Hamilton 3 S lawn care, month by month
| Month | Tasks |
|---|---|
| January | Dormant (brown is normal) — no nitrogen, light cleanup only |
| February | Dormant (brown is normal) — no nitrogen, light cleanup only |
| March | Apply crabgrass pre-emergent |
| April | Apply crabgrass pre-emergent · Seed, sod, or plug new grass |
| May | Seed, sod, or plug new grass · First feeding at full green-up · Aerate / dethatch |
| June | Aerate / dethatch |
| July | Peak growth — regular mowing, about 1″ of water a week |
| August | Peak growth — regular mowing, about 1″ of water a week |
| September | Last nitrogen of the year |
| October | Growth stops — final mow |
| November | Growth stops — final mow |
| December | Dormant (brown is normal) — no nitrogen, light cleanup only |
Reading the Hamilton 3 S lawn year
Hamilton 3 S's lawn year runs on warmth: the lawn wakes after the last frost around Apr 11, hits full stride in midsummer, and goes dormant with the first frost around Oct 27. The two dates to respect most are the pre-emergent deadline in late winter — southern soil warms early — and the last-nitrogen cutoff 6–8 weeks before frost, which protects the lawn from winter injury.
Grasses that fit Hamilton 3 S
Frequently asked questions
When should I plant warm-season grass in Hamilton 3 S?
Seed, sod, or plug Bermuda, Zoysia, and other warm-season grasses in late spring — around Apr 25 – May 9 in Hamilton 3 S, once soil has warmed well past the last frost. That gives new grass a full growing season to mature before its first winter dormancy.
When do I put down crabgrass preventer in Hamilton 3 S?
Aim for Mar 21 – Apr 11 — the estimated stretch when Hamilton 3 S soil approaches the ~55°F germination threshold, anchored to the average last frost (Apr 11). It's an estimate: a soil thermometer reading 50–55°F at 2″ depth for several days is the precise trigger, and pre-emergent must go down before crabgrass sprouts, not after.
When should I stop mowing in Hamilton 3 S?
Keep mowing as long as the grass grows — in Hamilton 3 S that's typically until Oct 13 – Nov 3, around the average first fall frost (Oct 27). Warm-season lawns then go brown-dormant for winter, which is normal.
What grass grows best in Hamilton 3 S?
Alabama is warm-season country: Bermuda, Zoysia, St. Augustine, centipede, bahia, buffalo. See the grass guides linked below for identification and care.