Fescue Maintenance
Seasonal Guides for Your Fescue Maintenance
FALL

Mowing
Mow your fescue at a height of 2.5–3.5 inches in height during the fall.

Watering
Fescue requires about 1–1.25 inches of water every week including rainfall and supplemental irrigation. Don’t overwater.

Fertilization
For optimal results, feed your lawn monthly during the fall season by applying the Lawnifi’s Fall Fertilizer Box or apply Lawnifi Foundation once every three months.

Weed Control
Apply pre-emergent herbicides to control winter annual and perennial weeds like chickweed, henbit, Poa annua or purple deadnettle. Apply post-emergent herbicides only when weeds are present.

Insect Control
Check for and control any white grubs, fall armyworms or sod webworms. Treat with an insecticide if needed. If you use a granular variety, water the lawn immediately after application to help soil absorption.

Fungus Control
Apply fungicide if needed. If you have had a disease in your fescue in the past or have quite a bit of shade in the yard, apply a systemic fungicide to prevent future outbreaks. Consider mapping those areas because fungicide treatment can be expensive. If you use a granular variety, water the lawn immediately after application to help soil absorption.
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SPRING

Mowing
Don’t make the mistake of mowing your fescue lawn too short. Keep your lawn between 2.5–3.5 inches in height with a rotary mower that has a sharpened blade. Never remove more than ⅓ of the leaf blade.

Watering
Don’t overwater. Fescue needs about 1 inch of water a week from natural rainfall or irrigation. If you apply any granular fertilizer or control product, you will need to water it in. This is a sufficient amount of water for the week. Overwatering may promote disease outbreak. Conduct an irrigation audit to evaluate how much water is being delivered to different areas of your lawn.

Fertilization
For optimal results, feed your lawn during the spring season by applying Lawnifi Foundation, a granular fertilizer, or the Lawnifi Spring Fertilizer Box.

Weed Control
Apply a pre-emergent herbicide when soil temperatures reach 55 degrees Fahrenheit. This will prevent summer annual weeds like crabgrass, goosegrass and foxtail from plaguing your lawn and garden. Apply post-emergent herbicides in May as needed to control summer annual and perennial broadleaf weeds like white clover, knotweed, spurge and lespedeza. Products containing multiple broadleaf active ingredients are more effective in controlling broadleaf weeds.

Insect Control
Apply a broad-spectrum insecticide to prevent spring insects from appearing or to control any current spring insects like white grubs. White grubs may be active at this time. If you see any white grubs, apply a systemic insecticide.

Fungus Control
Unlike warm season turfgrasses, there’s typically no real reason to make fungicide applications in the spring for fescue. If, however, you notice disease in your fescue, apply a systemic fungicide.
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SUMMER

Mowing
When mowing during the summer, fescue usually performs best at a height of 2.5–3.5 inches. Never remove more than 1/3 of the leaf blade at a time. If you remove more than that, you will stress the grass and it may go brown for a short time. Taller blades provide more shade for your root system to stay cool and retain moisture during the hot summer days. If you are returning from vacation, you may have to mow multiple times to get the grass back to the desired height. Wait about 3–5 days between each mowing.

Watering
Do not overwater the grass. Fescue only needs about one inch of water weekly. Water for longer periods of time, less frequently and in the early morning hours. Take rainfall into consideration.

Fertilization
For optimal results, feed your lawn monthly during the summer season by applying the Lawnifi Summer Box liquid fertilizer program.

Weed Control
It is not recommended that you apply an herbicide at this time because when temperatures exceed 85 degrees Fahrenheit, the herbicide will damage the grass. Common weeds to look out for include knotweed, spurge, lespedeza, crabgrass, goosegrass, dallisgrass, nutsedge and sandspur.

Insect Control
Check for and control white grubs in July and August. Treat with an insecticide if needed. If you use a granular variety, water the lawn immediately after application to help soil absorption. August is the best time to control grubs because they are small and feeding near the soil surface.

Fungus Control
Fescue is highly susceptible to brown patch disease, which appears as irregularly shaped patches of dead or dying turf. Do not apply nitrogen fertilizer when the disease is active, keep the mowing height above three inches and water between 2:00–8:00 a.m. Apply a fungicide like Heritage G during severe brown patch outbreaks. If you use a granular fungicide variety, water the lawn immediately after application to help soil absorption.