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UC Master Gardeners of Santa Clara County

Cauliflower

Garden Help > Vegetables

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Cauliflowers Graffiti (purple), Romanesco (green), and Snowball (white)
Cauliflowers Graffiti (purple), Romanesco (green), and Snowball (white)

How to grow: Cauliflower, UC Davis Vegetable Research and Information Center

Pest management: Cauliflower cultural tips, pests, and diseases

The Basics

When to plant: Transplant into the garden February–April, September (maybe August or October). Plants are ready to transplant 8 weeks after seeding.

Harvest window: Harvest when the heads are of good size, usually 5 to 6 inches in diameter and still compact.

Care overview: As the heads enlarge, they may become exposed to the sun and discolor. Avoid this by folding the leaves over the heads or by typing the leaves together to protect the developing curd from the sun.

Recommended Varieties for Santa Clara County*

Amazing, OPClassic cauliflower, pure white, deeply domed, self-blanching, delicious. 18–24 inches tall. Plant 24–30 inches apart.
Cheddar, HybridLike a regular cauliflower, but orange! Sweet and tasty, with about 25 times as much beta-carotene as white cauliflower. No blanching needed. Delicious and striking. 18–24 inches tall. Plant 24–30 inches apart.
Graffiti, HybridNeon purple cauliflower keeps its color when cooked. Makes a great addition to any raw vegetable platter. The 10-inch heads do not require blanching. For a surprise, dress raw or cooked Graffiti with vinaigrette and watch it turn a bright magenta pink. 18–24 inches tall. Plant 24–30 inches apart.
Green, OPThis Italian heirloom, Verde di Macerata, forms beautiful light green heads with no blanching needed. 18–24 inches tall. Plant 24–30 inches apart.
Romanesco, OPLight green heads with incredible swirls that form amazing fractal shapes. Sweet nut-like taste. 18–24 inches tall. Plant 24–30 inches apart.
Snow Crown, HybridEarly snowball type is pure white, round and flavorful, weighing up to 2 lbs. each. 18–24 inches tall. Plant 24–30 inches apart.

Other recommended varieties: Early Snowball, Panther

* Many other varieties may also do well here in Santa Clara County. This list is based on UC Master Gardener trials, taste tests, and feedback from local growers.