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Vegetable Full Sun Regular water

Collard Greens

Written by the GrowByCity Editorial Team · Updated April 2026
2 min read

Southern staple green that handles both heat and cold better than most brassicas. Remarkably adaptable, collard greens tolerates temperatures from -5°C to 30°C and thrives in both cool-temperate and tropical gardens. Give it full sun (6-8 hours of direct light daily) and regular watering to keep soil consistently moist, and expect to harvest in roughly 55-75 days. Whether grown in raised beds, containers, or traditional plots, it produces well across a range of climates.

Harvest 55-75 days
Temp Range -5°C — 30°C
Frost Tolerant ❄

Quick Answer: How to Grow Collard Greens

Collard Greens takes 55-75 days to harvest. It grows best in 10–24°C with full sun and regular watering. Collard Greens is frost tolerant and can handle temperatures down to -5°C. It can be grown in 350 cities worldwide.

Find the best time to plant Collard Greens in your city →

Growing Requirements

☀️
Sun
Full Sun
💧
Water
Regular
❄️
Frost
Tolerant
📅
Harvest
55-75 days

Temperature Range

10-24°C
-10°C 45°C
Optimal: 10–24°C Tolerates: -5–30°C
Tropical suitable: Yes
Cities growing: 350 of 350

Growing Tips

💡

Expert Tips

Harvest lower leaves first. Flavor improves after light frost. Can be planted 2-3 weeks before the last expected frost, giving it a head start on the growing season. Aim for about 2.5 cm of water per week, adjusting for rainfall. Organic mulch around the base helps maintain even moisture.

Quick Facts

  • Grows in 350 of 350 cities
  • Available in 7 regions worldwide
  • Temperature range: -5°C to 30°C
  • Optimal growing: 10°C to 24°C
  • Harvest in 55-75 days

Did You Know?

  • 🌱 Collard Greens is frost-tolerant, meaning it can survive light frosts and even thrive in cooler temperatures.
  • 🌱 Collard Greens loves the heat! It thrives in tropical and subtropical climates year-round.
  • 🌱 Collard Greens needs at least 6-8 hours of direct sunlight daily for optimal growth.

Step-by-Step Growing Guide

Collard greens are the most heat and cold tolerant member of the brassica family — they survive temperatures from -12°C to 35°C, making them a nearly year-round crop in most climates. They grow best at 16–24°C in fertile, well-drained soil at pH 6.0–7.5. Incorporate 8cm of compost and 150g per square metre of balanced fertiliser before transplanting. Space plants 45–60cm apart in rows 60–75cm apart. Start seeds indoors 4–6 weeks before transplanting, or direct-sow 1cm deep. Water consistently — 2.5–3.5cm per week — and never allow soil to dry completely. Feed with nitrogen-rich liquid fertiliser every 3–4 weeks to support continuous leaf production through the season. Unlike broccoli, collards do not head up — they produce a tall, tree-like plant with a crown of large, waxy, grey-green leaves. Harvest lower leaves first, always working from the bottom up, which allows the plant to keep producing from the centre for a full season.

Common Pests & Problems

Cabbage white caterpillars (Pieris rapae) consume collard leaves rapidly — apply Bt spray to both leaf surfaces every 7 days from the moment caterpillars are spotted; row covers prevent egg-laying. Harlequin bug (Murgantia histrionica) is a striking orange-and-black stink bug that sucks sap, causing white or yellow leaf patches — handpick in the morning, destroy egg masses, and plant trap crops of mustard nearby. Aphids cluster on growing tips — blast with water jets and apply insecticidal soap; reflective mulch deters colonisation.

Harvest & Storage

Harvest the lower, larger leaves first when they are 20–30cm long — pull the leaf blade downward and outward to snap cleanly from the main stem. Leave the top third of the plant intact at all times to continue growth. Harvest before leaves become yellowed or spotted. After light frost, collard flavour dramatically improves as bitterness diminishes and sweetness increases — plan harvest around frost events in autumn. Fresh collards store 5–7 days refrigerated in a damp cloth. Blanch and freeze for up to 12 months.

Popular Varieties

Vates is the classic home garden collard — compact, blue-green, cold-hardy, and exceptionally reliable. Georgia Southern is a traditional, tall, open-headed variety with large, wavy-edged leaves and long production from a single planting. Flash is a modern hybrid with improved bolt resistance, vigorous growth, and excellent disease resistance — suitable for both spring and fall production. Champion is a compact, uniform collard with smooth, dark-blue-green leaves and outstanding cold hardiness — one of the best for northern climates.

