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How do I care for my Tall Fescue Lawn?

T.P. Riordan, Turfgrass Plant Breeder, Horticulture
Rock E. Gaussoin, Extension Turfgrass Specialist
G.L. Horst, Turfgrass Physiologist/Management, Horticulture

MOWING
March 20 to April 10
Clean lawn of debris (i.e. rocks, sticks, etc.) Mow lawn at 2 inches and remove clipping debris.
April 10 to June 15
Mow lawn at 2.5 to 3 inches (2.0-2.5 for dwarf type). Mowing frequency should be dictated by growth rate. Mow at least on a weekly basis when actively growing.
June 15 to August 30
Raise mower height to 3 to 3.5 inches (2.5-3.0 for dwarf type) and maintain mowing frequency.
September 1 to 
November 15
(or last mowing)
Gradually lower mowing height to 2.5 inches. Mow on a weekly basis.
Alternative 
Mowing Schedule
To maximize rooting and stress tolerance maintain height at 3.0 to 3.5 inches for the entire growing season.
FERTILIZING
April 20 to May 10
Fertilize with 1.0 lb. of actual nitrogen per 1,000 sq. ft. Slow release fertilizer carriers are preferred. Apply combination product with preemergence weed control.
August 20 to August 31
Fertilize with 1.0 lb. of actual nitrogen per 1,000 sq. ft. Slow release fertilizer carriers are preferred. This application is optional on forage types like K-31.
October 15 to 
November 15
Fertilize with 1.0 lb. of actual nitrogen per 1,000 sq. ft. Slow release fertilizers are preferred.
WATERING
April to November
Water to prevent wilting and drought. Tall fescue is drought tolerant and can be grown in most years without irrigation.
HERBICIDES
April 20 to May 10
Apply preemergence herbicide for crabgrass, goosegrass and foxtail control, if necessary.
May 1 to May 20
Control dandelion and other broadleaf weeds if they are a serious problem. Fall is preferred time for control.
September 20 to October 31
Apply perennial broadleaf weed control if necessary. This is the preferred time for controlling dandelions and clover.
INSECT CONTROL
June 15 to June 30
Insects are seldom a problem in tall fescue lawns. Sod webworm and white grubs are occasional problems. Check for sod webworm larvae and control if necessary.
August 1 to September 30
Check for white grubs and control if necessary (see NebGuide
G92-1085, White Grubs in Turf).
DISEASE CONTROL
April 1 to June 15
Diseases are seldom a problem. Leafspot susceptibility is often related to early spring fertilization (i.e. March and April) with quick release fertilizer carriers.
June 1 to August 15
Susceptibility to brown patch is often related to heavy shade or overfertilization with nitrogen.
August 15 to October 15
Leaf and stem rust may be a problem on susceptible cultivars.
THATCH REMOVAL
Note:
Thatch is rarely a problem on tall fescue lawns.
AERIFICATION
April 1 to April 30
and/or
September 5 to September 30
Tall fescues are very tolerant to wear, but are susceptible to compaction stress. Aerify lawns that are on clay soil or subject to heavy traffic to minimize compaction and improve rooting.
OVERSEEDING
April 15 to June 15
and/or
August 20 to September 20
Overseed tall fescue lawns that have been thinned by winter injury. Use a blend of improved turf-type tall fescue cultivars, and seed at 4 to 6 lbs./1,000 sq. ft. When seeding, use a starter-fertilizer applied at 1.0 lb. N/1,000 sq. ft. Spring overseeding can be accompanied with an application of sadiron to prevent crabgrass competition (see current Recommended Turf Cultivars NebFact).