🌱 How to Plant Grass Seed

Step-by-step guide to planting grass seed for a thick, healthy lawn.

When to Plant

Timing is everything when planting grass seed.

Cool-season grasses: Plant in early fall (late August–September) or early spring (March–April). Fall is ideal — warm soil and cool air create perfect germination conditions.

Warm-season grasses: Plant in late spring through early summer (May–June). Soil temperatures should be consistently above 65°F.

Step 1: Choose the Right Seed

Select a grass seed blend suited to your zone and sun exposure:

Full sun: Kentucky Bluegrass (cool) or Bermudagrass (warm)
Shade: Fine Fescue (cool) or St. Augustine (warm)
High traffic: Perennial Ryegrass (cool) or Zoysia (warm)

Step 2: Prepare the Soil

Test your soil pH — lawn grasses prefer 6.0–7.0
Remove debris — rocks, sticks, and existing weeds
Loosen the top 2–3 inches with a rake or tiller
Level low spots and fill with topsoil if needed
Add starter fertilizer high in phosphorus

Step 3: Sow the Seed

Use a broadcast spreader for even coverage
Follow the bag rate — more seed is not better
Lightly rake to cover seeds with ¼ inch of soil
Roll with a lawn roller for good seed-to-soil contact

Step 4: Water Consistently

Keeping the seedbed moist is critical:

Water 2–3 times daily for the first 2 weeks
Keep the top 1 inch of soil consistently damp
After germination, reduce to once daily, deeper watering
Transition to normal watering once grass reaches 3 inches

Step 5: First Mow

Wait until the grass is about 3–4 inches tall before your first mow. Only cut the top third — never scalp new grass.

Pro Tips

Starter fertilizer with nutrients gives seedlings a strong start
Straw or erosion blanket helps on slopes
Avoid walking on new grass for at least 3–4 weeks
Overseed thin areas in following seasons to thicken the lawn