When to plant kale in Kentucky
Kentucky’s average last spring frost is April 18, and the first fall frost typically arrives around October 20 — about 185 frost-free days (USDA zones 6a, 6b, 7a). Kale needs 50–65 days to mature, which fits comfortably within Kentucky's growing season.
When to plant kale in Kentucky: the short answer
For a spring planting, plant out Mar 21 – Apr 7, with seeds started indoors Feb 28 – Mar 14. Seeds germinate in soil from 45 to 85°F.
Windows are ~1–2 week bands around each date. Frost dates are a statewide average from NOAA/NCEI normals; your town may differ by two weeks or more. Calendar year 2026.
How to grow kale in Kentucky, step by step
- Start seeds indoors (Feb 28 – Mar 14). Sow seeds ½ inch deep in seed-starting mix under bright light. They take 5-10 days to sprout, fastest in soil around 70°F. Harden seedlings off for a week before they go outside.
- Prepare the bed. It needs six or more hours of sun for the best growth, though four to six hours in partial shade is enough and loose soil at least 18 inches deep, with a pH between 6.0 and 7.5. Dig in compost before planting.
- Plant out (Mar 21 – Apr 7). Space plants about 16 inches apart in rows 20 inches apart. It tolerates hard frost, so it is one of the first crops to plant. As a cool-season crop it does best before summer heat arrives in Kentucky.
- Water and feed. Give it steady, even moisture, about an inch of water a week from rain or the hose.
- Watch for pests and problems. Pests: cabbage worm, cabbage looper, cabbage aphid, flea beetle, harlequin bug. Diseases and disorders: black rot, clubroot, downy mildew.
- Harvest (from about May 17 – Jun 1). Kale takes 50-65 days to reach harvest. Flavour turns sweet after a hard frost, so the fall crop is the good one. Pick lower leaves and let the plant keep growing upward.
Figures come from our crop data; dates use Kentucky’s average frost dates. More in the full kale growing guide.
Kale planting dates by USDA zone in Kentucky
Kentucky spans USDA zones 6a, 6b, 7a. Colder zones, usually higher or further inland, have a later last spring frost and an earlier first fall frost than the state average, so the kale dates shift with them.
When to plant kale in nearby states
| State | Last frost | Plant out |
|---|---|---|
| Kentucky (this page) | April 18 | Mar 21 – Apr 7 |
| North Carolina | April 5 | Mar 8 – Mar 25 |
| South Carolina | March 25 | Feb 25 – Mar 14 |
| Georgia | March 25 | Feb 25 – Mar 14 |
| Tennessee | April 10 | Mar 13 – Mar 30 |
Questions gardeners in Kentucky ask
When is the best time to plant kale in Kentucky?
Plant kale transplants outdoors in Kentucky between March 21 and April 7. That timing is set by Kentucky's average last spring frost of April 18.
When should I start kale seeds indoors in Kentucky?
Start seeds indoors between February 28 and March 14, about 6 weeks before the last frost, so the seedlings are ready to plant out from March 21.
Can I plant kale in the fall in Kentucky?
Yes. For a fall crop, sow between July 25 and August 11, so the crop matures in cool weather before Kentucky's first frost around October 20.
When will kale planted in Kentucky be ready to harvest?
Planted on time, kale is usually ready from about May 17 to June 1, 50-65 days after planting.
When is the last frost in Kentucky?
On average around April 18, with the first fall frost around October 20 - about 185 frost-free days. Your town may differ by two weeks or more.