When to plant in St. Matthews, KY
USDA Zone 7aSt. Matthews, 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 St. Matthews, while your frost dates still decide when annuals go out.
Frost probability
LOUISVILLE BOWMAN FLD · 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 St. Matthews’s own odds, recorded at LOUISVILLE BOWMAN FLD.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 3 | Apr 16 | Apr 2 | Oct 12 | Oct 23 | Nov 3 |
| 32°F | Apr 19 | Apr 3 | Mar 18 | Oct 21 | Nov 3 | Nov 16 |
| 28°F | Apr 5 | Mar 22 | Mar 4 | Nov 1 | Nov 13 | Dec 1 |
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 St. Matthews, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 14 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.
St. Matthews planting FAQ
When is the last spring frost in St. Matthews, KY?
St. Matthews's average last spring frost falls near April 3 — 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 St. Matthews, KY?
Expect St. Matthews's first fall frost near November 3 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is St. Matthews in?
St. Matthews 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 St. Matthews?
There are roughly 214 frost-free days in St. Matthews (a long growing season), running from the average last frost around April 3 to the first fall frost near November 3.
When should I plant tomatoes in St. Matthews?
In St. Matthews, start tomato seeds indoors around February 6–February 20, then transplant seedlings outdoors around April 10 once the danger of frost has passed.
Never miss a window in St. Matthews
An email when it’s time to start seeds, transplant, and sow — timed to St. Matthews’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Lyndon · 5 km
- Jeffersontown · 8 km
- Louisville/Jefferson County metro government · 9 km
- Jeffersonville · 11 km
- Clarksville · 14 km
- Shively · 16 km
- New Albany · 18 km
- Sellersburg · 21 km
Frost dates recorded at LOUISVILLE BOWMAN FLD, 3 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 St. Matthews, KY — Frost Dates & Zone 7a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00013810. Retrieved from https://blissgarden.com/kentucky/st-matthews.