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Kentucky Bluegrass #798437

Asked June 29, 2022, 8:38 AM EDT

Two part ? I have a Kentucky Bluegrass lawn, should I let it seed out in the spring or does it not germinate? Also when it gets hot outside ( like recently) should I let it grow longer to protect it? Thank you

Nicollet County Minnesota

Expert Response

It's best not to let it go to seed.  This could actually result in a thinner lawn rather than a thicker one. Most lawn grasses, including Kentucky Bluegrass, spread through roots and stems; this is what thickens the lawn.  When grass grows tall enough to produce seed, its energy goes into the seed and not into the roots.  The end result is most likely a thinner lawn.  Also, the process can take up to four months.  For more information on this, see https://www.canr.msu.edu/news/when_grass_produces_seedheads

Raise your mower about an inch in summer.  This does protect the grass.   For more information, see https://extension.umn.edu/lawncare/mowing-practices-healthy-lawns
Diane McGann Replied June 29, 2022, 8:18 PM EDT

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