Eric Hunt / CC BY 2.5
Brussels sprouts
Brassica oleracea var. gemmifera
Overview
Miniature cabbage-like sprouts that grow spiraling up a tall stalk, Brussels sprouts were developed near Brussels, Belgium in the 13th century. Their flavor dramatically improves after a frost, which converts starches to sugars, making them a perfect late-fall and winter crop. Modern cultivars have been bred for sweeter, less bitter flavor profiles than the sprouts many grew up dreading.
Growing Conditions
How to Grow Brussels sprouts
Brussels sprouts (Brassica oleracea var. gemmifera) is a biennial forb/herb that grows to about 2.5 feet tall and 1.5 feet wide.
To grow brussels sprouts, give it full sun. It is hardy across USDA hardiness zones 2–10. Plant it in firm, fertile, well-drained soil with consistent moisture, at a slightly acidic pH of 6–7.5. It does best with even, moderate watering.
Exact sowing, transplanting, and harvest months shift by climate zone — the planting calendar below lays them out for cool through hot regions. Its flowers appear from February through September, offering moderate value to pollinators. Give it what it asks for here, and it will find its place in the garden.
Companion Planting & Soil
Brussels sprouts grows well alongside dill, onion, garlic, sage, and thyme — but keep it clear of strawberry, tomato, and pole bean.
Good Companions
Avoid Planting Near
Planting Calendar
When to sow, transplant, and harvest by growing zone.
| Zone | Action | Months | Notes |
|---|---|---|---|
| Cold (1-2) | Start Indoors | Mar — Apr | Start indoors 12-14 weeks before first fall frost |
| Cold (1-2) | Transplant | May — Jun | Transplant after last frost; needs 90-100 days |
| Cold (1-2) | Harvest | Sep — Oct | Harvest bottom-up after first frost; twist off sprouts |
| Cool (3-4) | Start Indoors | Apr — May | Start indoors in spring for fall harvest |
| Cool (3-4) | Transplant | May — Jun | Transplant in late spring; harvest after frost |
| Cool (3-4) | Harvest | Oct — Nov | Harvest after frost from bottom up; cold sweetens flavor |
| Moderate (5-7) | Start Indoors | Apr — May | Start indoors; time for harvest after first frost |
| Moderate (5-7) | Transplant | Jun — Jul | Transplant midsummer for fall/winter harvest |
| Moderate (5-7) | Harvest | Oct — Dec | Harvest after first frost; frost is essential for best flavor |
| Warm (8-9) | Start Indoors | Jun — Jul | Start indoors midsummer for winter harvest |
| Warm (8-9) | Transplant | Jul — Aug | Transplant in late summer |
| Warm (8-9) | Harvest | Nov — Feb (wraps) | Harvest during cool months |
| Hot (10+) | Start Indoors | Jul — Aug | Start indoors in summer |
| Hot (10+) | Transplant | Aug — Sep | Transplant early fall; needs cool weather to form sprouts |
| Hot (10+) | Harvest | Dec — Feb (wraps) | Harvest in winter |
Uses
In the Kitchen
In the kitchen, brussels sprouts turns up in more than one form: roasted with olive oil until caramelized and crispy; shredded raw into salads and slaws; sautéed with bacon, balsamic, or maple glaze.
Medicinal & Folk Use
In herbal and folk tradition, it has been valued in several ways: high in glucosinolates linked to cancer prevention; rich in vitamin K and vitamin C; good source of ALA omega-3 fatty acids. These are traditional uses, not medical advice.
Beyond the Garden
Brussels sprouts earns its keep past the plate, too: architectural garden interest on tall stalks.
