Bermudagrass Lawn Care Guide — Georgia, Zone 8a

Nitrogen Budget

Aim for a seasonal nitrogen total between 1 and 5 pounds per thousand square feet. Going much beyond 6.5 pounds per thousand square feet starts to work against the grass rather than for it. Rather than applying that total at once, split it across the season's fertilizer windows — spring green-up, the two summer feedings, and the fall potassium application — so growth stays steady instead of surging and crashing.

Mowing Height by Season

Bermudagrass holds density best between ¾ inch and 1½ inches, and for spring, summer, and fall the target sits at about 1¼ inches. Never remove more than one third of the blade in a single mow — if the lawn has gotten tall, step the height down gradually over two or three cuts rather than scalping it in one pass.

In spring, a single low reset cut down to about ¾ inch can clear out the previous year's dormant thatch and speed green-up — but this is a one-time move, not a routine height. Bag the clippings from that cut, then return to the normal mowing height afterward.

Seasonal Schedule

The spring pre-emergent herbicide window runs March 1 to March 29, timed to soil temperature rising through 55°F, to get ahead of summer annual weeds before the lawn fills in. Spring green-up fertilizer follows once soil holds consistently above 65°F and the lawn shows 50% green-up, typically April 6 to May 4. Aeration fits into late spring, April 24 to June 5, once the lawn is actively growing with soil above 65°F and 75% or more green-up.

Early-summer seeding — for renovation or filling bare patches — falls May 4 to June 29, once soil is reliably between 65 and 70°F and nights stay warm. That timing gives the grass a full growing season to establish before dormancy; Bermudagrass should not be seeded in fall.

Summer fertilizer lands in two windows: May 25 to July 6, and again July 15 to August 26, sustaining density through the hottest stretch of the year. A wetting agent, if dry patches tend to be a problem, is best applied May 16 to July 15, before heat peaks, with reapplication through summer as needed.

If grub damage has shown up before, or grubs are a known issue in the area, the preventive window is May 11 to June 22 — timed ahead of egg hatch, since a preventive treatment doesn't help once damage is already visible. Most lawns never need this step; scouting for damage is the alternative.

Broadleaf weed control fits May 1 to June 18, once the lawn has fully greened up. Confirm the label lists Bermudagrass before applying, and avoid treating during drought stress or above roughly 90°F. As soil cools through 70°F in early fall (August 28 to October 3), a fall pre-emergent addresses winter annual weeds — annual bluegrass, henbit, chickweed — but it also blocks grass seed, including winter ryegrass overseed, so it's one or the other, not both.

Fall potassium, a high-potassium, low-nitrogen application, supports cold hardiness from September 21 to November 2. An annual soil test, collected July 27 to October 25 while the grass is still active, guides lime and nutrient decisions for the following season.

Watering

Aim for about ¾ inch of water a week, split into two deep soakings of about ½ inch each, done early in the morning so the lawn dries before night — wet turf left overnight invites disease. In sustained heat, that weekly target rises: about a quarter inch more when highs sit near the mid-80s, up to about a half inch more when three or more days approach 90°F, capped so the soil can absorb it without runoff.

Timing Conflicts to Plan Around

Some product categories interact with timing in ways worth checking before you act. If you've recently applied a broadleaf herbicide, wait about 6 weeks (42 days) before seeding, since the herbicide can interfere with new grass establishing. If a crabgrass pre-emergent has been applied, wait about 12 weeks (84 days) before seeding — pre-emergents work by blocking germination generally, and they don't distinguish between weed seed and the seed you're trying to grow. Always confirm timing and rates against the product label, since the label is the law.

None of this needs to happen all at once — Bermudagrass responds well to steady, well-timed attention across the season rather than any single treatment. When in doubt, let soil temperature and the label guide the decision.