When to plant in Louisville/Jefferson County metro government, KY
USDA Zone 7aLouisville/Jefferson County metro government, Kentucky frost dates, USDA zone, and a full-year planting calendar, drawn from the nearest NOAA station and tuned to the local season.
Zone 7a means many perennials and even some tender shrubs overwinter in Louisville/Jefferson County metro government, while your frost dates still decide when annuals go out.
Frost probability
LOUISVILLE WFO · 1991–2020The date the last spring and first fall frost occur, by threshold and probability. A 90% date is later in spring — and earlier in fall — than a 10% date; the 50% · 32°F row is what most gardeners plan around. These are Louisville/Jefferson County metro government’s own odds, recorded at LOUISVILLE WFO.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 5 | Apr 19 | Apr 4 | Oct 11 | Oct 23 | Nov 4 |
| 32°F | Apr 23 | Apr 6 | Mar 23 | Oct 21 | Nov 1 | Nov 15 |
| 28°F | Apr 9 | Mar 26 | Mar 9 | Nov 1 | Nov 11 | Nov 29 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Full-year planting calendar
Each bar is the exact window to take a planting action in Louisville/Jefferson County metro government, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 8 km · complete 32°F normalsWhen stations disagree by more than a few days, that spread is real microclimate variation — elevation, water, urban heat. Judge which station best matches your own yard.
Louisville/Jefferson County metro government planting FAQ
When is the last spring frost in Louisville/Jefferson County metro government, KY?
Louisville/Jefferson County metro government's average last spring frost falls near April 6 — the 50% mark at 32°F in the 1991–2020 normals. Hold tender transplants until the risk has passed, then plant out.
When is the first fall frost in Louisville/Jefferson County metro government, KY?
In Louisville/Jefferson County metro government, the first 32°F freeze of fall lands around November 1 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Louisville/Jefferson County metro government in?
Louisville/Jefferson County metro government is in USDA hardiness zone 7a. In zone 7a, winters are moderate — most common vegetables grow well in season.
How long is the growing season in Louisville/Jefferson County metro government?
There are roughly 209 frost-free days in Louisville/Jefferson County metro government (a moderate growing season), running from the average last frost around April 6 to the first fall frost near November 1.
When should I plant tomatoes in Louisville/Jefferson County metro government?
In Louisville/Jefferson County metro government, start tomato seeds indoors around February 9–February 23, then transplant seedlings outdoors around April 13 once the danger of frost has passed.
Never miss a window in Louisville/Jefferson County metro government
An email when it’s time to start seeds, transplant, and sow — timed to Louisville/Jefferson County metro government’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Jeffersontown · 8 km
- St. Matthews · 9 km
- Lyndon · 12 km
- Shively · 15 km
- Mount Washington · 16 km
- Jeffersonville · 20 km
- Clarksville · 20 km
- Shepherdsville · 21 km
Frost dates recorded at LOUISVILLE WFO, 6 km from the city center · 1991–2020 NOAA climate normals · zone from the USDA/PRISM 2023 map. How we compute this.
BlissGarden. "When to Plant in Louisville/Jefferson County metro government, KY — Frost Dates & Zone 7a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00154958. Retrieved from https://blissgarden.com/kentucky/louisville-jefferson-county-metro-government.