Willows 6 W, CA Lawn Care Calendar

Every timing-sensitive lawn job in Willows 6 W, timed to the local climate record — not a national average.

Turf region
Transition zone
Tall fescue and Kentucky bluegrass alongside Bermuda and Zoysia
Last spring frost
Feb 21
median, 1991–2020
First fall frost
Dec 6
median, 1991–2020
Growing stretch
288 days
frost to frost

Cool-season lawns

TaskWillows 6 W windowWhy then
Crabgrass pre-emergent Jan 31 – Feb 21 Soil nearing 55°F — must beat germination
Light spring feeding Feb 21 – Mar 21 After green-up, before summer stress
Aerate + overseed Oct 7 – Oct 22 Fall growth surge; established before cold
Main fall feeding Oct 11 – Nov 8 The year’s most important nitrogen
Winterizer feeding Nov 8 – Nov 22 Root reserves for spring green-up
Final mow Nov 29 – Dec 20 Growth stops around first frost

Warm-season lawns

TaskWillows 6 W windowWhy then
Crabgrass pre-emergent Jan 31 – Feb 21 Southern soil warms early — don’t be late
Seed / sod / establish Mar 7 – Mar 21 Soil 65–70°F; a full season to mature
First feeding Mar 14 – Apr 4 At full green-up, not before
Aerate / dethatch Mar 21 – Apr 18 Peak growth heals the disturbance fast
Last nitrogen Oct 11 – Oct 25 6–8 weeks before frost — then stop
Growth stops / final mow Nov 22 – Dec 13 Dormancy arrives with first frost

Anchored to NOAA 1991–2020 climate normals at the WILLOWS 6 W station. Windows are estimates — soil temperature is the real trigger, especially for pre-emergent. Check your own ZIP with the lawn calendar lookup.

Willows 6 W lawn care, month by month

California sits in the turf transition zone, so the calendar depends on which grass family you have — they run on opposite schedules. Cool-season lawns (tall fescue, bluegrass) peak in spring and fall; warm-season lawns (Bermuda, Zoysia) do everything in the warm half. Not sure which you have? Start with the grass identification guides.

MonthCool-season lawnsWarm-season lawns
January Apply crabgrass pre-emergentApply crabgrass pre-emergent
February Apply crabgrass pre-emergent · Light feeding after green-upApply crabgrass pre-emergent
March Light feeding after green-upSeed, sod, or plug new grass · First feeding at full green-up · Aerate / dethatch
April Mow high (3–3.5″); water deeply in dry spells; no feeding in heatFirst feeding at full green-up · Aerate / dethatch
May Mow high (3–3.5″); water deeply in dry spells; no feeding in heatPeak growth — regular mowing, about 1″ of water a week
June Mow high (3–3.5″); water deeply in dry spells; no feeding in heatPeak growth — regular mowing, about 1″ of water a week
July Mow high (3–3.5″); water deeply in dry spells; no feeding in heatPeak growth — regular mowing, about 1″ of water a week
August Mow high (3–3.5″); water deeply in dry spells; no feeding in heatPeak growth — regular mowing, about 1″ of water a week
September Mow high (3–3.5″); water deeply in dry spells; no feeding in heatPeak growth — regular mowing, about 1″ of water a week
October Aerate + overseed · Main fall feedingLast nitrogen of the year
November Main fall feeding · Winterizer feeding · Final mow of the yearGrowth stops — final mow
December Final mow of the yearGrowth stops — final mow

Reading the Willows 6 W lawn year

Transition-zone timing cuts both ways in Willows 6 W: cool-season lawns get their big renovation in early fall (overseed Oct 7 – Oct 22), while warm-season lawns establish in late spring (Mar 7 – Mar 21) and want their last feeding by Oct 11 – Oct 25. The one shared date is the pre-emergent window in spring — both families need crabgrass stopped before soil crosses 55°F.

Grasses that fit Willows 6 W

Frequently asked questions

When should I overseed my lawn in Willows 6 W?

For cool-season grass (bluegrass, fescue, ryegrass), overseed in early fall — in Willows 6 W that means roughly Oct 7 – Oct 22, timed 45–60 days before the average first fall frost (Dec 6) so seedlings establish before cold. Spring works as a backup but collides with crabgrass season.

When should I plant warm-season grass in Willows 6 W?

Seed, sod, or plug Bermuda, Zoysia, and other warm-season grasses in late spring — around Mar 7 – Mar 21 in Willows 6 W, 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 Willows 6 W?

Aim for Jan 31 – Feb 21 — the estimated stretch when Willows 6 W soil approaches the ~55°F germination threshold, anchored to the average last frost (Feb 21). 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 Willows 6 W?

Keep mowing as long as the grass grows — in Willows 6 W that's typically until Nov 29 – Dec 20, around the average first fall frost (Dec 6). Take the final cut slightly shorter to discourage snow mold.

What grass grows best in Willows 6 W?

California is in the turf transition zone, so both families are common: Tall fescue and Kentucky bluegrass alongside Bermuda and Zoysia. Tall fescue is the usual cool-season pick and Bermuda or Zoysia the warm-season ones — they run on opposite calendars, so identify what you have first. See the grass guides linked below for identification and care.