Langlois #2, OR Lawn Care Calendar

Every timing-sensitive lawn job in Langlois #2, 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
Mar 16
median, 1991–2020
First fall frost
Nov 29
median, 1991–2020
Growing stretch
258 days
frost to frost
TaskLanglois #2 windowWhy then
Crabgrass pre-emergent Feb 23 – Mar 16 Soil nearing 55°F — must beat germination
Light spring feeding Mar 16 – Apr 13 After green-up, before summer stress
Aerate + overseed Sep 30 – Oct 15 Fall growth surge; established before cold
Main fall feeding Oct 4 – Nov 1 The year’s most important nitrogen
Winterizer feeding Nov 1 – Nov 15 Root reserves for spring green-up
Final mow Nov 22 – Dec 13 Growth stops around first frost

Anchored to NOAA 1991–2020 climate normals at the LANGLOIS #2 station. Windows are estimates — soil temperature is the real trigger, especially for pre-emergent. Check your own ZIP with the lawn calendar lookup.

Langlois #2 lawn care, month by month

MonthTasks
January Dormant — keep leaves cleared, stay off frozen turf
February Apply crabgrass pre-emergent
March Apply crabgrass pre-emergent · Light feeding after green-up
April Light feeding after green-up
May Mow high (3–3.5″); water deeply in dry spells; no feeding in heat
June Mow high (3–3.5″); water deeply in dry spells; no feeding in heat
July Mow high (3–3.5″); water deeply in dry spells; no feeding in heat
August Mow high (3–3.5″); water deeply in dry spells; no feeding in heat
September Aerate + overseed
October Aerate + overseed · Main fall feeding
November Main fall feeding · Winterizer feeding · Final mow of the year
December Final mow of the year

Reading the Langlois #2 lawn year

Langlois #2 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 Sep 30 – Oct 15, and the year's main feeding all land before the Nov 29 frost closes the year.

Grasses that fit Langlois #2

Frequently asked questions

When should I overseed my lawn in Langlois #2?

For cool-season grass (bluegrass, fescue, ryegrass), overseed in early fall — in Langlois #2 that means roughly Sep 30 – Oct 15, timed 45–60 days before the average first fall frost (Nov 29) so seedlings establish before cold. Spring works as a backup but collides with crabgrass season.

When do I put down crabgrass preventer in Langlois #2?

Aim for Feb 23 – Mar 16 — the estimated stretch when Langlois #2 soil approaches the ~55°F germination threshold, anchored to the average last frost (Mar 16). 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 Langlois #2?

Keep mowing as long as the grass grows — in Langlois #2 that's typically until Nov 22 – Dec 13, around the average first fall frost (Nov 29). Take the final cut slightly shorter to discourage snow mold.

What grass grows best in Langlois #2?

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