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Fall lawn care
Posted on 5/4/20 at 9:06 am
Posted on 5/4/20 at 9:06 am
I neglected my S. Louisiana lawn last year and had a number of weeds grow along with large bunches of clovers. In early April I did weed and feed along with a slow release fertilizer and my grass is as green as ever. Most of the clovers have died off and fortunately I dont have any crabgrass, which is all over the neighborhood and the field behind my house.
I plan on fertilizing again in late June and have been researching what I should do in the Fall. It seems that I mainly need a preemergence herbicide to kill the crabgrass seeds. Can anyone tell me a good time to lay this along with any other tips for fall and winter maintenance?
I plan on fertilizing again in late June and have been researching what I should do in the Fall. It seems that I mainly need a preemergence herbicide to kill the crabgrass seeds. Can anyone tell me a good time to lay this along with any other tips for fall and winter maintenance?
4
Posted on 5/4/20 at 9:19 am to thewarmth
Prodiamine in the fall and again in late winter for pre emerge.
Posted on 5/4/20 at 9:30 am to thewarmth
Fall pre em=winter grassy weeds=poa
February pre em=summer grassy weeds=crabgrass and foxtail
Make sure it is crabgrass and not dallisgrass. Dallisgrass is a perennial and pre em's will not work on that.
If you have St Aug or centipede I like Simazine in the fall and barricade twice in the winter/early spring. I would also do a 0-0-62 fert in the fall as well.
February pre em=summer grassy weeds=crabgrass and foxtail
Make sure it is crabgrass and not dallisgrass. Dallisgrass is a perennial and pre em's will not work on that.
If you have St Aug or centipede I like Simazine in the fall and barricade twice in the winter/early spring. I would also do a 0-0-62 fert in the fall as well.
Posted on 5/4/20 at 10:00 am to ronk
Damn, it is dallisgrass. Fortunately I only had one and I pulled it. Anything specifically for that weed.
Also, thanks for the tips.
Also, thanks for the tips.
Posted on 5/4/20 at 3:22 pm to thewarmth
Speaking for myself I believe the fall emergent herbicide program is more important than the late spring pre-emergent herbicide program, but don’t skip either one.
For S LA, late September/early Oct for the fall application, with a follow up application in Nov/Dec to control annual winter weeds, and early/mid Feb for control of spring/summer weeds.
Crabgrass is controlled with the Feb application.
Prodiamine, Dimension, Specticle and Simazine (winter) are all very good pre-emergent herbicide options available to you.
For example, Prodiamine in late Sept/early Oct, followed by a Simazine application in Nov/Dec, then another Prodiamine or Dimension application in early/mid-Feb.
You have granular or liquid (spray) options for Prodiamine, for all practical purposes for residential lawns, a granular option only for Dimension, Simazine is liquid. Liquid/spray options are going to be cheaper per application, and every bit as effective as granular. For spray applications, depending on the size of your yard, you may want to look into a 3 or 4 gallon backpack sprayer.
Also beware that pre-emergent herbicides are not going to kill every possible weed that might appear in your lawn, perennial weeds like Virginia Buttonweed, Dichronda, Dollarweed, are common examples of weeds not controlled with pre-emergents and will require post-emergent control.
Last tip, always try to err on the side of applying the pre-emergent herbicides too early, rather than getting to busy with life and applying it too late. Once a weed seed germinates, a pre-emergent herbicide won’t kill the weed, and you’ll need to use post-emergent herbicides.
For S LA, late September/early Oct for the fall application, with a follow up application in Nov/Dec to control annual winter weeds, and early/mid Feb for control of spring/summer weeds.
Crabgrass is controlled with the Feb application.
Prodiamine, Dimension, Specticle and Simazine (winter) are all very good pre-emergent herbicide options available to you.
For example, Prodiamine in late Sept/early Oct, followed by a Simazine application in Nov/Dec, then another Prodiamine or Dimension application in early/mid-Feb.
You have granular or liquid (spray) options for Prodiamine, for all practical purposes for residential lawns, a granular option only for Dimension, Simazine is liquid. Liquid/spray options are going to be cheaper per application, and every bit as effective as granular. For spray applications, depending on the size of your yard, you may want to look into a 3 or 4 gallon backpack sprayer.
Also beware that pre-emergent herbicides are not going to kill every possible weed that might appear in your lawn, perennial weeds like Virginia Buttonweed, Dichronda, Dollarweed, are common examples of weeds not controlled with pre-emergents and will require post-emergent control.
Last tip, always try to err on the side of applying the pre-emergent herbicides too early, rather than getting to busy with life and applying it too late. Once a weed seed germinates, a pre-emergent herbicide won’t kill the weed, and you’ll need to use post-emergent herbicides.
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