wrote:

Fall has arrived which means the lawn mowing season is coming to
an end. What is better for a lawn - to mow one last time and leave
the grass short through the winter or not to mow and leave
longer blades for the grass to get started with next spring??

Recommended mowing heights for the four species of turfgrasses are 2.5-3
inches for Kentucky bluegrass, perennial ryegrass and fine fescue, and
2.5-4 inches for tall fescue. In areas with prolonged periods of snow
cover where snow mold is a problem, the last mowing of the season should
be 20-30% lower than normal to discourage fungal diseases in winter.

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Cheers, Steve Henning in Reading, PA USA http://home.earthlink.net/~rhodyman