Does Fescue Grass Go Dormant In Summer?

Fescue grass is quite common in lawns across the US. Even though it is low-maintenance and self-repairs well, it is not as durable as some warm-season grasses. Many homeowners wonder: will fescue grass flourish, go dormant, or die during the summer? Let’s find out!

What Happens To Fescue Grass In The Summer?

Fescue is a cool-season grass that thrives in cooler climates. It grows rapidly in spring and fall but slows down significantly during hot summers. Dormancy is a natural rest period that allows the grass to survive heat and drought.

During dormancy, fescue turns brown, yellow, tan, or pale. Its blades become tougher, growth halts, and weeds may take over. However, with proper care—especially deep and frequent watering—it can survive summer and stay green in shaded areas.

Fescue is also vulnerable to the brown patch fungus, common in humid southern climates. This fungus creates irregular brown spots and can kill patches of grass, requiring reseeding in fall.

How Can You Tell If Fescue Grass Is Dormant?

• Grass blades turn pale, yellow, or brown.
• Growth slows or stops, reducing mowing needs.
• Cut edges dry out and harden, preventing new shoots.
• Watering doesn’t restore green color during extreme heat.

What Temperature Does Fescue Grass Stop Growing?

Fescue thrives in temperatures between 60°F and 80°F. It goes dormant when:

• Summer air temperatures exceed 90°F
• Winter air temperatures drop below 50°F

Root growth is strongest when soil temperatures are between 50°F and 65°F, making fall the best time for reseeding.

Tips For Keeping Fescue Grass Green In Summer

1. Fertilizing

Do not fertilize in summer. Instead, fertilize in fall and spring when fescue is actively growing. Two to three feedings per year keep lawns thick and healthy.

2. Reseeding

Fescue grows in clumps and doesn’t spread naturally. Overseed in fall or spring to maintain a thick lawn and repair dead patches.

3. Mowing

Keep mower blades high, especially in shaded lawns. Taller grass encourages deeper roots, helping fescue tolerate summer stress.

4. Watering

Deep, frequent irrigation is crucial. Once you start watering in summer, maintain it consistently or the grass may die if deprived suddenly.

On A Final Note,

Cool-season grasses like fescue thrive in spring and fall but struggle in summer heat. Tall Fescue is the most versatile, with deep roots, shade tolerance, and drought resistance, while Fine Fescue is more shade-tolerant but less heat-resistant.

With the right watering, mowing, and seasonal reseeding, you can maintain a lush, healthy fescue lawn year-round. For more challenging climates, professional lawn care services can help keep your yard looking its best.