Where to Grow Collard Greens

Collard Greens can be grown in 350 cities across 7 regions worldwide

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Europe

80 cities
🌏

Asia

79 cities
🌎

North America

78 cities
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Africa

39 cities
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South America

39 cities
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Oceania

19 cities
🕌

Middle East

16 cities

🌍 Europe (80 cities)

City Level JanFebMarAprMayJunJulAugSepOctNovDec
Aarhus, DK medium
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Amsterdam, NL medium
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Ankara, TR medium
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Antalya, TR medium
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Athens, GR medium
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Barcelona, ES medium
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Bari, IT medium
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Belgrade, RS medium
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Bergen, NO medium
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Berlin, DE medium
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Bilbao, ES medium
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Bologna, IT medium
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Bordeaux, FR medium
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Bratislava, SK medium
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Brussels, BE medium
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Bucharest, RO medium
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Budapest, HU medium
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Catania, IT medium
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Cologne, DE medium
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Copenhagen, DK medium
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Corfu, GR medium
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Cork, IE medium
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Dublin, IE medium
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Dubrovnik, HR medium
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Edinburgh, GB medium
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Florence, IT medium
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Frankfurt, DE medium
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Gdansk, PL medium
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Genoa, IT medium
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Glasgow, GB medium
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Gothenburg, SE medium
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Hamburg, DE medium
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Helsinki, FI medium
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Heraklion, GR medium
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Istanbul, TR medium
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Izmir, TR medium
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Krakow, PL medium
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Kyiv, UA medium
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Limassol, CY medium
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Lisbon, PT medium
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Ljubljana, SI medium
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London, GB medium
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Lyon, FR medium
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Madrid, ES medium
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Malaga, ES medium
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Marseille, FR medium
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Milan, IT medium
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Munich, DE medium
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Naples, IT medium
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Nice, FR medium
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Nicosia, CY medium
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Oslo, NO medium
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Palermo, IT medium
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Paris, FR medium
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Porto, PT medium
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Poznan, PL medium
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Prague, CZ medium
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Reykjavik, IS medium
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Riga, LV medium
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Rome, IT medium
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Seville, ES medium
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Sofia, BG medium
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Split, HR medium
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Stockholm, SE medium
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Strasbourg, FR medium
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Stuttgart, DE medium
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Tallinn, EE medium
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Thessaloniki, GR medium
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Tirana, AL medium
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Toulouse, FR medium
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Turin, IT medium
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Turku, FI medium
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Valencia, ES medium
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Valletta, MT medium
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Verona, IT medium
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Vienna, AT medium
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Vilnius, LT medium
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Warsaw, PL medium
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Zagreb, HR medium
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Zurich, CH medium
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🌏 Asia (79 cities)

City Level JanFebMarAprMayJunJulAugSepOctNovDec
Ahmedabad, IN medium
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Almaty, KZ medium
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Bali, ID medium
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Bandung, ID medium
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Bangalore, IN medium
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Bangkok, TH medium
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Beijing, CN medium
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Busan, KR medium
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Cebu, PH medium
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Chandigarh, IN medium
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Chengdu, CN medium
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Chennai, IN medium
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Chiang Mai, TH medium
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Chittagong, BD medium
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Chongqing, CN medium
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Coimbatore, IN medium
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Colombo, LK medium
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Da Nang, VN medium
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Dalian, CN medium
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Davao, PH medium
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Delhi, IN medium
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Dhaka, BD medium
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Dharan, NP medium
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Fukuoka, JP medium
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Galle, LK medium
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Guangzhou, CN medium
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Hangzhou, CN medium
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Hanoi, VN medium
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Harbin, CN medium
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Ho Chi Minh City, VN medium
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Hong Kong, HK medium
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Hyderabad, IN medium
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Incheon, KR medium
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Indore, IN medium
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Islamabad, PK medium
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Jaipur, IN medium
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Jakarta, ID medium
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Jeju, KR medium
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Johor Bahru, MY medium
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Karachi, PK medium
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Kathmandu, NP medium
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Kochi, IN medium
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Kolkata, IN medium
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Kuala Lumpur, MY medium
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Kunming, CN medium
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Kyoto, JP medium
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Lahore, PK medium
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Lucknow, IN medium
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Manila, PH medium
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Mumbai, IN medium
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Nagoya, JP medium
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Nanjing, CN medium
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Nha Trang, VN medium
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Okinawa, JP medium
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Osaka, JP medium
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Pattaya, TH medium
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Penang, MY medium
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Phnom Penh, KH medium
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Pune, IN medium
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Sapporo, JP medium
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Seoul, KR medium
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Shanghai, CN medium
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Shenzhen, CN medium
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Siem Reap, KH medium
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Singapore, SG medium
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Surabaya, ID medium
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Surat, IN medium
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Taipei, TW medium
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Tashkent, UZ medium
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Tbilisi, GE medium
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Tokyo, JP medium
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Ulaanbaatar, MN medium
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Varanasi, IN medium
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Vientiane, LA medium
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Visakhapatnam, IN medium
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Wuhan, CN medium
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Xi'an, CN medium
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Xiamen, CN medium
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Yangon, MM medium
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🌎 North America (78 cities)

