Growing profiles
Choose how this crop will be grown. Dimensions, spacing and timing belong to the selected profile—not to the species as a single universal value.
Heading broccoli
Broccoli grown for a main central head followed by side shoots.
- Biological height
- 60–120 cm (24–47 in) Source
- Mature canopy
- 45–75 cm (18–30 in) Source
- Plant spacing
- 45–60 cm (18–24 in) Source
- Row spacing
- 60–75 cm (24–30 in) Source
- Layout
- single row · open ground Source
- Support
- Usually unnecessary
- Container
- At least 19 L (5 US gal) · 1 plant Source
- Best germination temperature
- 18 °C (64 °F) Source
Climate-relative calendar
Planning estimates become local dates after the gardener supplies frost dates and current conditions. Harvest and crop-removal dates are estimates: actual crop condition takes priority.
Sow Broccoli indoors49 days before last spring frost to 35 days before last spring frost SourceSourceRequired: Soil temperature between 5 °C (41 °F) and 30 °C (86 °F). Source
Harden off Broccoli35 days before last spring frost to 28 days before last spring frost Source
Transplant Broccoli outdoors21 days before last spring frost to 7 days after last spring frost SourceRequired: Soil temperature at least 0 °C (32 °F) for 3 consecutive days. SourceCheck before proceeding: Forecast frost risk no more than 25%. Source
Begin harvesting Broccoli55 days after transplanting to 75 days after transplanting Source
Finish harvesting Broccoli14 days after first harvest to 35 days after first harvest
Remove Broccoli cropthe expected end of harvest to 7 days after the expected end of harvest
Agronomy release agronomy-2026-07-11-r1 · reviewed 2026-07-11 by Gardeningist agronomic research synthesis. Each fact links to its supporting source.