Home › Crops › Broccoli › Zone 5a
When to plant broccoli in Zone 5a
In Zone 5a, start indoors around March 24 – March 31 and transplant around April 14 – April 28. For a fall crop, sow around June 22 – July 6.
Your broccoli timeline — Zone 5a
| Start indoors | March 24 – March 31 |
|---|---|
| Transplant | April 14 – April 28 |
| Sow for fall | June 22 – July 6 |
| Zone 5a last frost | ~05/12 |
| Zone 5a first frost | ~10/01 |
Start indoors; set out 2–4 weeks before the last frost. [src]Cited: University of New Hampshire Cooperative Extension — “Growing Vegetables: When to Plant Your Vegetable Garden”
Dates computed from Zone 5a's median NOAA frost normals and the cited rule. Your town may differ by a week or two — check your exact ZIP.
What you'll need
Affiliate links — as an Amazon Associate we may earn from qualifying purchases, at no extra cost to you.
Last verified 2026-07-16. Frost: NOAA NCEI 1991–2020. Zone: USDA 2023. Rule: University of New Hampshire Cooperative Extension — “Growing Vegetables: When to Plant Your Vegetable Garden”; UGA Extension (days to maturity).