When to plant Broccoli
A cool-season brassica. Transplant in early spring or late summer; it bolts in midsummer heat.
TypeVegetables
Frost toleranceHalf-hardy (light frost)
Days to maturity~65
When to plant Broccoli by USDA zone
| Zone | When to plant |
|---|---|
| Zone 1a | Start seeds indoors Apr 27–May 11 Transplant outdoors Jun 1–Jun 15 Direct sow outdoors May 9–May 30 |
| Zone 1b | Start seeds indoors Apr 22–May 6 Transplant outdoors May 27–Jun 10 Direct sow outdoors May 14–Jun 4 |
| Zone 2a | Start seeds indoors Apr 17–May 1 Transplant outdoors May 22–Jun 5 Direct sow outdoors May 19–Jun 9 |
| Zone 2b | Start seeds indoors Apr 11–Apr 25 Transplant outdoors May 16–May 30 Direct sow outdoors May 26–Jun 16 |
| Zone 3a | Start seeds indoors Apr 6–Apr 20 Transplant outdoors May 11–May 25 Direct sow outdoors Jun 2–Jun 23 |
| Zone 3b | Start seeds indoors Apr 1–Apr 15 Transplant outdoors May 6–May 20 Direct sow outdoors Jun 6–Jun 27 |
| Zone 4a | Start seeds indoors Mar 27–Apr 10 Transplant outdoors May 1–May 15 Direct sow outdoors Jun 12–Jul 3 |
| Zone 4b | Start seeds indoors Mar 22–Apr 5 Transplant outdoors Apr 26–May 10 Direct sow outdoors Jun 16–Jul 7 |
| Zone 5a | Start seeds indoors Mar 17–Mar 31 Transplant outdoors Apr 21–May 5 Direct sow outdoors Jun 25–Jul 16 |
| Zone 5b | Start seeds indoors Mar 12–Mar 26 Transplant outdoors Apr 16–Apr 30 Direct sow outdoors Jun 29–Jul 20 |
| Zone 6a | Start seeds indoors Mar 3–Mar 17 Transplant outdoors Apr 7–Apr 21 Direct sow outdoors Jul 11–Aug 1 |
| Zone 6b | Start seeds indoors Feb 25–Mar 11 Transplant outdoors Apr 1–Apr 15 Direct sow outdoors Jul 19–Aug 9 |
| Zone 7a | Start seeds indoors Feb 17–Mar 3 Transplant outdoors Mar 24–Apr 7 Direct sow outdoors Jul 27–Aug 17 |
| Zone 7b | Start seeds indoors Feb 11–Feb 25 Transplant outdoors Mar 18–Apr 1 Direct sow outdoors Aug 4–Aug 25 |
| Zone 8a | Start seeds indoors Feb 1–Feb 15 Transplant outdoors Mar 8–Mar 22 Direct sow outdoors Aug 12–Sep 2 |
| Zone 8b | Start seeds indoors Jan 25–Feb 8 Transplant outdoors Mar 1–Mar 15 Direct sow outdoors Aug 19–Sep 9 |
| Zone 9a | Start seeds indoors Jan 10–Jan 24 Transplant outdoors Feb 14–Feb 28 Direct sow outdoors Aug 29–Sep 19 |
| Zone 9b | Start seeds indoors Dec 28–Jan 11 Transplant outdoors Feb 1–Feb 15 Direct sow outdoors Sep 8–Sep 29 |
| Zone 10a | Start seeds indoors Dec 13–Dec 27 Transplant outdoors Jan 17–Jan 31 Direct sow outdoors Sep 21–Oct 12 |
| Zone 10b | Start seeds indoors Nov 27–Dec 11 Transplant outdoors Jan 1–Jan 15 Direct sow outdoors Sep 24–Oct 15 |
| Zone 11a | Start seeds indoors Nov 13–Nov 27 Transplant outdoors Dec 18–Jan 1 Direct sow outdoors Sep 24–Oct 15 |
| Zone 11b | Start seeds indoors Nov 13–Nov 27 Transplant outdoors Dec 18–Jan 1 Direct sow outdoors Sep 24–Oct 15 |
| Zone 12a | Start seeds indoors Nov 13–Nov 27 Transplant outdoors Dec 18–Jan 1 Direct sow outdoors Sep 24–Oct 15 |
| Zone 12b | Start seeds indoors Nov 13–Nov 27 Transplant outdoors Dec 18–Jan 1 Direct sow outdoors Sep 24–Oct 15 |
| Zone 13a | Start seeds indoors Nov 13–Nov 27 Transplant outdoors Dec 18–Jan 1 Direct sow outdoors Sep 24–Oct 15 |
| Zone 13b | Start seeds indoors Nov 13–Nov 27 Transplant outdoors Dec 18–Jan 1 Direct sow outdoors Sep 24–Oct 15 |