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Old 04-18-2013, 08:23 AM
chris2879 chris2879 is offline
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Summer Crabgrass Control Booster

Up here in MA it seems the temps are changing, warranting a later application of crabgrass pre-emergent. I have noticed even using good products like dimension, they will sometimes break down come late July or August. I have seen that Lesco has a 0-0-7 Dimension, can that be applied in the late June/early July time frame to further extend the crabgrass pre-emergent coverage. To be honest, I just recently saw this product, and am not really sure what time of year it can be applied. Since it seems to be mostly Dithiopyr and Potassium, I would think it would not burn the lawn in the hot summer heat, is this true?
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Old 04-18-2013, 11:00 AM
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DA Quality Lawn & YS DA Quality Lawn & YS is offline
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chris you need to monitor your soil temps to judge when you get the pre down. Temps 55-60, extended over 3 or more days, will start to bring crab. For instance right now we are at a soil temp of around 37 degrees I believe. Still very cold, where are you at? Lets just say I am in NO rush to throw pre down on cold, wet soil. If we continue a slow warm up, there will be NO rush to get pre down, should have a good deal of May to do it. A more rapid warm up pushes things up just a bit.

As for the product you mentioned, I checked it out too, solid product, esp. since no N to create an early season flush of growth.
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Old 04-18-2013, 04:29 PM
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RigglePLC RigglePLC is offline
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Soil temperature here is 50 degrees F. April 19, 2013. Heavy rain in last 24 hours. Air temp is 62--highest temp of the season. Seasonal temps have been below average.
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Old 04-18-2013, 04:52 PM
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DA Quality Lawn & YS DA Quality Lawn & YS is offline
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I am wondering how your soil temp is 15 degrees above ours?
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Old 04-18-2013, 04:58 PM
bx24 bx24 is offline
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Quote:
Originally Posted by chris2879 View Post
Up here in MA it seems the temps are changing, warranting a later application of crabgrass pre-emergent. I have noticed even using good products like dimension, they will sometimes break down come late July or August. I have seen that Lesco has a 0-0-7 Dimension, can that be applied in the late June/early July time frame to further extend the crabgrass pre-emergent coverage. To be honest, I just recently saw this product, and am not really sure what time of year it can be applied. Since it seems to be mostly Dithiopyr and Potassium, I would think it would not burn the lawn in the hot summer heat, is this true?
I have done split apps for years. Use Pre-M when soil temps are 50F for 3 days as stated above (which was last week). Re-spray with Dim in 6 to 8 weeks. I sprayed on April 7.

You can spray in june /july when was your last apps and you do have a max app rate per year; if you care about that.
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Old 04-18-2013, 05:40 PM
Mark Oomkes Mark Oomkes is offline
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Quote:
Originally Posted by DA Quality Lawn & YS View Post
I am wondering how your soil temp is 15 degrees above ours?
Sandy?

Full southern exposure? Wait, we haven't had any sun for a long, long time.

I need to dig out my soil thermometer.
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