Sullivans Is lawn care, month by month
| Month | Tasks |
|---|---|
| January | Dormant (brown is normal) — no nitrogen, light cleanup only |
| February | Apply crabgrass pre-emergent |
| March | Apply crabgrass pre-emergent · Seed, sod, or plug new grass |
| April | Seed, sod, or plug new grass · First feeding at full green-up · Aerate / dethatch |
| May | Aerate / dethatch |
| June | Peak growth — regular mowing, about 1″ of water a week |
| July | Peak growth — regular mowing, about 1″ of water a week |
| August | Peak growth — regular mowing, about 1″ of water a week |
| September | Peak growth — regular mowing, about 1″ of water a week |
| October | Last nitrogen of the year |
| November | Growth stops — final mow |
| December | Growth stops — final mow |
Reading the Sullivans Is lawn year
Sullivans Is's lawn year runs on warmth: the lawn wakes after the last frost around Mar 13, hits full stride in midsummer, and goes dormant with the first frost around Nov 30. 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 Sullivans Is
Frequently asked questions
When should I plant warm-season grass in Sullivans Is?
Seed, sod, or plug Bermuda, Zoysia, and other warm-season grasses in late spring — around Mar 27 – Apr 10 in Sullivans Is, 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 Sullivans Is?
Aim for Feb 20 – Mar 13 — the estimated stretch when Sullivans Is soil approaches the ~55°F germination threshold, anchored to the average last frost (Mar 13). 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 Sullivans Is?
Keep mowing as long as the grass grows — in Sullivans Is that's typically until Nov 16 – Dec 7, around the average first fall frost (Nov 30). Warm-season lawns then go brown-dormant for winter, which is normal.
What grass grows best in Sullivans Is?
South Carolina is warm-season country: Bermuda, Zoysia, St. Augustine, centipede, bahia, buffalo. See the grass guides linked below for identification and care.