St Bernard lawn care, month by month
| Month | Tasks |
|---|---|
| January | Apply crabgrass pre-emergent |
| February | Apply crabgrass pre-emergent · Seed, sod, or plug new grass · First feeding at full green-up |
| March | Seed, sod, or plug new grass · First feeding at full green-up · Aerate / dethatch |
| April | Aerate / dethatch |
| May | Peak growth — regular mowing, about 1″ of water a week |
| 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 | Last nitrogen of the year |
| December | Growth stops — final mow |
Reading the St Bernard lawn year
St Bernard's lawn year runs on warmth: the lawn wakes after the last frost around Feb 4, hits full stride in midsummer, and goes dormant with the first frost around Dec 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 Bernard
Frequently asked questions
When should I plant warm-season grass in St Bernard?
Seed, sod, or plug Bermuda, Zoysia, and other warm-season grasses in late spring — around Feb 18 – Mar 4 in St Bernard, 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 Bernard?
Aim for Jan 14 – Feb 4 — the estimated stretch when St Bernard soil approaches the ~55°F germination threshold, anchored to the average last frost (Feb 4). 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 Bernard?
Keep mowing as long as the grass grows — in St Bernard that's typically until Dec 1 – Dec 22, around the average first fall frost (Dec 15). Warm-season lawns then go brown-dormant for winter, which is normal.
What grass grows best in St Bernard?
Louisiana is warm-season country: Bermuda, Zoysia, St. Augustine, centipede, bahia, buffalo. See the grass guides linked below for identification and care.