Cauliflower is a cool season vegetable, best planted in the fall or early spring. The part that we harvest is actually a dense cluster of flower buds.
Cultural tips for growing cauliflower, UC IPM
Planting
- Transplant seedlings 24 to 30 inches apart in February to April or September, possibly August or October.
- If plants are crowded, they may be prone to pests and may not form good heads.
- If growing your own seedlings, start the seeds 6 weeks before you want to plant.
Harvesting
- Harvest when the heads are of good size and still compact. If the head is starting to loosen, harvest it immediately.
- As the heads enlarge, they may become exposed to the sun and discolor. Avoid this by folding the leaves over the head or by tying the leaves together to protect the head from the sun. Not necessary for colored varieties, only for traditional white ones.
- Unlike broccoli, cauliflowers do not send out side shoots. Once the head has been harvested, pull the plant for compost or green waste.
Pest management
Pests and disorders of cauliflower, UC IPM
Recommended varieties for Santa Clara County*
| Amazing, OP | Classic cauliflower, pure white, deeply domed, self-blanching, delicious. 18 to 24 inches tall. Plant 24 to 30 inches apart. |
| Cheddar, Hybrid | Like 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 to 24 inches tall. Plant 24 to 30 inches apart. |
| Graffiti, Hybrid | Neon 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 to 24 inches tall. Plant 24 to 30 inches apart. |
| Green, OP | This Italian heirloom, Verde di Macerata, forms beautiful light green heads with no blanching needed. 18 to 24 inches tall. Plant 24 to 30 inches apart. |
| Romanesco, OP | Light green heads with incredible swirls that form amazing fractal shapes. Sweet nut-like taste. 18 to 24 inches tall. Plant 24 to 30 inches apart. |
| Snow Crown, Hybrid | Early snowball type is pure white, round and flavorful, weighing up to 2 lbs. each. 18 to 24 inches tall. Plant 24 to 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.