Ogden, UT Lawn Care Calendar
In a typical year, put down crabgrass preventer in Ogden between Apr 17 and May 11. The best time to overseed is between Aug 11 and Sep 30. The last spring frost usually comes around Apr 19. Most lawns here are cool-season grass (tall fescue, Kentucky bluegrass, ryegrass).
Typical lawn care dates in Ogden
| 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 17 – May 11 |
| Spring fertilizerA light feeding once soil warms past 55°F and the grass is actively growing. | May 4 – Jun 8 |
| Overseeding & seedingLate summer to early fall: seedlings need about 6–10 weeks of growth before the first frost. | Aug 11 – Sep 30 |
| Fall fertilizerThe most important feeding for cool-season grass, from early fall until soil cools to about 45°F. | Sep 10 – Nov 3 |
Median dates, 2016–2025, from NOAA weather data for Ogden. This year's dates can differ by a few weeks.
Month-by-month lawn care in Ogden
- 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
- JulyNo treatments due; mow as needed.
- AugustOverseeding & seeding
- SeptemberOverseeding & seedingFall fertilizer
- OctoberFall fertilizer
- NovemberFall fertilizer
- DecemberNo treatments due; mow as needed.
Soil temperature in Ogden by month
Average soil temperature 4 inches down, estimated from 2016–2025 weather. It bottoms out in January at 30°F and peaks in July at 78°F. Crabgrass preventer goes down when it reaches 50°F, usually around Apr 17.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 30°F | 33°F | 42°F | 48°F | 58°F | 69°F | 78°F | 76°F | 67°F | 53°F | 42°F | 32°F |
Ogden lawn timing, year by year
Over the last 10 years, soil in Ogden reached 50°F, the signal for crabgrass preventer, as early as Mar 15 (2017) and as late as Apr 30 (2021): 46 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 (Apr 19) and first fall frost (Oct 25), the growing season lasts about 189 days.
| Year | Crabgrass window opened | Last spring frost | First fall frost |
|---|---|---|---|
| 2025 | Apr 10 | Apr 20 | Oct 28 |
| 2024 | Apr 13 | May 2 | Oct 30 |
| 2023 | Apr 29 | Apr 20 | Oct 27 |
| 2022 | Mar 27 | Apr 14 | Oct 24 |
| 2021 | Apr 30 | Apr 13 | Oct 15 |
| 2020 | Apr 22 | Apr 18 | Oct 24 |
| 2019 | Apr 20 | Apr 12 | Oct 10 |
| 2018 | Apr 21 | Apr 18 | Oct 15 |
| 2017 | Mar 15 | May 18 | Oct 15 |
| 2016 | Apr 8 | Mar 20 | Nov 17 |
Estimated from daily temperatures for Ogden. A dash means it didn't happen that year.
Frequently asked questions
When should I apply pre-emergent in Ogden?
In a typical year, between Apr 17 and May 11. 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 Ogden?
Early fall, typically Aug 11 – Sep 30, while soil cools from 65°F toward 50°F.
When is the last frost in Ogden?
The median last spring frost is Apr 19 and the median first fall frost is Oct 25 (2016–2025).
How long is the growing season in Ogden?
About 189 days, from the median last spring frost on Apr 19 to the median first fall frost on Oct 25 (2016–2025).
Lawn care guides
More Utah lawn calendars
Nearby cities in other states
- Pocatello, ID 117 miles away · crabgrass preventer Apr 29 – May 22
- Idaho Falls, ID 157 miles away · crabgrass preventer May 3 – Jun 6
- Elko, NV 199 miles away · crabgrass preventer May 2 – May 28
- Grand Junction, CO 234 miles away · crabgrass preventer Apr 6 – May 1