Spokane 17 SSW lawn care, month by month
| Month | Tasks |
|---|---|
| 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 | Dormant — keep leaves cleared, stay off frozen turf |
| May | Apply crabgrass pre-emergent · Light feeding after green-up |
| June | Light feeding after green-up |
| July | Aerate + overseed · Main fall feeding |
| August | Main fall feeding · Winterizer feeding · Final mow of the year |
| September | Final mow of the year |
| October | Dormant — keep leaves cleared, stay off frozen turf |
| November | Dormant — keep leaves cleared, stay off frozen turf |
| December | Dormant — keep leaves cleared, stay off frozen turf |
Reading the Spokane 17 SSW lawn year
Spokane 17 SSW 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 6 – Jul 21, and the year's main feeding all land before the Sep 4 frost closes the year. With only ~97 frost-free days, the fall window is tight — miss it and the next real chance is spring.
Grasses that fit Spokane 17 SSW
Frequently asked questions
When should I overseed my lawn in Spokane 17 SSW?
For cool-season grass (bluegrass, fescue, ryegrass), overseed in early fall — in Spokane 17 SSW that means roughly Jul 6 – Jul 21, timed 45–60 days before the average first fall frost (Sep 4) so seedlings establish before cold. Spring works as a backup but collides with crabgrass season.
When do I put down crabgrass preventer in Spokane 17 SSW?
Aim for May 9 – May 30 — the estimated stretch when Spokane 17 SSW soil approaches the ~55°F germination threshold, anchored to the average last frost (May 30). 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 Spokane 17 SSW?
Keep mowing as long as the grass grows — in Spokane 17 SSW that's typically until Aug 28 – Sep 18, around the average first fall frost (Sep 4). Take the final cut slightly shorter to discourage snow mold.
What grass grows best in Spokane 17 SSW?
Washington is cool-season country: Kentucky bluegrass, tall fescue, perennial ryegrass, fine fescue. See the grass guides linked below for identification and care.