This cool-season, perennial, bunch-type grass is very durable. It is commonly used on athletic fields because it holds up well under hard wear. Tall fescue makes an attractive turf when grown by itself. When it is seeded with or invades bluegrass, bermudagrass, or ryegrass lawns, however, it is considered a weed. It becomes very clumpy and makes an uneven turf. The medium-dark green blades, 1/2 inch wide, are ribbed on the top surface and smooth on the bottom. In the spring and fall, the lower parts of the stems turn reddish purple. The blades tend to shred when mowed.
Omit a regular mowing before treating to allow for enough leaf tissue to absorb the chemical. One week after spraying, mow the tall fescue and reseed the area.