When to Overseed Ryegrass in Las Vegas (and Why)

Most Las Vegas lawns are warm-season Bermuda grass, which goes dormant and turns brown once temperatures drop in late fall. To keep a green lawn through winter, homeowners overseed with perennial ryegrass — a cool-season grass that thrives while Bermuda sleeps.

The timing that matters

The general window in the valley is mid-to-late fall, commonly around October, once nighttime lows consistently drop into the 60s. Seed too early and summer heat stresses the young ryegrass; too late and cold soil slows germination.

The basic steps

• Scalp (mow low) the Bermuda and remove clippings so seed reaches soil.
• Spread perennial ryegrass seed evenly at the recommended rate.
• Keep the seedbed consistently moist with short, frequent watering until germination.
• Ease back to normal watering and mowing once it's established.

Not sure it's worth the effort?

Overseeding is real work and uses water through winter. Some homeowners skip it and let the lawn go dormant; others are converting to artificial turf or desert landscaping to avoid the seasonal cycle entirely. If you want options, a local pro can quote either route.