When to Plant Thyme in Kentucky
Start Seeds Indoors
Wednesday, February 18, 2026
Transplant outdoors: Wednesday, April 29, 2026
State
Kentucky
USDA Zones
6a, 6b, 7a, 7b
Avg Last Frost
Wednesday, April 15, 2026
Cities Covered
783
Kentucky Planting Schedule by Zone
Kentucky spans 4 zones — find yours below for the most accurate dates.
| Zone | Last Frost | Start Indoors | Transplant |
|---|---|---|---|
| 6a | Monday, April 20, 2026 | Monday, February 23, 2026 | Monday, May 4, 2026 |
| 6b | Wednesday, April 15, 2026 | Wednesday, February 18, 2026 | Wednesday, April 29, 2026 |
| 7a | Friday, April 10, 2026 | Friday, February 13, 2026 | Friday, April 24, 2026 |
| 7b | Sunday, April 5, 2026 | Sunday, February 8, 2026 | Sunday, April 19, 2026 |
Dates based on average last frost. Check your local forecast before planting.
🌿 About Thyme
🤝 Companion Plants for Thyme
Good Companions
Growing Thyme in Kentucky: Complete Guide
Thyme (Thymus vulgaris) is a warm-season crop that needs a head start indoors before Kentucky's last frost. Most Kentucky gardeners begin seeds indoors around Wednesday, February 18, 2026 and move transplants outside around Wednesday, April 29, 2026, after the risk of frost has passed.
Because Kentucky stretches across 4 USDA hardiness zones (6a, 6b, 7a, 7b), planting windows can shift by as much as two to four weeks from one end of the state to the other. Gardeners in the warmer southern zones can start earlier, while those in cooler northern zones should wait until the zone table above shows their last frost has passed.
With 90 days to maturity, Thyme needs the indoor head start that Kentucky's growing season requires. Starting indoors ensures you have strong transplants ready the moment outdoor conditions are right.
Thyme requires full sun (6+ hours) and low (drought tolerant) moisture. Most of Kentucky receives adequate sunlight during the growing season, though gardeners in humid eastern regions should watch for fungal issues and ensure good air circulation.
For the most precise planting dates tailored to your exact location, enter your ZIP code on our planting calendar or use the zone table above to find the schedule for your area of Kentucky.
Frequently Asked Questions
When should I plant Thyme in Kentucky?
In Kentucky, start Thyme seeds indoors around Wednesday, February 18, 2026 and transplant outdoors around Wednesday, April 29, 2026 after your last frost. Kentucky spans zones 6a–7b, so dates shift by 1–4 weeks depending on where you live.
What is the last frost date in Kentucky?
Kentucky spans 4 USDA zones (6a, 6b, 7a, 7b), so last frost dates vary by region. Newport, Mazie (6a) sees frost until around Monday, April 20, 2026, while Frakes, Almo, Columbus (7b) is frost-free much earlier.
How long does Thyme take to grow in Kentucky?
Thyme takes about 90 days from transplant (or direct sow) to harvest. Starting seeds indoors in Kentucky gives you a head start so plants are ready to go out after the last frost.
What USDA zones does Kentucky cover for Thyme?
Kentucky includes zones 6a, 6b, 7a, 7b. Thyme grows well across all of these zones with adjusted timing — use the zone table above to find the right dates for your part of the state.
Find Precise Dates for Your City
Select a city for exact planting dates based on local frost records.