Fertilizing Lawns in Spring & Summer
It is easy to get spring fever as the end of winter approaches. Many people want to begin gardening and lawn improvements in April. Even retailers encourage us to do so by stacking lawn fertilizer in front of grocery stores and garden centers. Spring newspaper and radio ads feature lawn care products and fertilizers. This sign of spring is so wide spread, many people assume April is the best time to fertilize lawns.
Most Colorado lawns are comprised of cool-season grasses such as Kentucky bluegrass, perennial ryegrass or turf-type tall fescue. These cool-season grasses benefit the most from fall applications of fertilizer, usually sometime in October or November.
Applying a high-nitrogen fertilizer in April may cause grass to grow too fast, before roots can grow to support the lawn. This makes a lawn less tolerant of summer heat.
In most cases, an application of fertilizer in April is not needed when lawns were fertilized the previous fall or clippings are returned to the lawn. If an April application appears to be necessary, apply the fertilizer at a reduced rate. This may be followed by an early June application, a late August application, and the most important application in October or November.Lawn Care
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Updated Tuesday, October 13, 2015