Growing broccoli in zone 6
Broccoli buttons (makes tiny heads) if transplants sit through hard freezes or hit heat too young — timing matters more than for most crops. After the central head, most varieties produce weeks of side shoots.
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 broccoli in zone 6?
Transplant Mar 20 – Apr 3, 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 broccoli in zone 6?
Sow indoors Feb 20 – Mar 6 — that's 7 to 5 weeks before the typical Apr 10 last frost, giving sturdy transplants exactly when the garden is ready for them.
Can I direct sow broccoli in zone 6?
Not usefully in zone 6 — broccoli needs more growing time than direct sowing allows, which is why it's raised from transplants started indoors Feb 20 – Mar 6.
Can I plant broccoli for a fall harvest in zone 6?
Yes — sow Jul 16 – Jul 30, 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.