Pocatello, ID Lawn Care Calendar
In a typical year, put down crabgrass preventer in Pocatello between Apr 29 and May 22. The best time to overseed is between Jul 22 and Sep 10. The last spring frost usually comes around May 13. Most lawns here are cool-season grass (tall fescue, Kentucky bluegrass, ryegrass).
Typical lawn care dates in Pocatello
| Task | Typical window |
|---|---|
| Crabgrass preventer (pre-emergent)Crabgrass sprouts once soil stays above 55°F. Apply when soil reaches 50°F, before that happens. | Apr 29 – May 22 |
| Spring fertilizerA light feeding once soil warms past 55°F and the grass is actively growing. | May 15 – Jun 19 |
| Overseeding & seedingLate summer to early fall: seedlings need about 6–10 weeks of growth before the first frost. | Jul 22 – Sep 10 |
| Fall fertilizerThe most important feeding for cool-season grass, from early fall until soil cools to about 45°F. | Aug 17 – Oct 23 |
Median dates, 2016–2025, from NOAA weather data for Pocatello. This year's dates can differ by a few weeks.
Month-by-month lawn care in Pocatello
- JanuaryNo treatments due; mow as needed.
- FebruaryNo treatments due; mow as needed.
- MarchNo treatments due; mow as needed.
- AprilCrabgrass preventer (pre-emergent)
- MayCrabgrass preventer (pre-emergent)Spring fertilizer
- JuneSpring fertilizer
- JulyOverseeding & seeding
- AugustOverseeding & seedingFall fertilizer
- SeptemberOverseeding & seedingFall fertilizer
- OctoberFall fertilizer
- NovemberNo treatments due; mow as needed.
- DecemberNo treatments due; mow as needed.
Soil temperature in Pocatello by month
Average soil temperature 4 inches down, estimated from 2016–2025 weather. It bottoms out in January at 25°F and peaks in July at 72°F. Crabgrass preventer goes down when it reaches 50°F, usually around Apr 29.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 25°F | 29°F | 37°F | 45°F | 53°F | 63°F | 72°F | 71°F | 63°F | 50°F | 38°F | 29°F |
Pocatello lawn timing, year by year
Over the last 10 years, soil in Pocatello reached 50°F, the signal for crabgrass preventer, as early as Apr 9 (2016) and as late as May 16 (2022): 37 days apart. A fixed calendar date can't follow that, which is why the report above uses this year's soil temperature. Between the typical last spring frost (May 13) and first fall frost (Oct 5), the growing season lasts about 145 days.
| Year | Crabgrass window opened | Last spring frost | First fall frost |
|---|---|---|---|
| 2025 | Apr 26 | Apr 20 | Oct 6 |
| 2024 | Apr 13 | May 3 | Oct 19 |
| 2023 | Apr 30 | Apr 29 | Oct 27 |
| 2022 | May 16 | May 24 | Oct 24 |
| 2021 | Apr 30 | May 12 | Sep 30 |
| 2020 | Apr 27 | May 17 | Oct 23 |
| 2019 | Apr 20 | Jun 9 | Sep 30 |
| 2018 | May 5 | May 3 | Sep 25 |
| 2017 | May 5 | May 19 | Oct 3 |
| 2016 | Apr 9 | May 12 | Sep 6 |
Estimated from daily temperatures for Pocatello. A dash means it didn't happen that year.
Frequently asked questions
When should I apply pre-emergent in Pocatello?
In a typical year, between Apr 29 and May 22. Put it down when soil reaches 50°F, before it stays above 55°F and crabgrass starts sprouting. Early springs move this up by a week or more, so check this year's soil temperature above.
When is the best time to plant grass seed in Pocatello?
Early fall, typically Jul 22 – Sep 10, while soil cools from 65°F toward 50°F.
When is the last frost in Pocatello?
The median last spring frost is May 13 and the median first fall frost is Oct 5 (2016–2025).
How long is the growing season in Pocatello?
About 145 days, from the median last spring frost on May 13 to the median first fall frost on Oct 5 (2016–2025).
Lawn care guides
More Idaho lawn calendars
Nearby cities in other states
- Logan, UT 84 miles away · crabgrass preventer Apr 25 – May 20
- Ogden, UT 117 miles away · crabgrass preventer Apr 17 – May 11
- Salt Lake City, UT 149 miles away · crabgrass preventer Apr 6 – May 3
- Provo, UT 187 miles away · crabgrass preventer Apr 17 – May 9