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Collard Greens

Brassica oleracea var. viridis

Vegetables📅 60–80 (first harvest), then ongoing days to harvest☀️ Full sun to partial shade (4–6+ hours)

Overview

Collard greens are among the most reliable leafy greens for Florida gardens. Unlike lettuce and spinach, which bolt quickly in Florida's warmth, collards tolerate both heat and cold, giving them one of the longest productive seasons of any leafy crop in the state. A well-maintained collard plant can produce harvestable leaves for months, making it one of the best returns on garden space.

Collards are a nutritional powerhouse — ounce for ounce, they contain more calcium than milk and more vitamin C than oranges. In Florida's traditional Southern cooking, they're typically slow-simmered with smoked pork, but modern preparation includes quick sautés, raw salads, smoothie additions, and wraps using the large leaves as a grain-free alternative to tortillas.

Growing in Florida

Collards are deeply rooted in Florida's food culture, connecting the state's Southern heritage with its diverse Caribbean and African diaspora communities, where similar leafy greens (callaloo, taro leaves) are kitchen staples. In Florida gardens, collards fill the important role of a productive cool-season green that can be harvested over many months. UF/IFAS recommends fall planting for Florida gardeners, with harvest continuing through winter and spring. In Central and South Florida, collards can produce well into April before summer heat and pest pressure make them less productive.

Planting Calendar

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North FL
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Central FL
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South FL
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Growing Guide

🌱Soil Type
Fertile, well-drained soil amended with compost
⚗️Soil pH
6.0–6.8
☀️Sun Requirement
Full sun to partial shade (4–6+ hours)
💧Water Needs
1–1.5 inches per week, consistent moisture for tender leaves
📏Spacing
18–24 inches apart, rows 36 inches apart
📅Days to Harvest
60–80 (first harvest), then ongoing
🧪Fertilizer
High nitrogen — 15-0-15 or similar. Side-dress every 3–4 weeks for continuous production.
🌿Propagation
Direct seed or transplants

Companion Planting

🌱 Onion
Repels cabbage loopers and other brassica pests with its scent
🌱 Dill
Attracts parasitic wasps that prey on cabbageworms
🌱 Rosemary
Strong scent confuses cabbage moth butterflies looking for brassica hosts
🌱 Beet
Uses underground space while collards use vertical space

Pests & Diseases

pestCabbage Looper
Bt (Bacillus thuringiensis) spray is very effective. Inspect leaf undersides regularly. Row cover prevents egg-laying.
pestDiamondback Moth
Bt spray when larvae are small. Rotate brassica locations yearly. Avoid broad-spectrum pesticides that kill parasitic wasps.
pestAphids
Strong water spray to dislodge. Insecticidal soap. Encourage ladybugs and lacewings.
diseaseDowny Mildew
Improve air circulation. Water at the base, not overhead. Remove infected leaves promptly.

Florida Varieties

Georgia Southern
The traditional heirloom variety. Large, wavy leaves with classic flavor. Heat and cold tolerant.
Vates
Compact plant with smooth, dark green leaves. Slightly more cold-hardy. Good for smaller gardens.
Top Bunch
Upright growth habit that keeps leaves off the ground. Easy harvest and good air circulation.
Flash
Hybrid with excellent bolt resistance. Smooth leaves that are easy to clean. Consistent production.

Flavor Profile

Texture
Thick, sturdy leaves with chewy stems; tender when cooked
Best Eaten
Cooked

Nutrition Highlights

Health note: Collard greens provide more calcium per calorie than milk and are among the richest food sources of vitamin K, essential for blood clotting and bone metabolism. The combination of vitamins A, C, and K makes them one of the most nutrient-dense leafy greens available.

Culinary Uses

Traditional Southern preparation: slow-simmered with smoked ham hock, onions, and vinegar. Quick sautéed with garlic and olive oil. Raw in salads when thinly sliced and massaged with lemon juice. Used as grain-free wraps for sandwiches and burritos. Added to soups and stews. The cooking liquid ("pot likker") is traditionally served as a nutrient-rich broth.

Storage Tips

Wrap unwashed collards in damp paper towels and store in a plastic bag in the refrigerator for up to 1 week. For freezing, blanch in boiling water for 3 minutes, ice-bath immediately, squeeze out water, and freeze flat in bags. Frozen collards keep for 12 months and are nearly as good as fresh in cooked dishes.

💡 Fun Fact

Collard greens have been cultivated for over 2,000 years, making them one of the oldest members of the cabbage family. The tradition of eating collards on New Year's Day in the South (the green leaves represent money) is alive and well in Florida, where many families grow their own "New Year's greens" in the garden.