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.
- Typical mature height
- 24–47 in (60–120 cm) Editorial synthesisbasis
- Mature canopy
- 18–30 in (45–75 cm) Editorial synthesisbasis
- Plant spacing
- 18–24 in (45–60 cm) Editorial synthesisbasis
- Row spacing
- 24–30 in (60–75 cm) Editorial synthesisbasis
- Planting arrangement
- single row · open ground Editorial synthesisbasis
- Support
- Usually unnecessary
- Optional container
- At least 5 US gal (19 L) · 1 plant Editorial synthesisbasis
- Best germination range
- 41–86 °F (5–30 °C) Editorial synthesisbasis
Climate-relative calendar
Frost and transplant rules become local dates when climate data is available. Cultivar maturity and crop condition are never replaced by a fabricated date.
Sow Broccoli indoors49 days before last spring frost to 35 days before last spring frost Direct sourceEditorial synthesisbasisRequired: Soil temperature between 41 °F (5 °C) and 86 °F (30 °C). Editorial synthesisbasis
Harden off Broccoli35 days before last spring frost to 28 days before last spring frost Editorial synthesisbasis
Transplant Broccoli outdoors21 days before last spring frost to 7 days after last spring frost Editorial synthesisbasisRequired: Soil temperature at least 32 °F (0 °C) for 3 consecutive days. Editorial synthesisbasisCheck before proceeding: Forecast frost risk no more than 25%. Editorial synthesisbasis
Begin harvesting Broccoli55 days after transplanting to 75 days after transplanting Planning estimatebasis
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. Direct-source links indicate close source support; synthesis and planning estimates are labeled separately.