St Petersburg lawn care, month by month
| Month | Tasks |
|---|---|
| January | Apply crabgrass pre-emergent · Seed, sod, or plug new grass · Growth stops — final mow |
| February | Seed, sod, or plug new grass · First feeding at full green-up · Aerate / dethatch |
| March | Aerate / dethatch |
| April | Dormant (brown is normal) — no nitrogen, light cleanup only |
| May | Dormant (brown is normal) — no nitrogen, light cleanup only |
| June | Dormant (brown is normal) — no nitrogen, light cleanup only |
| July | Dormant (brown is normal) — no nitrogen, light cleanup only |
| August | Dormant (brown is normal) — no nitrogen, light cleanup only |
| September | Dormant (brown is normal) — no nitrogen, light cleanup only |
| October | Dormant (brown is normal) — no nitrogen, light cleanup only |
| November | Last nitrogen of the year |
| December | Apply crabgrass pre-emergent · Last nitrogen of the year |
Reading the St Petersburg lawn year
St Petersburg's lawn year runs on warmth: the lawn wakes after the last frost around Jan 17, hits full stride in midsummer, and goes dormant with the first frost around Jan 15. 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 St Petersburg
Frequently asked questions
When should I plant warm-season grass in St Petersburg?
Seed, sod, or plug Bermuda, Zoysia, and other warm-season grasses in late spring — around Jan 31 – Feb 14 in St Petersburg, 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 St Petersburg?
Aim for Dec 27 – Jan 17 — the estimated stretch when St Petersburg soil approaches the ~55°F germination threshold, anchored to the average last frost (Jan 17). 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 St Petersburg?
Keep mowing as long as the grass grows — in St Petersburg that's typically until Jan 1 – Jan 22, around the average first fall frost (Jan 15). Warm-season lawns then go brown-dormant for winter, which is normal.
What grass grows best in St Petersburg?
Florida is warm-season country: Bermuda, Zoysia, St. Augustine, centipede, bahia, buffalo. See the grass guides linked below for identification and care.