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Crop Guide

How to grow cauliflower

Brassica · Water-sensitive · Frost-tolerant

Primary source · UMN Extension
Cauliflower
Brad FerradaWritten by Brad Ferrada, who built Garzed · planting data from university extensions
Moisture range
40–60%
Days to maturity
70–100
Light
Full sun
Growing Degree Units
1250 · base 40°F
When to plant cauliflower in your zone
Indoor-start, transplant and harvest dates calibrated to your climate.
See planting calendar →

Growing notes

For the best quality cauliflower, grow it in rich, moist soil without drought stress. Dense, flavorful curds grow in cool temperatures, between 50°F and 70°F.

Harvest signs

when heads reach usable size, before the flower buds open. Heads should be smooth, firm, and compact

Planting referenceDepth, spacing, pH, light
Depth
one-fourth to one-half inch deep
Spacing
18 inches apart · Rows: 24 to 30 inches apart
pH range
6–7
Light
Full sun (6+ hr direct)
Pests & diseasesflea beetles, imported cabbage worm, cabbage looper, diamondback moth, +6 more
Common pests · 7
Flea beetles: chew small holes in leaves (Seedlings are most vulnerable to injury from this feeding)
Imported cabbage worm: larvae feed on the leaves (Young seedlings and transplants are most vulnerable to injury from this feeding)
Cabbage looper: larvae feed on the leaves (Young seedlings and transplants are most vulnerable to injury from this feeding)
Diamondback moth: larvae feed on the leaves (Young seedlings and transplants are most vulnerable to injury from this feeding)
Cabbage maggots: feed on the roots, injuring the plants, sometimes killing them
Swede midge: can cause cauliflower to produce no crown
Cabbageworms: eat large, irregular holes in the foliage
Common diseases · 3
Alternaria: causes spots on leaves and the crowns of cauliflower to rot
Black rot: causes yellow triangles on the edge of leaves and can cause rot in the cauliflower crowns
Clubroot: attacks cauliflower roots, causing roots to be swollen and plants to be stunted

Companions & antagonists

Plant near:DillMarigold
Keep apart from:Tomato
Tip: Blanch heads by tying leaves over curd.

Common questions

How much water does cauliflower need?

Cauliflower is water-sensitive — shallow roots and a steady thirst. Keep soil moisture in roughly the 40–60% range and don't let it dry out fully, or growth stalls and leafy crops turn bitter.

Can I grow cauliflower in a raised bed or container?

Yes — cauliflower does well in raised beds and is happy in a decent-sized container too, as long as drainage is good.

Does cauliflower come back every year?

No — cauliflower is an annual. It completes its life in one season, so you replant it each year.