Keeping grass from clumping?


LawnSite Member
Hempstead, TX
Where I live the humidity is so bad most of the time that if I waited for all the moisture to evaporate off the grass it would be after noon before I would get started. I primarily mow st. augustine grass, a little bermuda, and some bahai. I've seen meg-mo claim that their blades prevent clumping, but are there other ways to do it?



LawnSite Bronze Member
I mow in similar conditions and haven't had much of a problem with any of my mowers, except in REALLY damp / moist conditions. However, my JD 757 has the 7-Iron deck and it is by far the best I've used. Hasn't left a clump yet and I've been running it for 2 years now. Also, the longest grass I'm talking about is only two weeks growth. Not sure about yours, but that could be a factor.

Are you running at high enough RPM's? Going too fast? Blades sharp? Just trying to throw some ideas yer way.


LawnSite Member
Yea Brandon we also have high humidity and same grasses and usually its not much of a problem but when it is we just go back w/ a blower and spread it out


LawnSite Bronze Member
Cut the grass and let it lay while you finish mowing the lawn. No matter how bad you want to go back over it, let it lay and dry while you finish cutting. Once you finish mowing the lawn completely, then go back over the clumps with the discharge chute up and spray that grass out.

Most everyone has the tendency to try to fix the clumps right away by just crushing more and more moisture out of the grass blades. If you let the sun dry it out for just 10 min, it will make a big difference in your clumping problem.

works for me.

Mow more often...


LawnSite Member
Hope Valley, RI
Brandon: There is a product called moweeze that you can spray on your under decks and blades that does help. The parts you spray need to be very clean and dry when you do it. Let them dry 24 hours before mowing and retreat occasionally.


LawnSite Fanatic
Flint, Michigan
This (directly above) is the fastest way to do it, without question.