Louisville, KY Lawn Care Calendar
In a typical year, put down crabgrass preventer in Louisville between Mar 11 and Apr 7. The best time to overseed is between Aug 20 and Oct 9. The last spring frost usually comes around Apr 6. Most lawns here are cool-season grass (tall fescue, Kentucky bluegrass, ryegrass).
Typical lawn care dates in Louisville
| Task | Typical window |
|---|---|
| Crabgrass preventer (pre-emergent)Crabgrass sprouts once soil stays above 55°F. Apply when soil reaches 50°F, before that happens. | Mar 11 – Apr 7 |
| Spring fertilizerA light feeding once soil warms past 55°F and the grass is actively growing. | Mar 31 – May 5 |
| Overseeding & seedingLate summer to early fall: seedlings need about 6–10 weeks of growth before the first frost. | Aug 20 – Oct 9 |
| Fall fertilizerThe most important feeding for cool-season grass, from early fall until soil cools to about 45°F. | Sep 24 – Nov 23 |
Median dates, 2016–2025, from NOAA weather data for Louisville. This year's dates can differ by a few weeks.
Month-by-month lawn care in Louisville
- JanuaryNo treatments due; mow as needed.
- FebruaryNo treatments due; mow as needed.
- MarchCrabgrass preventer (pre-emergent)Spring fertilizer
- AprilCrabgrass preventer (pre-emergent)Spring fertilizer
- MaySpring fertilizer
- JuneNo treatments due; mow as needed.
- JulyNo treatments due; mow as needed.
- AugustOverseeding & seeding
- SeptemberOverseeding & seedingFall fertilizer
- OctoberOverseeding & seedingFall fertilizer
- NovemberFall fertilizer
- DecemberNo treatments due; mow as needed.
Soil temperature in Louisville by month
Average soil temperature 4 inches down, estimated from 2016–2025 weather. It bottoms out in January at 35°F and peaks in July at 80°F. Crabgrass preventer goes down when it reaches 50°F, usually around Mar 11.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 35°F | 40°F | 48°F | 57°F | 67°F | 76°F | 80°F | 78°F | 73°F | 62°F | 48°F | 40°F |
Louisville lawn timing, year by year
Over the last 10 years, soil in Louisville reached 50°F, the signal for crabgrass preventer, as early as Feb 20 (2018) and as late as Apr 4 (2019): 43 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 6) and first fall frost (Nov 3), the growing season lasts about 211 days.
| Year | Crabgrass window opened | Last spring frost | First fall frost |
|---|---|---|---|
| 2025 | Mar 12 | Apr 9 | Nov 10 |
| 2024 | Mar 5 | Mar 24 | Nov 30 |
| 2023 | Feb 28 | Apr 24 | Oct 31 |
| 2022 | Mar 17 | Apr 10 | Oct 20 |
| 2021 | Mar 11 | Apr 3 | Nov 3 |
| 2020 | Mar 27 | May 9 | Nov 2 |
| 2019 | Apr 4 | Apr 2 | Nov 1 |
| 2018 | Feb 20 | Apr 17 | Nov 10 |
| 2017 | Feb 21 | Mar 19 | Oct 30 |
| 2016 | Mar 9 | Mar 7 | Nov 13 |
Estimated from daily temperatures for Louisville. A dash means it didn't happen that year.
Frequently asked questions
When should I apply pre-emergent in Louisville?
In a typical year, between Mar 11 and Apr 7. 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 Louisville?
Early fall, typically Aug 20 – Oct 9, while soil cools from 65°F toward 50°F.
When is the last frost in Louisville?
The median last spring frost is Apr 6 and the median first fall frost is Nov 3 (2016–2025).
How long is the growing season in Louisville?
About 211 days, from the median last spring frost on Apr 6 to the median first fall frost on Nov 3 (2016–2025).
Lawn care guides
More Kentucky lawn calendars
Nearby cities in other states
- Bloomington, IN 76 miles away · crabgrass preventer Apr 1 – Apr 24
- Cincinnati, OH 89 miles away · crabgrass preventer Mar 21 – Apr 19
- Evansville, IN 100 miles away · crabgrass preventer Mar 12 – Apr 13
- Indianapolis, IN 107 miles away · crabgrass preventer Mar 30 – Apr 22