Powell Field Stn, WY Lawn Care Calendar

Every timing-sensitive lawn job in Powell Field Stn, timed to the local climate record — not a national average.

Turf region
Cool-season
Kentucky bluegrass, tall fescue, perennial ryegrass, fine fescue
Last spring frost
May 19
median, 1991–2020
First fall frost
Sep 20
median, 1991–2020
Growing stretch
124 days
frost to frost
TaskPowell Field Stn windowWhy then
Crabgrass pre-emergent Apr 28 – May 19 Soil nearing 55°F — must beat germination
Light spring feeding May 19 – Jun 16 After green-up, before summer stress
Aerate + overseed Jul 22 – Aug 6 Fall growth surge; established before cold
Main fall feeding Jul 26 – Aug 23 The year’s most important nitrogen
Winterizer feeding Aug 23 – Sep 6 Root reserves for spring green-up
Final mow Sep 13 – Oct 4 Growth stops around first frost

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

Powell Field Stn lawn care, month by month

MonthTasks
January Dormant — keep leaves cleared, stay off frozen turf
February Dormant — keep leaves cleared, stay off frozen turf
March Dormant — keep leaves cleared, stay off frozen turf
April Apply crabgrass pre-emergent
May Apply crabgrass pre-emergent · Light feeding after green-up
June Light feeding after green-up
July Aerate + overseed · Main fall feeding
August Aerate + overseed · Main fall feeding · Winterizer feeding
September Winterizer feeding · Final mow of the year
October Final mow of the year
November Dormant — keep leaves cleared, stay off frozen turf
December Dormant — keep leaves cleared, stay off frozen turf

Reading the Powell Field Stn lawn year

Powell Field Stn runs on the classic northern rhythm: a short, important spring (pre-emergent before soil hits 55°F, one light feeding), a defensive summer (mow tall, water deep, feed nothing), and then the season that actually builds a lawn — early fall, when aeration, overseeding around Jul 22 – Aug 6, and the year's main feeding all land before the Sep 20 frost closes the year. With only ~124 frost-free days, the fall window is tight — miss it and the next real chance is spring.

Grasses that fit Powell Field Stn

Frequently asked questions

When should I overseed my lawn in Powell Field Stn?

For cool-season grass (bluegrass, fescue, ryegrass), overseed in early fall — in Powell Field Stn that means roughly Jul 22 – Aug 6, timed 45–60 days before the average first fall frost (Sep 20) so seedlings establish before cold. Spring works as a backup but collides with crabgrass season.

When do I put down crabgrass preventer in Powell Field Stn?

Aim for Apr 28 – May 19 — the estimated stretch when Powell Field Stn soil approaches the ~55°F germination threshold, anchored to the average last frost (May 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 Powell Field Stn?

Keep mowing as long as the grass grows — in Powell Field Stn that's typically until Sep 13 – Oct 4, around the average first fall frost (Sep 20). Take the final cut slightly shorter to discourage snow mold.

What grass grows best in Powell Field Stn?

Wyoming is cool-season country: Kentucky bluegrass, tall fescue, perennial ryegrass, fine fescue. See the grass guides linked below for identification and care.