Tall fescue is a wide-bladed clump grass commonly used in lawns for sports fields because of its tolerance to wear. In a home lawn, many people do not like the tall fescues because: 1. they are lighter green in colour; 2. they have wider grass blades; 3. they grow in clumps and stand out from the Kentucky bluegrass. This textural difference of fescue from bluegrass and the interruption in uniformity makes tall fescue a weed in some lawns.
Tall fescues have been the subject of much improvement and breeding. The resulting turf types make a good lawn if they comprise 100 percent of the lawn. However, when tall fescues are in a bluegrass lawn, you may note that the clumps are tougher and the lawn mower has difficulty cutting them.
Control of Tall Fescue.
First, make sure you do not use a grass seed mixture that contains tall fescues. Tall fescues are sometimes found in less expensive mixtures for cottages and other types of lawns.
You can dig out the clumps, but ensure that all tall fescue roots are removed. Then re-seed or re-sod after removal. You can spray clumps with a non selective herbicide that contains glyphosate. Remember, though, that this will harm any grass that it is sprayed on.
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