Del Rio 4NW, TX Lawn Care Calendar

Every timing-sensitive lawn job in Del Rio 4NW, timed to the local climate record — not a national average.

Turf region
Warm-season
Bermuda, Zoysia, St. Augustine, centipede, bahia, buffalo
Last spring frost
Feb 19
median, 1991–2020
First fall frost
Dec 4
median, 1991–2020
Growing stretch
288 days
frost to frost
TaskDel Rio 4NW windowWhy then
Crabgrass pre-emergent Jan 29 – Feb 19 Southern soil warms early — don’t be late
Seed / sod / establish Mar 5 – Mar 19 Soil 65–70°F; a full season to mature
First feeding Mar 12 – Apr 2 At full green-up, not before
Aerate / dethatch Mar 19 – Apr 16 Peak growth heals the disturbance fast
Last nitrogen Oct 9 – Oct 23 6–8 weeks before frost — then stop
Growth stops / final mow Nov 20 – Dec 11 Dormancy arrives with first frost

Anchored to NOAA 1991–2020 climate normals at the DEL RIO 4NW station. Windows are estimates — soil temperature is the real trigger, especially for pre-emergent. Check your own ZIP with the lawn calendar lookup.

Del Rio 4NW lawn care, month by month

MonthTasks
January Apply crabgrass pre-emergent
February Apply crabgrass pre-emergent
March Seed, sod, or plug new grass · First feeding at full green-up · Aerate / dethatch
April First feeding at full green-up · 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 Growth stops — final mow
December Growth stops — final mow

Reading the Del Rio 4NW lawn year

Del Rio 4NW's lawn year runs on warmth: the lawn wakes after the last frost around Feb 19, hits full stride in midsummer, and goes dormant with the first frost around Dec 4. 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 Del Rio 4NW

Frequently asked questions

When should I plant warm-season grass in Del Rio 4NW?

Seed, sod, or plug Bermuda, Zoysia, and other warm-season grasses in late spring — around Mar 5 – Mar 19 in Del Rio 4NW, 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 Del Rio 4NW?

Aim for Jan 29 – Feb 19 — the estimated stretch when Del Rio 4NW soil approaches the ~55°F germination threshold, anchored to the average last frost (Feb 19). 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 Del Rio 4NW?

Keep mowing as long as the grass grows — in Del Rio 4NW that's typically until Nov 20 – Dec 11, around the average first fall frost (Dec 4). Warm-season lawns then go brown-dormant for winter, which is normal.

What grass grows best in Del Rio 4NW?

Texas is warm-season country: Bermuda, Zoysia, St. Augustine, centipede, bahia, buffalo. See the grass guides linked below for identification and care.