How to Grow Flowering Cabbage
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Flowering Cabbage
Brassica oleracea var. acephala
vegetableFlowering cabbage is an ornamental brassica grown for its stunning rosette-like heads of tightly packed, colorful leaves in shades of purple, pink, red, or white with contrasting green outer leaves. Unlike traditional cabbage, the center leaves do not form a solid head, instead creating an open, flower-like display. It is primarily grown as an ornamental but can be eaten as a cool-season vegetable.
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Example Flowering Cabbage timeline · Pittsburgh, PA (Zone 6b)
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Plant Flowering Cabbage
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Flowering Cabbage
Around Jun 26≈ 70 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Flowering Cabbage dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 3-10; best as a fall/winter crop in cool climates
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Get my Flowering Cabbage timeline →Growth Stages
Seedling
2-3 weeksTiny seed leaves emerge; plant develops first true leaves with visible texture
Keep soil moist but not soggy. Provide bright light indoors if starting seeds. Thin or transplant to prevent crowding.
Vegetative Growth
4-6 weeksPlant develops 8-10 true leaves; forms rosette structure. Outer leaves are green and larger.
Maintain consistent watering and fertilize every 2-3 weeks with balanced or high-nitrogen fertilizer. Mulch around plants to retain moisture.
Color Development
3-4 weeksCenter leaves begin showing pink, purple, red, or white coloration; outer leaves may remain green or start color change
Colors intensify as temperatures cool (below 50°F at night ideally). Reduce nitrogen fertilizer; provide phosphorus and potassium to enhance pigmentation.
Peak Display
2-4 weeks (lasts longer in cool conditions)Full rosette formation with vibrant, contrasting colors in center leaves; flower-like appearance is most striking
Monitor for pests and diseases. Continue watering consistently. Frost enhances color intensity and flavor if eaten.
Late Season
1-2 weeks or longer depending on conditionsPlant may bolt and produce flower stalks if exposed to prolonged heat or if variety naturally flowers; edible quality declines
Harvest before bolting if desired for eating. Can remain ornamental for extended period in cool climates.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Use floating row covers early in season. Handpick caterpillars. Apply Bacillus thuringiensis (Bt) spray. Companion plant with thyme and sage.
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Handpick or use Bt spray. Install row covers. Encourage parasitic wasps by planting flowers like alyssum nearby.
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Use row covers on young plants. Dust with diatomaceous earth. Apply neem oil spray. Plant trap crops like radish nearby.
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Strong water spray to dislodge. Use neem oil or insecticidal soap. Attract beneficial insects with flowers. Avoid excess nitrogen fertilizer.
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Handpick in early morning or evening. Use copper tape barriers. Beer traps. Diatomaceous earth. Encourage predatory beetles and ground beetles.
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Maintain soil pH above 6.8. Avoid planting in infected soil. Rotate crops. Use resistant varieties if available. Disinfect tools.
Uses
Cooked or raw vegetable
CulinaryThe inner colored leaves are edible and milder than regular cabbage with a slightly sweet flavor. Young outer leaves are tender and can be used raw in salads or cooked in stir-fries, soups, and braised dishes. [source]
Fall and winter garden display
OrnamentalFlowering cabbage is prized as an ornamental plant for autumn and winter gardens, providing color and texture when most other plants have faded. The vibrant center rosette creates a stunning focal point in borders, containers, and landscape arrangements. [source]
Nutritional and anti-inflammatory benefits
MedicinalLike all brassicas, flowering cabbage contains glucosinolates and other phytochemicals with potential anti-inflammatory and cancer-preventive properties. Rich in vitamins C and K, and provides fiber and antioxidants. [source]
Floral arrangements and decorations
HouseholdThe colorful heads can be cut and used in fresh fall arrangements, dried for winter crafts, or displayed as table centerpieces. Their unique texture and color palette complement seasonal decorations. [source]
Pollinator and beneficial insect support
WildlifeIf allowed to flower and bolt, flowering cabbage produces nectar and pollen that attract bees, butterflies, and other beneficial insects. Dense foliage provides shelter for ground-dwelling predatory insects. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
For ornamental display: Harvest when the rosette is fully colored and tightly packed, typically 70-100 days after transplanting. Leave outer green leaves on plant. For eating: Harvest outer leaves as needed starting when plant is mature, or cut entire head at soil level. Flowering cabbage is most flavorful after light frost. Can be left in garden as long as temperatures don't drop below 0°F; many varieties tolerate sustained cold.
Fun Facts
- 🌱 Flowering cabbage develops its most vibrant colors in cool temperatures, especially after frost. A light frost of 28-32°F actually intensifies pigmentation and sweetens the flavor by converting starches to sugars.
- 🌱 Unlike heading cabbage, flowering cabbage varieties are specifically bred to maintain an open, rose-like rosette and resist forming a solid head, even in ideal growing conditions.
- 🌱 Flowering cabbage is a relatively modern ornamental development in Western gardening, but has been used decoratively in Asian gardens for centuries, particularly in China and Japan.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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