City Level JanFebMarAprMayJunJulAugSepOctNovDec
Albuquerque, US medium
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Anchorage, US medium
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Atlanta, US medium
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Austin, US medium
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Baltimore, US medium
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Baton Rouge, US medium
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Boise, US medium
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Boston, US medium
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Bridgetown, BB medium
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Buffalo, US medium
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Calgary, CA medium
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Cancun, MX medium
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Charleston, US medium
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Charlotte, US medium
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Chattanooga, US medium
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Chicago, US medium
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Denver, US medium
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Des Moines, US medium
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Detroit, US medium
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Edmonton, CA medium
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El Paso, US medium
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Fargo, US medium
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Fresno, US medium
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Guadalajara, MX medium
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Halifax, CA medium
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Hartford, US medium
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Havana, CU medium
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Honolulu, US medium
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Houston, US medium
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Jacksonville, US medium
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Kansas City, US medium
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Kingston, JM medium
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Knoxville, US medium
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Las Vegas, US medium
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Little Rock, US medium
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Los Angeles, US medium
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Louisville, US medium
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Lubbock, US medium
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Madison, US medium
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Memphis, US medium
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Mexico City, MX medium
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Miami, US medium
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Milwaukee, US medium
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Minneapolis, US medium
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Monterrey, MX medium
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Montreal, CA medium
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Nashville, US medium
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New Orleans, US medium
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New York, US medium
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Oaxaca, MX medium
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Oklahoma City, US medium
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Omaha, US medium
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Ottawa, CA medium
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Panama City, PA medium
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Phoenix, US medium
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Pittsburgh, US medium
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Portland, US medium
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Puebla, MX medium
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Quebec City, CA medium
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Raleigh, US medium
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Richmond, US medium
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Sacramento, US medium
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Salt Lake City, US medium
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San Diego, US medium
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San Francisco, US medium
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San Jose, CR medium
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Santo Domingo, DO medium
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Saskatoon, CA medium
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Savannah, US medium
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Seattle, US medium
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Spokane, US medium
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St. Louis, US medium
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Tampa, US medium
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Toronto, CA medium
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Tucson, US medium
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Vancouver, CA medium
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Victoria, CA medium
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Winnipeg, CA medium
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🌍 Africa (39 cities)

City Level JanFebMarAprMayJunJulAugSepOctNovDec
Abidjan, CI medium
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Accra, GH medium
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Addis Ababa, ET medium
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Algiers, DZ medium
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Antananarivo, MG medium
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Arusha, TZ medium
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Bamako, ML medium
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Bloemfontein, ZA medium
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Cairo, EG medium
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Cape Town, ZA medium
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Casablanca, MA medium
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Dakar, SN medium
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Dar es Salaam, TZ medium
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Douala, CM medium
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Durban, ZA medium
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Entebbe, UG medium
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Fez, MA medium
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Freetown, SL medium
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Harare, ZW medium
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Johannesburg, ZA medium
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Kampala, UG medium
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Kigali, RW medium
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Kinshasa, CD medium
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Lagos, NG medium
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Libreville, GA medium
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Lilongwe, MW medium
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Lome, TG medium
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Luanda, AO medium
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Lusaka, ZM medium
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Maputo, MZ medium
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Marrakech, MA medium
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Mombasa, KE medium
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Nairobi, KE medium
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Ouagadougou, BF medium
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Port Louis, MU medium
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Pretoria, ZA medium
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Tunis, TN medium
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Windhoek, NA medium
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Zanzibar, TZ medium
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🌎 South America (39 cities)

