White Hot Cauliflower
Brassica oleracea var. botrytis 'White Hot'
A heat-tolerant F1 hybrid that produces pure white, dense heads even in challenging summer conditions where other cauliflowers fail. This variety is perfect for gardeners in warmer climates or those wanting extended harvest seasons. The self-blanching heads stay white without tying, making it both beautiful and low-maintenance.
Harvest
68-75d
Days to harvest
Sun
Full sun to partial shade
Zones
6–9
USDA hardiness
Height
10-24 inches
Planting Timeline
Showing dates for White Hot Cauliflower in USDA Zone 7
All Zone 7 brassica →Zone Map
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White Hot Cauliflower · Zones 6–9
Growing Details
Zone-by-Zone Planting Calendar
| Zone | Indoor Start | Transplant | Direct Sow | Harvest |
|---|---|---|---|---|
| Zone 3 | March – April | May – June | May – June | July – October |
| Zone 4 | March – April | May – June | April – June | July – October |
| Zone 5 | February – March | April – May | April – May | June – November |
| Zone 6 | February – March | April – May | April – May | June – November |
| Zone 7 | February – March | April – May | March – May | May – November |
| Zone 8 | January – February | March – April | March – April | May – December |
| Zone 9 | January – January | February – March | February – March | April – December |
| Zone 10 | January – January | February – March | January – March | March – December |
Complete Growing Guide
Light: Full sun (6 or more hours of direct sunlight a day), Partial Shade (Direct sunlight only part of the day, 2-6 hours). Soil: Clay, Loam (Silt), Sand. Soil pH: Acid (<6.0), Neutral (6.0-8.0). Drainage: Good Drainage, Moist. Height: 0 ft. 10 in. - 2 ft. 0 in.. Spread: 1 ft. 0 in. - 2 ft. 0 in.. Spacing: 12 inches-3 feet. Growth rate: Medium. Maintenance: Medium. Propagation: Seed, Stem Cutting. Regions: Coastal, Mountains, Piedmont.
Harvesting
The fruits dry and split when ripe.
Color: Brown/Copper, Green. Type: Siliqua. Length: > 3 inches.
Garden value: Edible
Harvest time: Fall, Summer
Bloom time: Spring, Summer
Edibility: The foliage is edible raw or cooked but when cooked can emit an unpleasant odor.
Storage & Preservation
Fresh White Hot Cauliflower keeps best when stored unwashed in the refrigerator crisper drawer, wrapped loosely in perforated plastic bags. Properly stored heads maintain quality for 7-10 days, though they're best used within the first week for optimal flavor and texture.
For longer preservation, blanch florets in boiling water for 3 minutes, then plunge into ice water before freezing in airtight containers for up to 8 months. White Hot's dense, fine-grained texture makes it excellent for pickling – the heads hold their shape well in quick pickle brines or traditional lacto-fermentation.
Dehydrating works well for making cauliflower powder – slice heads thin and dry at 125°F until completely crisp. The resulting powder adds subtle nutty flavor to soups and can substitute for some flour in low-carb baking applications.
History & Origin
White Hot Cauliflower represents a significant breakthrough in modern hybrid breeding, developed specifically to address the challenges of growing cauliflower in warm climates. Traditional cauliflower varieties, originating from the cool, moist conditions of the Mediterranean, struggled in hot, humid summers common across much of the United States.
This F1 hybrid was created through selective breeding programs in the late 20th century, focusing on heat tolerance while maintaining the pure white color and dense head formation that defines quality cauliflower. The variety combines genetic material from heat-tolerant Asian brassica varieties with European cauliflower lines known for their superior flavor and texture.
The development of White Hot and similar heat-tolerant varieties has revolutionized cauliflower production, allowing commercial growers and home gardeners in zones 7-10 to successfully grow cauliflower during extended seasons. This breeding achievement opened up cauliflower cultivation to millions of gardeners who previously couldn't grow this crop reliably due to climate limitations.
Advantages
- +Attracts: The foliage is edible raw or cooked but when cooked can emit an unpleasant odor.
- +Wildlife value: It serves as a host plant for butterflies, moths, flies, sawflies and beetles.
- +Edible: The foliage is edible raw or cooked but when cooked can emit an unpleasant odor.
Companion Plants
Plant Together
Dill
Attracts beneficial insects like parasitic wasps that control cabbage worms
Onions
Repel cabbage maggots, aphids, and other brassica pests with their strong scent
Marigolds
Deter aphids, whiteflies, and other harmful insects while attracting beneficial predators
Nasturtiums
Act as trap crop for aphids and flea beetles, drawing pests away from cauliflower
Celery
Repels cabbage worms and white cabbage butterfly with its strong aroma
Spinach
Provides ground cover and has different nutrient needs, reducing competition
Garlic
Natural fungicide properties help prevent clubroot and other soil-borne diseases
Chamomile
Improves soil health and may enhance cauliflower flavor while attracting beneficial insects
Keep Apart
Strawberries
Compete for similar nutrients and may harbor pests that also attack brassicas
Tomatoes
Both are heavy feeders competing for nutrients, and tomatoes may inhibit brassica growth
Pole Beans
Can shade cauliflower and compete for space, while beans may stunt brassica development
Nutrition Facts
Per 100g serving. % Daily Value based on 2,000 calorie diet. Source: USDA FoodData Central (FDC #2685573)
Pests & Disease Resistance
Resistance
Good heat tolerance and resistance to downy mildew
Common Pests
Cabbage worms, aphids, flea beetles, cabbage root fly
Diseases
Black rot, clubroot, bacterial soft rot, downy mildew