How to Grow Cabbage Family Crops
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Cabbage Family Crops
Brassica oleracea (and related Brassica species)
vegetableThe Brassica or cabbage family encompasses a diverse group of cool-season vegetables including cabbage, broccoli, cauliflower, kale, Brussels sprouts, and kohlrabi. All are nutrient-dense cruciferous vegetables that prefer cooler temperatures and are rich in vitamins, minerals, and cancer-fighting compounds. These crops are staples in vegetable gardens worldwide and can be grown in spring and fall seasons in most climates.
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Example Cabbage Family Crops timeline · Pittsburgh, PA (Zone 6b)
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Plant Cabbage Family Crops
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 Cabbage Family Crops
Around Jun 6≈ 50 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Cabbage Family Crops dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 2-9; best suited to cool-season growing in spring (zones 7+) and fall (all zones)
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Get my Cabbage Family Crops timeline →Growth Stages
Seedling
3-4 weeks from seedTiny plants with 2-4 true leaves, delicate and bright green. Root system developing under soil.
Provide bright light (grow lights or sunny window), keep soil moist but not waterlogged, maintain 60-70°F temperature. Harden off before transplanting outdoors.
Vegetative Growth
3-6 weeks after transplantingPlants develop sturdy stems and increasing leaf surface area. Foliage is thick and vigorous, blue-green color deepening.
Ensure consistent watering and nitrogen-rich feeding every 2-3 weeks. Mulch around plants to retain moisture and regulate soil temperature. Monitor for pests weekly. Thin seedlings to proper spacing.
Heading/Budding
2-4 weeksFor cabbage: head formation begins as outer leaves curl inward. For broccoli/cauliflower: central head (curd) develops; for kale: leaf production continues. For Brussels sprouts: sprout formation along main stem.
Continue consistent watering and balanced fertilization. Side-dress with compost or organic fertilizer. Support Brussels sprouts and cauliflower plants if needed. Manage pest pressure closely as head formation requires undamaged leaves.
Maturation
1-3 weeksHeads/curds reach full size and density. Cabbage heads feel firm when squeezed. Broccoli and cauliflower heads are tight and properly colored. Kale leaves are full-sized and tender.
Reduce nitrogen feeding to avoid excessive splitting in cabbage. For cauliflower, blanch heads by tying outer leaves together or wrapping to keep curds white (if growing white varieties). Check daily for harvest readiness.
Harvest
Continuous or once at peak maturityCrops reach peak flavor and nutrition. Cabbage is firm, broccoli florets are tight, cauliflower is dense, kale is tender and sweet after frost.
Harvest early morning when plants are cool and hydrated. Use sharp knife for clean cuts. For kale and collards, harvest outer leaves continuously to encourage production. Cold temperatures enhance sweetness in all brassicas.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Row covers on young plants, Bacillus thuringiensis (Bt) spray, handpicking, neem oil, beneficial parasitic wasps
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Bt spray, spinosad, neem oil, row covers, hand removal, encourage parasitic wasps and lacewings
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Row covers on seedlings, neem oil, spinosad, diatomaceous earth, reflective mulches, trap crops (mustard greens)
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Handpick (especially egg clusters on leaf undersides), row covers, neem oil, kaolin clay, remove plant debris
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Strong water spray, neem oil, insecticidal soap, reflective mulches, beneficial insects (ladybugs, lacewings, parasitic wasps)
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Crop rotation (3-year minimum), raise soil pH to 7.2+, remove infected plants immediately, use resistant varieties, avoid contaminated soil/water
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Resistant varieties, crop rotation, remove infected leaves, avoid overhead watering, sanitize tools, destroy infected plants
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Improve air circulation, avoid overhead watering, sulfur dust or spray, potassium bicarbonate, neem oil, plant spacing
Uses
Cruciferous Vegetables for Health
CulinaryCabbage family crops are rich in glucosinolates and sulforaphane, compounds with potent anti-inflammatory and potential anti-cancer properties. Raw or lightly cooked cabbage, broccoli, and kale provide maximum nutritional benefit and are staples in healthy diets worldwide. [source]
Traditional Fermentation & Preservation
CulinaryCabbage is the primary vegetable for sauerkraut and kimchi fermentation, where beneficial probiotics develop during the fermentation process. These preserved forms improve digestive health and provide shelf-stable nutrition. [source]
Digestive and Detox Support
MedicinalCabbage and kale have historically been used in traditional medicine to support digestion, reduce inflammation, and support liver detoxification. The high fiber and nutrient density make them valuable in therapeutic diets. [source]
Natural Dyes and PH Indicator
HouseholdRed cabbage juice is a natural pH indicator that changes color from pink to purple to blue depending on acidity; historically used as a food-safe dye. This makes it valuable for educational and artistic applications. [source]
Butterfly and Pollinator Host Plants
WildlifeBrassicas, especially when allowed to bolt and flower, attract various butterfly species and beneficial insects including lacewings and parasitic wasps that control garden pests. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Harvest cabbage when heads are firm and fully formed; cut with sharp knife at base. Broccoli and cauliflower: cut central head when curds are tight and before flowers open; side shoots will develop. Kale and collards: harvest outer leaves continuously starting 3-4 weeks after planting, or cut entire plant 2 inches above ground for regrowth. Brussels sprouts: pick from bottom up as they mature (1-2 inches diameter), or harvest entire stalk. Kohlrabi: harvest when 2-3 inches diameter for tenderness. All are sweeter after a frost. Harvest in cool morning for best quality.
Fun Facts
- 🌱 Brassica crops were selectively bred from a single wild ancestor (Brassica oleracea) into dramatically different forms—cabbage, broccoli, cauliflower, kale, and Brussels sprouts—through artificial selection over centuries, demonstrating the incredible plasticity of plant development.
- 🌱 Cold temperatures trigger the conversion of starches to sugars in cabbage family crops, making them taste noticeably sweeter after frost; some growers intentionally time harvests for after the first freeze to maximize sweetness.
- 🌱 Brussels sprouts got their name from Brussels, Belgium, where they were popular in the 16th century; they were relatively unknown in North America until the 20th century and remain unpopular with many due to childhood overcooked preparations that produce sulfurous odors.
Gardening Terms
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