Turf Talk
Our Turf Talk blog gives you the professional advice you need to care for your lawn.

I would like to top dress my lawn. How much should I put on my lawn and when is the best time to be doing this?

The best time to top dress your lawn is in the spring. No matter how much top dressing you apply, you will be smothering grass plants that need oxygen and sunlight to survive. In the spring the lawn grows vigorously and is easily able to punch through the top dressing. Many homeowners also seed when they top dress the lawn. Spring is an advantageous time to do so since conditions are usually cool and moist. Under any circumstances, the rule for top dressing the lawn should be; lots of thin layers rather than one or two thick layers. How thick you go depends on how long your lawn is. As a general rule, you can apply top dressing to a thickness that is equivalent to one third the height of the lawn. If your lawn is three inches tall, spread top dressing at a thickness of one inch. If you are trying to raise your lawn significantly, keep in mind that once the top dressing settles and compacts, it will only raise your lawn by ten to twenty percent of the thickness you laid down. Only apply another layer of top dressing once the lawn has completely filled in through the first layer. If you are looking to raise your lawn by several inches, it will be necessary to resod or seed.

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