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#1
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Crabgrass/Dimension question
I had a section of lawn that had crabgrass in years past.
This spring I used a product that contains Dimension (thanks ahlg). It worked great. I have some stray crabgrass plants that I deal with spot treatment. Will I ruin my Dimension for next year if I de-thatch this fall/next spring? That is, how long do I have to wait for the crabgrass seeds to finally die before I'm able to dethatch? |
#2
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Crabgrass/Dimension question
"JL" wrote:
I had a section of lawn that had crabgrass in years past. This spring I used a product that contains Dimension (thanks ahlg). It worked great. I have some stray crabgrass plants that I deal with spot treatment. Will I ruin my Dimension for next year if I de-thatch this fall/next spring? That is, how long do I have to wait for the crabgrass seeds to finally die before I'm able to dethatch? De-thatch this fall, then apply dimension again next spring. What's the question? |
#3
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Crabgrass/Dimension question
A google search didn't show the effective life of Dimension, but most
pre-emergents only work for 2-6 months. My guess is that whether you de-thatch this fall or not you'll need to re-apply dimension next spring. If you de-thatch in the Spring, you'll need to apply Dimension after de-thatching, which could be too late to prevent crabgrass germination. KB "JL" wrote in message ... I had a section of lawn that had crabgrass in years past. This spring I used a product that contains Dimension (thanks ahlg). It worked great. I have some stray crabgrass plants that I deal with spot treatment. Will I ruin my Dimension for next year if I de-thatch this fall/next spring? That is, how long do I have to wait for the crabgrass seeds to finally die before I'm able to dethatch? |
#4
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Crabgrass/Dimension question
On Aug 19, 10:04 am, "Kyle Boatright" wrote:
A google search didn't show the effective life of Dimension, but most pre-emergents only work for 2-6 months. My guess is that whether you de-thatch this fall or not you'll need to re-apply dimension next spring. If you de-thatch in the Spring, you'll need to apply Dimension after de-thatching, which could be too late to prevent crabgrass germination. Say what? Of course you can't put down pre-emergent in Fall and have it be effective in Spring for crabgrass. And de-thatching takes a day, not two months, so there is plenty of time to de-thatch in Spring, then put down pre-emergent. KB "JL" wrote in message ... I had a section of lawn that had crabgrass in years past. This spring I used a product that contains Dimension (thanks ahlg). It worked great. I have some stray crabgrass plants that I deal with spot treatment. Will I ruin my Dimension for next year if I de-thatch this fall/next spring? That is, how long do I have to wait for the crabgrass seeds to finally die before I'm able to dethatch?- Hide quoted text - - Show quoted text - |
#5
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Crabgrass/Dimension question
Quote: JL wrote on Thu, 16 August 2007 23:28
---------------------------------------------------- I had a section of lawn that had crabgrass in years past. This spring I used a product that contains Dimension (thanks ahlg). It worked great. I have some stray crabgrass plants that I deal with spot treatment. Will I ruin my Dimension for next year if I de-thatch this fall/next spring? That is, how long do I have to wait for the crabgrass seeds to finally die before I'm able to dethatch? ---------------------------------------------------- I'm just curious. Why would de-thatching interfere with the pre-emergent? -- Richard Thoms President - Top Service Pros, Inc. Connecting Homeowners and Local Service Professionals http://www.TopServicePros.com |
#6
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Crabgrass/Dimension question
Richard Thoms said:
Quote: JL wrote on Thu, 16 August 2007 23:28 ---------------------------------------------------- I had a section of lawn that had crabgrass in years past. This spring I used a product that contains Dimension (thanks ahlg). It worked great. I have some stray crabgrass plants that I deal with spot treatment. Will I ruin my Dimension for next year if I de-thatch this fall/next spring? That is, how long do I have to wait for the crabgrass seeds to finally die before I'm able to dethatch? ---------------------------------------------------- I'm just curious. Why would de-thatching interfere with the pre-emergent? The pre-emergent creates an invisible "barrier" that the weeds can't poke through. Any distruption of that barrier renders it useless. -- Eggs Two can live as cheaply as one, for half as long. |
#7
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Crabgrass/Dimension question
On Aug 21, 6:01 am, Eggs Zachtly wrote:
Richard Thoms said: Quote: JL wrote on Thu, 16 August 2007 23:28 ---------------------------------------------------- I had a section of lawn that had crabgrass in years past. This spring I used a product that contains Dimension (thanks ahlg). It worked great. I have some stray crabgrass plants that I deal with spot treatment. Will I ruin my Dimension for next year if I de-thatch this fall/next spring? That is, how long do I have to wait for the crabgrass seeds to finally die before I'm able to dethatch? ---------------------------------------------------- I'm just curious. Why would de-thatching interfere with the pre-emergent? The pre-emergent creates an invisible "barrier" that the weeds can't poke through. Any distruption of that barrier renders it useless. -- Eggs Two can live as cheaply as one, for half as long. Hmm. That's what about.com says as well. http://landscaping.about.com/od/weed...crab_grass.htm I'm a little surprised; I don't know about the commercial stuff, but I use corn gluten as a preemergent, which just inhibits root development, so I never thought about whether "puncturing" it would be a problem. |
#8
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Crabgrass/Dimension question
On Aug 21, 11:30 am, z wrote:
On Aug 21, 6:01 am, Eggs Zachtly wrote: Richard Thoms said: Quote: JL wrote on Thu, 16 August 2007 23:28 ---------------------------------------------------- I had a section of lawn that had crabgrass in years past. This spring I used a product that contains Dimension (thanks ahlg). It worked great. I have some stray crabgrass plants that I deal with spot treatment. Will I ruin my Dimension for next year if I de-thatch this fall/next spring? That is, how long do I have to wait for the crabgrass seeds to finally die before I'm able to dethatch? ---------------------------------------------------- I'm just curious. Why would de-thatching interfere with the pre-emergent? The pre-emergent creates an invisible "barrier" that the weeds can't poke through. Any distruption of that barrier renders it useless. -- Eggs Two can live as cheaply as one, for half as long. Hmm. That's what about.com says as well.http://landscaping.about.com/od/weed...crab_grass.htm I'm a little surprised; I don't know about the commercial stuff, but I use corn gluten as a preemergent, which just inhibits root development, so I never thought about whether "puncturing" it would be a problem.- Hide quoted text - - Show quoted text - It's the same concept. Neither one forms a physical barrier that crabgrass can't grow through. What they do is establish a top layer of soil that crabgrass can't germinate in. If you disturb that layer by dethatching, aerating, etc, you lose the protection. |
#9
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Crabgrass/Dimension question
Eggs Zachtly wrote:
[....] Hopefully, there's not enough time left in the growing season for those plants to reach maturity. =) and thus prohibiting those plants from being able to contribute their seed to an almost endless cycle of undesirables reproducing themselves.... |
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