Growing kale in zone 6
Spring kale is good; fall kale is better — light frosts convert starches to sugars. Harvest outer leaves and the plant keeps producing for months. In zones 7+, kale often stands all winter.
Zone 6 covers mid-Atlantic, Ohio Valley, Kansas, inland Pacific Northwest — nearly 200 frost-free days — almost everything grows, and fall gardens are easy. Zone dates are medians: frost timing varies within a zone with elevation and terrain, so treat these windows as a solid default and refine them with your own city’s dates below.
Make it local
These windows use zone 6's typical frost dates (last frost ~Apr 10, first frost ~Oct 22). For windows computed from your frost dates, run the ZIP code frost lookup and open the planting calendar — it remembers your city. The seed starting scheduler turns the whole seed rack into one printable, date-sorted list.
Frequently asked questions
When do I plant kale in zone 6?
Transplant Mar 13 – Mar 27, counted from zone 6's typical last frost around Apr 10. As a hardy crop it tolerates the light frosts on either side of that window.
When should I start seeds indoors for kale in zone 6?
Sow indoors Feb 27 – Mar 13 — that's 6 to 4 weeks before the typical Apr 10 last frost, giving sturdy transplants exactly when the garden is ready for them.
Can I direct sow kale in zone 6?
Yes — direct sow Mar 13 – Mar 27. Transplants buy a head start, but direct-sown plants catch up quickly once soil warms.
Can I plant kale for a fall harvest in zone 6?
Yes — sow Jul 30 – Aug 13, counted back from the typical Oct 22 first frost so plants mature before serious cold. Light fall frosts improve flavor rather than ending the crop.