dethatching

Fall Dethatching & Overseeding

Everyone wants that lush green and full lawn. For northern cool season grasses, the closest thing to a get rich quick lawn solution is to fall dethatch and overseed. It will create the biggest impact difference to your lawn and is fairly easy.

The Preparation:

To do the dethatching for most yards under 20,000 sq ft you can easily knock this out with a simple DIY electric dethatcher like the one SunJoe sells for typically between $130-180. We like it for its price (as cheap as renting a beast of one from Home Depot for a few hours), and for its effectiveness. Check out the thatch coming up in the quick video below. Removing all of that buildup will allow water and nutrients to better reach the soil to be more effective. This will also prep your soil for better seed to soil contact when overseeding.

Dethatcher Rake

Type of Grass :

When picking your grass type for the fall overseed you need to decide what is best for your lawn. We like the idea of introducing more Kentucky bluegrass (AKA – KBG) blends into the lawn for their ability to expand growth and fill in gaps in the lawn. You can READ MORE ABOUT GRASS TYPES HERE. One brand we enjoy using is from OutsidePride.com and comes at a fair price.

Lawn Renovation Steps & Video From This Old House:
1. Mow the lawn to a height of 1½ inch. Be sure to collect the grass clippings.
2. Run a de-thatcher across the entire lawn to remove dead plant matter. (WE LIKE THE SUNJOE!)
3. Use a leaf rake to collect and remove all the thatch pulled from the lawn. Some people use a leaf blower or run their lawn mower over after raking to pick up the extra piece in their bagger.
4. Run a gas-powered core aerator across the lawn. (WE ACTUALLY SKIP THIS STEP, UNLESS YOU HAVE REALLY COMPACT SOIL)
5. Rake up and remove the soil plugs extracted by the aerator. (IF YOU DID THIS)
6. Spread compost over the lawn and rake it down into the holes. Even if you did not core aerate compost or peat moss is a really nice introduction of organic matter to the soil.
7. Analyze the physical structure of the soil with a soil test kit; amend the soil as necessary. (LAWN SERV’S JOB!)
8. Use a broadcast spreader to over-seed the lawn with new grass seed. Adjust the spreader to dispense seven pounds of seed per 1,000 square feet area.
9. Use backside of leaf rake to lightly work the grass seed into the lawn.
10. Lightly water twice a day to keep the lawn damp, not soaking wet.