Crabgrass vs. Tall Fescue

All too often coarse tall fescue is incorrectly identified as crabgrass. Tall fescue is a thick bladed fast growing and uncontrollable perennial grass that usually grows in clumps in the middle of a lawn. Tall fescue is NOT controllable without killing the desirable grasses surrounding the tall fescue.

Crabgrass, however, is an annual grass that germinates during the months of June and July and is controllable using a post-emergent annual grass control. Crabgrass is light green in color and usually grows in clumps on the edges of the lawn or in thin areas. People are often misinformed and under the impression that crabgrass is only controllable with a pre-emergent weed control. Crabgrass can be killed without damaging your desirable grasses using a special application called Drive XLR8 and crabgrass will die within 3-10 days after the application.


Crabgrass vs. Fescue Quick Reference:

  • Crabgrass is an annual grass that is lime green or lighter colored and typically germinates in June and July.
  • Crabgrass can easily be controlled after it emerges using Drive XLR8.
  • Coarse tall fescue is a perennial grass that is darker colored grass that is in the lawn all year long.
  • Coarse tall fescue cannot be selectively controlled. The only way to kill coarse tall fescue is to kill it with a product like roundup and then reseed the damaged areas.

If you have crabgrass growing in your Boulder or Fort Collins area lawn, call Organo-Lawn today and schedule a Drive XLR8 application to kill the crabgrass quickly.


Click on an image below to enlarge the photo.

Crabgrass is an annual grass that germinates in June. It is easily controllable using Drive XLR8. It is best to treat this grass early before it spreads seeds.

Coarse Tall Fescue, pictured above, is uncontrollable with selective controls. Only a non-selective control like Roundup will kill tall fescue.

This is a closeup of a Coarse Tall Fescue grass blade.