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Started By
Message
Lawn dethatching
Posted on 3/9/23 at 8:55 pm
Posted on 3/9/23 at 8:55 pm
Is there a right time for this or simply while grass is in growth mode? Is it too early now?
Centipede
Also - laid Lesco 0-0-7 about 4 weeks ago
Centipede
Also - laid Lesco 0-0-7 about 4 weeks ago
This post was edited on 3/9/23 at 8:57 pm
3
Posted on 3/10/23 at 9:01 am to Bayou
LSU AgCenter states to de-hatch/aerate when grass is in active growth often beginning around May, and since you recently applied pre-emergent herbicide, and dethatching will disturb that protective barrier I’d consider waiting until at least May, perhaps June - just my opinion.
Posted on 3/10/23 at 9:05 am to CrawDude
You're the expert on this (I am definitely not!), but in my mind, it would be too hot in June. Don't you want to cut the grass really short to make the de-thatching easier? If so, you don't want to cut it really short in June, do you? Again, just trying to think of this logically, it would seem that March/April would make more sense as the grass is definitely growing. Your point about the pre-emergent is a legit point that I had not considered.
Posted on 3/10/23 at 9:23 am to Crusty
I’m just going by AgCenter extension personnel written recommendations in their literature, but there is usually flexibility in most recommendations - had Bayou not put the pre-emergent down recently I probably would have said late April. ronk is really the turf expert as he does this for a living, so if he jumps into the tread I’d go with whatever he suggest.
Posted on 3/10/23 at 10:03 am to Bayou
Bought an open box electric dethatcher on Amazon last year. Thing is a beast. Makes light work of dethatching
Posted on 3/10/23 at 6:45 pm to Civildawg
Crawdude - Thanks for the advice. I mentioned dropping the pre emerge just for the purpose of your response. 
Dethatch around Memorial Day will be in my plan.
I planned on laying fertilizer mid April or so. I take it I should hold off on that also until after dethatching?
Dethatch around Memorial Day will be in my plan.
I planned on laying fertilizer mid April or so. I take it I should hold off on that also until after dethatching?
Posted on 3/12/23 at 8:07 am to Civildawg
Civildawg, what brand did you get?
Posted on 3/12/23 at 11:44 am to Bayou
quote:
I planned on laying fertilizer mid April or so. I take it I should hold off on that also until after dethatching?
No I’d definitely fertilize the lawn prior to de-hatching. De-hatching is not going to affect the activity and function of the fertilizer releasing nutrients to the growing lawn turf as opposed to the pre-emergent herbicide where you would indeed disrupt the weed seed germination protective barrier.
Posted on 3/12/23 at 9:06 pm to Bayou
Don’t dethatch your centipede. You will kill it. Core aerate after full green up will help with thatch. Lightly rake areas with thatch with a plastic rake if necessary.
Posted on 3/13/23 at 7:37 am to tilco
quote:
Don’t dethatch your centipede.
I really don't know why? Explain to me
----> I googled it and see why now! Stolons travelling above ground as a cover. I can see that. I'm thinking some spot areas that are browner may be ok??? (not large patch)
This post was edited on 3/13/23 at 8:23 am
Posted on 3/13/23 at 7:48 am to tilco
quote:
Don’t dethatch your centipede.
Why do you think it will kill it? I have centipede and I dethatch every two years and have never killed any grass (knocking on wood as I plan on doing it again soon).
Posted on 3/13/23 at 8:01 pm to Crusty
quote:
googled it and see why now! Stolons travelling above ground as a cover. I can see that. I'm thinking some spot areas that are browner may be ok??? (not large patch)
Because of this. Centipede has pretty shitty roots also.
This post was edited on 3/13/23 at 8:01 pm
Posted on 3/13/23 at 8:59 pm to tilco
quote:
Because of this.
So, dethatching St. Augustine is detrimental also, right?
Posted on 3/14/23 at 7:57 am to Bayou
It isn't recommended but I've done it in an extreme case. Customer was growing 7 inch St Aug and mowing it down to 4 inches. The yard felt like you were walking on a kitchen sponge.
Posted on 3/14/23 at 8:19 am to ronk
So I am actually hurting my yard when I put in extra work? That's great to hear, I'll stop my dethatching. Does this mean that I never have to worry about thatch with Centipede?
Posted on 3/14/23 at 7:20 pm to Crusty
What are we going to do with our dethatchers now? 
Posted on 3/14/23 at 9:48 pm to Bayou
I was wondering the same thing. Find a neighbor that has Zoysia or Bermuda?
Posted on 3/15/23 at 8:24 am to Crusty
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