City Level JanFebMarAprMayJunJulAugSepOctNovDec
Arequipa, PE medium
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Asuncion, PY medium
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Barranquilla, CO medium
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Belem, BR medium
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Bogota, CO medium
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Brasilia, BR medium
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Buenos Aires, AR medium
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Cali, CO medium
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Campinas, BR medium
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Caracas, VE medium
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Cartagena, CO medium
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Concepcion, CL medium
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Cordoba, AR medium
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Curitiba, BR medium
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Cusco, PE medium
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Fortaleza, BR medium
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Georgetown, GY medium
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Goiania, BR medium
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Guayaquil, EC medium
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La Paz, BO medium
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Lima, PE medium
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Manaus, BR medium
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Medellin, CO medium
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Mendoza, AR medium
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Montevideo, UY medium
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Paramaribo, SR medium
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Port of Spain, TT medium
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Porto Alegre, BR medium
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Quito, EC medium
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Recife, BR medium
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Rio de Janeiro, BR medium
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Rosario, AR medium
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Salvador, BR medium
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Santa Cruz, BO medium
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Santiago, CL medium
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Sao Paulo, BR medium
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Sucre, BO medium
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Trujillo, PE medium
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Valparaiso, CL medium
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🌊 Oceania (19 cities)

City Level JanFebMarAprMayJunJulAugSepOctNovDec
Adelaide, AU medium
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Alice Springs, AU medium
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Auckland, NZ medium
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Brisbane, AU medium
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Cairns, AU medium
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Canberra, AU medium
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Christchurch, NZ medium
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Darwin, AU medium
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Dunedin, NZ medium
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Gold Coast, AU medium
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Hamilton, NZ medium
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Hobart, AU medium
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Melbourne, AU medium
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Noumea, NC medium
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Perth, AU medium
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Suva, FJ medium
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Sydney, AU medium
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Townsville, AU medium
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Wellington, NZ medium
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🕌 Middle East (16 cities)

City Level JanFebMarAprMayJunJulAugSepOctNovDec
Abu Dhabi, AE medium
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Amman, JO medium
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Baghdad, IQ medium
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Beirut, LB medium
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Doha, QA medium
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Dubai, AE medium
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Erbil, IQ medium
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Jeddah, SA medium
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Kuwait City, KW medium
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Manama, BH medium
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Muscat, OM medium
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Riyadh, SA medium
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Sana'a, YE medium
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Tabriz, IR medium
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Tehran, IR medium
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Tel Aviv, IL medium
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✓

When should I plant collard greens in my city?

The best time to plant collard greens depends on your local climate zone. It thrives in temperatures between 10°C and 24°C. Since collard greens is frost tolerant, you can plant it before the last frost date. Check your city's planting calendar on GrowByCity for exact dates.

Can I grow collard greens in winter?

Yes, collard greens is frost tolerant and can handle temperatures down to -5°C. In many climates, it can be grown through winter with some protection.

Get Collard Greens Seeds & Plants

Ready to start growing? Find Collard Greens seeds and starter plants online.

Shop on Burpee Search on Amazon

People Also Search For

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Similar Growing Requirements

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Vegetable · Partial Shade OK

10-20°C
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Carrot

Vegetable · Full Sun

15-24°C
🥬

Zucchini

Vegetable · Full Sun

18-27°C
🥬

Spinach

Vegetable · Partial Shade OK

5-18°C
🥬

Kale

Vegetable · Full Sun to Partial Shade

5-20°C

Frequently Asked Questions about Collard Greens

When should I plant collard greens?

The best time to plant collard greens depends on your local climate. Collard Greens grows best in temperatures between 10°C and 24°C (can tolerate -5°C to 30°C). Collard Greens is frost tolerant, so it can be planted earlier in spring or later in fall. Check your city's planting calendar on GrowByCity for exact planting months.

Can collard greens grow in tropical climates?

Yes! Collard Greens can grow in tropical climates. It's successfully grown in tropical cities like Abidjan, Abu Dhabi, Accra. Collard Greens requires full sun and regular watering.

How long does collard greens take to grow?

Collard Greens typically takes 55-75 days from planting to harvest. It requires full sun and regular watering. Harvest lower leaves first. Flavor improves after light frost. Can be planted 2-3 weeks before the last expected frost, giving it a head start on the growing season. Aim for about 2.5 cm of water per week, adjusting for rainfall. Organic mulch around the base helps maintain even moisture.

Find the Best Time to Plant Collard Greens

See the planting calendar for Collard Greens in these popular cities:

London, GBMumbai, INNew York, USParis, FRSingapore, SGSydney, AUTokyo, JPToronto, CA

Last updated: March 2026 · Climate data from NOAA, FAO, USDA

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