Broccoli plant profile
Brassica oleracea var. italica
An annual vegetable for full sun.
Last updated .
When to plant
When to plant Broccoli
Start seeds indoors
10 weeks before your last spring frost to 8 weeks before your last spring frost
Transplant outdoors
3 weeks before your last spring frost to 2 weeks before your last spring frost
Direct sow
3 weeks before your last spring frost to 2 weeks before your last spring frost
Growing conditions
- Sun
- Full sun
- Water
- 1 in / week
- Planting depth
- 0.25 in
- Soil pH
- 6 to 7
- Lifecycle
- Annual
- Spacing
- 12 to 18 in apart, rows 24 in
Common problems
Watch for these
Also watch for: diamondback moth, swede midge, boron deficiency, buttoning.
By hardiness zone
Broccoli by zone
Planting dates for a typical location in each zone:
Evidence trail
Evidence behind this profile
Original extension and institutional publications behind the planting, care, and safety facts on this page.
- How to Grow Broccoli in Your Garden
Utah State University Extension. Supports indoor seed-starting timing (derived), outdoor transplant timing (direct), direct-sowing timing (direct), plant and row spacing (direct), planting depth (direct), and common problems (direct). Checked 2026-06-11.
- Growing broccoli in home gardens
University of Minnesota Extension. Supports water needs (direct), soil pH (direct), and common problems (direct). Checked 2026-06-11.