How to Grow Collard Greens 'Flash Collards'

Collard Greens 'Flash Collards'

Brassica oleracea var. viridis 'Flash'

vegetable

'Flash Collards' is a fast-maturing collard green variety bred for quick harvest, typically ready in 45-55 days. This compact cultivar produces tender, blue-green leaves with excellent flavor and is ideal for gardeners seeking rapid turnaround. It tolerates both spring and fall growing seasons well and maintains good nutritional value.

Growing Conditions

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Sun: Full sun, 6-8 hours daily; tolerates partial shade in hot climates

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Water: Consistent moisture; provide 1-1.5 inches per week. Keep soil evenly moist but not waterlogged. More frequent watering needed during hot periods.

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Spacing: 12-18 inches

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Days to maturity: 45-55

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Planting depth: 0.25-0.5 inches for seeds; transplants at soil level

Soil

Type: Well-draining loamy soil rich in organic matter

pH: 6.0-7.5

Amendments:

Compost or aged manure Nitrogen-rich fertilizer Bone meal Kelp meal for trace minerals

Growing Zones

Find your zone →

Thrives in zones 2-9; prefers cooler seasons but tolerates heat better than most brassicas

2b 3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a

Growth Stages

Seedling

7-10 days

Cotyledons emerge, followed by first true leaves with characteristic lobed edges. Plants are delicate and low to ground.

Keep soil consistently moist. Provide bright light and good air circulation. Thin seedlings to proper spacing early.

Vegetative Growth

20-30 days

Rapid leaf development with increasingly larger, deeply lobed true leaves. Plant builds a sturdy stem and root system.

Maintain steady nitrogen availability. Water regularly. Begin light fertilizing at 3-4 weeks. Monitor for insect pests.

Leaf Expansion

10-15 days

Full-sized leaves mature with characteristic wrinkled texture and blue-green color. Plant reaches productive size.

Continue consistent watering and moderate feeding. Leaves are ready for first harvests when reaching 10-12 inches long.

Harvest Ready

30-60 days (ongoing harvest window)

Plant is compact and produces abundant tender leaves suitable for harvest. Leaves are most tender and flavorful at this stage.

Begin harvesting outer leaves from bottom up. Regular harvesting encourages more leaf production. Continue watering and feeding.

Bolt/Decline

Variable; begins around 60-75 days in warm weather

In late season or high heat, flower buds form on central stalk and leaves become tougher, more bitter.

Remove flower buds to extend harvest. In fall, cooler weather restores leaf quality. Replace plants if productivity declines significantly.

Companion Planting

Plan your garden →

Plant with:

Beets Carrots Chard Lettuce Onions Potatoes Thyme Mint Nasturtiums Marigolds

Avoid planting near:

Fennel Dill Cabbage (same pest pressure) Broccoli (same pest pressure) Kale (same pest pressure) Strawberries

Common Pests

Hand-pick; use floating row covers; apply Bacillus thuringiensis (Bt) spray; plant nasturtiums as trap crop
Use row covers on seedlings; apply neem oil or spinosad; plant marigolds nearby; ensure adequate soil moisture
Hand-pick and destroy eggs and insects; use reflective mulches; maintain plant vigor; remove crop debris promptly
Strong water spray to dislodge; insecticidal soap; neem oil; encourage beneficial predators like ladybugs
Hand-pick; Bt spray; spinosad; encourage parasitic wasps and birds
Yellow sticky traps; insecticidal soap; neem oil; remove heavily infested leaves

Uses

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Southern cooking and braising

Culinary

Flash Collards are tender enough for quick sautéing and braising with garlic, bacon, or vinegar—the hallmark of Southern cuisine. Their mild, slightly sweet flavor makes them ideal for this traditional preparation. [source]

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Fresh salads and raw consumption

Culinary

The 'Flash' variety's tender young leaves are excellent raw in salads with a light dressing, unlike tougher mature collards. They provide a nutritious base for creative salad compositions. [source]

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Nutritional powerhouse and anti-inflammatory

Medicinal

Collards are rich in vitamins K, A, and C, plus glucosinolates with potential anti-cancer properties. They support bone health, cardiovascular function, and contain compounds with documented anti-inflammatory effects. [source]

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Smoothies and juicing

Culinary

Young Flash Collard leaves blend smoothly into green smoothies and fresh juices, providing a mild-tasting nutrient boost without the bitter edge of tougher varieties. [source]

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Food security and season extension

Household

The quick 45-55 day maturity allows multiple successions per season, providing extended fresh harvests from spring through fall. Ideal for gardeners seeking reliable, fast-growing greens. [source]

This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.

Harvest Tips

Begin harvesting when outer leaves reach 10-12 inches long (typically 45-55 days). Pinch or cut outer leaves from the bottom upward, leaving the central growing point intact for continued production. Morning harvest yields crispest leaves. Younger leaves are more tender; older leaves become tough but still nutritious. Flash Collards can provide multiple harvests over 6-8 weeks. Stop harvesting 2-3 weeks before first frost in fall gardens.

Fun Facts

🌱 Flash Collards was specifically bred for home gardeners and market growers seeking a collard variety that matures in under 60 days, making it one of the fastest collard varieties available.
🌱 Collards are often called the 'cabbage of the poor' in African-American history, but they're nutritionally superior to many vegetables with exceptionally high vitamin K content—one cup provides over 600% of daily requirements.
🌱 Unlike most brassicas, collards actually taste sweeter and more tender after exposure to light frost, making fall gardens ideal for premium-quality harvests.

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