Eugene, OR Lawn Care Calendar
In a typical year, put down crabgrass preventer in Eugene between Apr 5 and May 13. The best time to overseed is between Aug 13 and Oct 2. The last spring frost usually comes around Apr 9. Most lawns here are cool-season grass (tall fescue, Kentucky bluegrass, ryegrass).
Typical lawn care dates in Eugene
| 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 5 – May 13 |
| Spring fertilizerA light feeding once soil warms past 55°F and the grass is actively growing. | May 6 – Jun 10 |
| Overseeding & seedingLate summer to early fall: seedlings need about 6–10 weeks of growth before the first frost. | Aug 13 – Oct 2 |
| Fall fertilizerThe most important feeding for cool-season grass, from early fall until soil cools to about 45°F. | Jul 16 – Nov 15 |
Median dates, 2016–2025, from NOAA weather data for Eugene. This year's dates can differ by a few weeks.
Month-by-month lawn care in Eugene
- 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
- JulyFall fertilizer
- AugustOverseeding & seedingFall fertilizer
- SeptemberOverseeding & seedingFall fertilizer
- OctoberOverseeding & seedingFall fertilizer
- NovemberFall fertilizer
- DecemberNo treatments due; mow as needed.
Soil temperature in Eugene by month
Average soil temperature 4 inches down, estimated from 2016–2025 weather. It bottoms out in January at 41°F and peaks in August at 70°F. Crabgrass preventer goes down when it reaches 50°F, usually around Apr 5.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 41°F | 42°F | 45°F | 50°F | 56°F | 62°F | 68°F | 70°F | 63°F | 54°F | 47°F | 42°F |
Eugene lawn timing, year by year
Over the last 10 years, soil in Eugene reached 50°F, the signal for crabgrass preventer, as early as Jan 28 (2024) and as late as Apr 23 (2023): 85 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 9) and first fall frost (Oct 27), the growing season lasts about 201 days.
| Year | Crabgrass window opened | Last spring frost | First fall frost |
|---|---|---|---|
| 2025 | Mar 25 | Feb 27 | Nov 19 |
| 2024 | Jan 28 | Apr 18 | Oct 25 |
| 2023 | Apr 23 | Mar 28 | Oct 28 |
| 2022 | Mar 23 | Apr 16 | Nov 10 |
| 2021 | Apr 17 | Apr 13 | Oct 13 |
| 2020 | Apr 10 | Apr 14 | Oct 23 |
| 2019 | Apr 1 | Apr 28 | Oct 10 |
| 2018 | Apr 7 | Apr 4 | Oct 16 |
| 2017 | Apr 22 | Mar 6 | Nov 1 |
| 2016 | Apr 1 | Feb 24 | Dec 5 |
Estimated from daily temperatures for Eugene. A dash means it didn't happen that year.
Frequently asked questions
When should I apply pre-emergent in Eugene?
In a typical year, between Apr 5 and May 13. 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 Eugene?
Early fall, typically Aug 13 – Oct 2, while soil cools from 65°F toward 50°F.
When is the last frost in Eugene?
The median last spring frost is Apr 9 and the median first fall frost is Oct 27 (2016–2025).
How long is the growing season in Eugene?
About 201 days, from the median last spring frost on Apr 9 to the median first fall frost on Oct 27 (2016–2025).
Lawn care guides
More Oregon lawn calendars
Nearby cities in other states
- Vancouver, WA 112 miles away · crabgrass preventer Apr 4 – May 9
- Yakima, WA 216 miles away · crabgrass preventer Apr 18 – May 6
- Tacoma, WA 223 miles away · crabgrass preventer Apr 17 – May 16
- Redding, CA 242 miles away · crabgrass preventer Feb 6 – Mar 28