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Old 04-16-2013, 05:29 PM
Mark Oomkes Mark Oomkes is online now
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Join Date: Dec 2000
Location: Grand Rapids, MI
Posts: 9,627
Originally Posted by Kiril View Post
Let's get a couple things straight.

1) It is called dethatching ..... not thatching

2) Even if you double passed with a vertimower you will still be able to rake stuff up, not to mention a double pass will tear the shiit out of any lawn

3) Thatch is a problem primarily in turfgrasses that spread via rhizomes and secondarily by stolons. Those that exhibit both stand the highest risk of producing significant thatch. One inch of thatch is the upper threshold where it needs to be addressed IMO.

4) Kentucky bluegrass is the only cool season grass that is likely to produce significant thatch, and therefore is the only one that really needs to be monitored. All this talk about thatch and cool season grasses without specifying the type of grass is idiotic.
Originally Posted by GreenUtah View Post
I am also puzzled by the talk of dethatching on cool season vertical grasses.

I liken it to combing your hair with a strip of duct tape.

If you are managing you irrigation, fertilization and mowing frequency properly and keeping the soil open to air circulation, via aeration, you shouldn't be dealing with thatch issues on vertical turfs. Cultural practices ARE the key and if they don't fall into your service offerings, then it's your duty to educate so that a system doesn't develop that's counterproductive to the services that you are doing.

Verticutting or any soil disruptor is going to break your pre layer, which is why most will aerate then follow with preemergents after a cutting or two can be made to redistribute core soil.

Leave the random ripping to the bermudas, zoysias, etc. and just aerate and low cut/bag those Bend yards to get them started off, then apply your pre. Visited the year before last, stayed in Sunriver, very nice area with a fantastic park downtown on the river. Loved the pedal bar circling the park, hated the winding streets that change names without changing
“Every step we take towards making the State the Caretaker of our lives,

by that much we move toward making the State our Master.”

~Dwight D. Eisenhower
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