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Old 03-06-2016, 05:51 PM
 
284 posts, read 391,152 times
Reputation: 125

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Hello,
We have an acre of Kentucky bluegrass on our property. I enjoy working in the yard but get really frustrated with the crabgrass that comes up in August. In recent years I have applied Scott's Crabgrass Preventer with Halts in the month of May but believe it might be too late to apply it at that time. This year I would like to apply lime first and then a week later apply the crabgrass preventer. I have an odd question to ask, should I mow the lawn on the lowest setting first and then apply both products. I will appreciate any information you can give me. Thank You!
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Old 03-07-2016, 04:41 AM
 
Location: Near the Coast SWCT
64,980 posts, read 47,284,481 times
Reputation: 10512
Quote:
Originally Posted by murph1982 View Post
Hello,
We have an acre of Kentucky bluegrass on our property. I enjoy working in the yard but get really frustrated with the crabgrass that comes up in August. In recent years I have applied Scott's Crabgrass Preventer with Halts in the month of May but believe it might be too late to apply it at that time. This year I would like to apply lime first and then a week later apply the crabgrass preventer. I have an odd question to ask, should I mow the lawn on the lowest setting first and then apply both products. I will appreciate any information you can give me. Thank You!
That's the problem and why it's still coming up after "years" of applying.


"EARLY" Spring is not May. Spring = March, April, May. June = Summer. So you are right, you're applying it too late.


Do it this month. Doesn't your bag have a label on it? And the Customer Service Number is free and they are there to answer questions like this and help you. Call them


Scotts Crabgrass Control FAQs
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Old 03-07-2016, 05:49 AM
 
Location: Zone 6B ~ Northern VA
1,444 posts, read 2,129,634 times
Reputation: 422
Where exactly are you located? The month of May definitely sounds rather late as this is a pre-emergent needs to be put down before the temperatures remain in the 70s. Generally a good indicator is if you have forsythia in your area you want to have the crabgrass preventer down just as it is starting to bloom.

You can apply both products the same day.

As for mowing the lawn on the lowest setting I am not sure your reasoning for doing this. If you want to lower it maybe one setting from your regular setting it should be fine but I would avoid cutting at such a low level.

Quote:
Originally Posted by murph1982 View Post
Hello,
We have an acre of Kentucky bluegrass on our property. I enjoy working in the yard but get really frustrated with the crabgrass that comes up in August. In recent years I have applied Scott's Crabgrass Preventer with Halts in the month of May but believe it might be too late to apply it at that time. This year I would like to apply lime first and then a week later apply the crabgrass preventer. I have an odd question to ask, should I mow the lawn on the lowest setting first and then apply both products. I will appreciate any information you can give me. Thank You!

Last edited by movin2Reston; 03-07-2016 at 07:13 AM..
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Old 03-07-2016, 05:53 AM
 
Location: NC
6,081 posts, read 7,023,877 times
Reputation: 12054
Does Forsythia grow in your area (the shrub with tons of early yellow flowers)? Apply the crabgrass preventer when the Forsythia starts blooming and you won't go wrong timing-wise. The same weather history that allows the forsythia to bloom is a signal to the crabgrass see that it is okay to germinate. That is exactly when the crabgrass preventer does it's preventing.

Be careful about liming as it might inactivate the crabgrass preventer (check with an expert). You can lime all year long as far as the grass is concerned, so maybe ick a different season.

As far as grass height when applying, you want to give the good grasses a healthy start, so don't mow too early unless you left it long over the winter. Then you might mow it back to 3 or 4 inches. The crabgass preventer does need to either hit the soil or be washed down into the soil by rain/mist/dew to do its thing.
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Old 03-07-2016, 06:14 PM
 
284 posts, read 391,152 times
Reputation: 125
Thank You everyone for all of your helpful suggestions, I really appreciate it!
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Old 03-08-2016, 11:05 AM
 
Location: Zone 6B ~ Northern VA
1,444 posts, read 2,129,634 times
Reputation: 422
Good luck! Keep us posted on your progress.

Quote:
Originally Posted by murph1982 View Post
Thank You everyone for all of your helpful suggestions, I really appreciate it!
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Old 03-08-2016, 11:58 AM
 
Location: Denver, Colorado U.S.A.
14,174 posts, read 22,492,358 times
Reputation: 10428
I put down the crabgrass preventer and fertilizer about 10 days ago, in Denver. The lawn is beginning to green up
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Old 03-13-2016, 09:49 AM
 
Location: North West Arkansas (zone 6b)
2,479 posts, read 1,706,852 times
Reputation: 3271
only put down lime if you did a soil PH test and the results came back with the recommendation to add lime.
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