21 at 5:04 pm
Posted on 6/14/21 at 2:19 pm to CrawDude
Vigoro 20-0-0
Posted on 6/14/21 at 2:22 pm to CrawDude
Posted on 6/14/21 at 2:55 pm to Skippy1013
quote:my guess is the nitrogen burnt the grass.
Vigoro 20-0-0
Posted on 6/14/21 at 2:55 pm to Skippy1013
quote:
Vigoro 20-0-0
Water.
No milo until recovery.
How big of an area did you spray?
This post was edited on 6/14/21 at 2:57 pm
Posted on 6/14/21 at 3:07 pm to Skippy1013
Do not apply any fert to your lawn. So you put down a 20% N fert. How heavy did you apply? 4lbs per thousand would be .8lbs of N. You would have to be putting down 8-10 per thousand to burn it. I'd be willing to be your lawn has either large patch or gray leaf spot. Post some pictures.
Posted on 6/15/21 at 7:22 am to Skippy1013
According to the label of that product LINK it is a Trimec type weed & feed, with the primary herbicide in the formulation being 2,4 D. The label says not to apply it at temperatures exceeding 85 F - reason being 2,4 D can damage desirable turf grass at those temperatures. The label also states when used as directed the nitrogen application rate is 0.06 to 0.1 lb of N per 1000 sq ft - which is a very low application rate of N, in fact about 1/10, of a normal recommended N application rate for St Aug, so I don’t think N in that product had anything to with the “burning” of the St Augustine even though urea is a fairly quick release N fertilizer.
I also agree with ronk that you could also have a lawn disease issue playing a factor here - with the high heat, rainfall and humidity, conditions are idea for lawn diseases issues, particularly in a stressed lawn caused application of 2,4 D herbicide in high heat. So you could very well have a couple issues you are dealing with. I would not add additional fertilizer until an assessment is made of whether or not you have a lawn disease issue.
Posting some photos, including close up, of the damaged area grass would help. Could very well be you require a lawn fungicide treatment.
Also, did you apply any fertlizer to the lawn early this year, or was this your first application?
I also agree with ronk that you could also have a lawn disease issue playing a factor here - with the high heat, rainfall and humidity, conditions are idea for lawn diseases issues, particularly in a stressed lawn caused application of 2,4 D herbicide in high heat. So you could very well have a couple issues you are dealing with. I would not add additional fertilizer until an assessment is made of whether or not you have a lawn disease issue.
Posting some photos, including close up, of the damaged area grass would help. Could very well be you require a lawn fungicide treatment.
Also, did you apply any fertlizer to the lawn early this year, or was this your first application?
This post was edited on 6/15/21 at 8:22 am
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