Fall fertilize for healthier lawn
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Last updated 10/15/2021 at 11:19am
WSU Grant-Adams Master Gardeners
Lawns need be fed regular applications of nitrogen, phosphorus and potassium and other nutrients to stay healthy. Choosing the right kind of fertilizer and applying it at the right time is important.
Here in Eastern Washington, there are optimal times to apply nutrients to help keep the lawn healthy and vigorous. Washington State University recommends considering fertilizer applications four times per year, May 1, June 15, Sept. 1, and Nov. 1-15 after the last mowing and before the ground freezes. When nitrogen is applied in the fall, avoid early spring applications until after April 1 unless nitrogen deficiency is apparent. Better root growth and vigor are encouraged and can avoid the flush of growth by annual bluegrasses. If one application is missed, do not double up on subsequent ra...
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