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Vegetable Full Sun Regular water

Radish

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

The fastest vegetable -- harvest in as little as 3 weeks. Hardy enough to withstand light frosts down to 2°C, radish performs best when daytime temperatures stay between 10°C and 18°C. 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 22-30 days. Popular with home gardeners for its reliable yields and straightforward growing requirements.

Harvest 22-30 days
Temp Range 2°C — 24°C
Frost Tolerant ❄

Quick Answer: How to Grow Radish

Radish takes 22-30 days to harvest. It grows best in 10–18°C with full sun and regular watering. Radish is frost tolerant and can handle temperatures down to 2°C. It can be grown in 350 cities worldwide.

Find the best time to plant Radish in your city →

Growing Requirements

☀️
Sun
Full Sun
💧
Water
Regular
❄️
Frost
Tolerant
📅
Harvest
22-30 days

Temperature Range

10-18°C
-10°C 45°C
Optimal: 10–18°C Tolerates: 2–24°C
Tropical suitable: No
Cities growing: 350 of 350

Growing Tips

💡

Expert Tips

Sow directly. Don't let soil dry out or roots will be pithy. 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: 2°C to 24°C
  • Optimal growing: 10°C to 18°C
  • Harvest in 22-30 days

Did You Know?

  • 🌱 Radish is frost-tolerant, meaning it can survive light frosts and even thrive in cooler temperatures.
  • 🌱 Radish needs at least 6-8 hours of direct sunlight daily for optimal growth.

Step-by-Step Growing Guide

Radish is the fastest vegetable in the garden, with some varieties ready in 22 days — making it perfect for teaching children, filling gaps between slower crops, and marking rows of slower-germinating seeds. Grow in any well-drained soil at pH 6.0–7.0; radishes tolerate poor soil but bolt in heat and become pithy in compacted ground. Sow directly 1cm deep in rows 15–20cm apart and thin to 5–8cm spacing — overcrowding is the most common reason radishes form no bulb. Sow in cool weather: spring or autumn, avoiding the heat of summer (above 24°C causes bolting and hollow, pithy roots). Succession-sow every 7–10 days for continuous harvest. Water consistently — 2.5cm per week — never letting soil dry out; drought causes the roots to become pithy, hot, and woody. No fertiliser is needed in reasonably fertile soil; excess nitrogen produces lush tops with tiny, all-leaf plants and no bulb.

Common Pests & Problems

Flea beetles (Phyllotreta spp.) create a shotgun pattern of tiny holes in leaves — use floating row covers as the most effective prevention; diatomaceous earth around seedlings provides some deterrent. Root maggots (Delia radicum) are the larvae of the cabbage fly, tunnelling into bulbs — use fine mesh covers and avoid growing near other brassicas. Hollow heart (pithy centres) is caused by irregular watering or leaving roots in the ground too long after maturity — water consistently and harvest promptly. Bolting is triggered by heat, water stress, or sowing too thickly — none of which produce edible radishes.

Harvest & Storage

Harvest spring radishes when the root shoulders (the top of the root) are 2–3cm in diameter — check by gently brushing soil away. Do not wait; radishes left even a few days past prime become pithy and over-hot. Twist off at soil level and remove foliage immediately (tops draw moisture from the root). Fresh radishes with tops removed last 1–2 weeks in a sealed plastic bag in the refrigerator. Radish greens are edible and nutritious — use as a salad green immediately as they wilt quickly.

Popular Varieties

Cherry Belle is the classic round, red, white-fleshed spring radish ready in 22–24 days — crisp, mild, and utterly reliable. French Breakfast is an elongated, red-and-white type with a milder flavour and particularly pretty appearance — harvest at 5–7cm before it becomes hot. Daikon (Japanese White) is a long (30–60cm), white radish used widely in Asian cuisine — slower growing at 50–60 days with a milder, more complex flavour and edible leaves. Watermelon radish is a slow-maturing (50–60 days) type with a white exterior and stunning magenta interior — striking in salads, mild and slightly sweet.

Companion Plants for Radish

✓ Good Companions

These plants grow well alongside Radish:

CarrotCucumberLettuceSpinach

✗ Avoid Planting Near

Keep these plants away from Radish:

Hyssop

Learn more about companion planting.

Where to Grow Radish

Radish can be grown in 350 cities across 7 regions worldwide

🌍

Europe

80 cities
🌏

Asia

79 cities
🌎

North America

78 cities
🌍

Africa

39 cities
🌎

South America

39 cities
🌊

Oceania

19 cities
🕌

Middle East

16 cities

🌍 Europe (80 cities)

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

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

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

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

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

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

City Level JanFebMarAprMayJunJulAugSepOctNovDec
Abu Dhabi, AE easy
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Amman, JO easy
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Baghdad, IQ easy
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Beirut, LB easy
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Doha, QA easy
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Dubai, AE easy
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Erbil, IQ easy
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Jeddah, SA easy
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Kuwait City, KW easy
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Manama, BH easy
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Muscat, OM easy
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Riyadh, SA easy
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Sana'a, YE easy
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Tabriz, IR easy
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Tehran, IR easy
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Tel Aviv, IL easy
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When should I plant radish in my city?

The best time to plant radish depends on your local climate zone. It thrives in temperatures between 10°C and 18°C. Since radish 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 radish in winter?

Yes, radish is frost tolerant and can handle temperatures down to 2°C. In many climates, it can be grown through winter with some protection.

Get Radish Seeds & Plants

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

Shop on Burpee Search on Amazon

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Similar Growing Requirements

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Vegetable · Partial Shade OK

5-18°C
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Kale

Vegetable · Full Sun to Partial Shade

5-20°C
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Rosemary

Herb · Full Sun

15-25°C
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Pea

Vegetable · Full Sun

8-18°C

Frequently Asked Questions about Radish

When should I plant radish?

The best time to plant radish depends on your local climate. Radish grows best in temperatures between 10°C and 18°C (can tolerate 2°C to 24°C). Radish 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 radish grow in tropical climates?

Radish is not well-suited for tropical climates. It prefers cooler conditions with temperatures between 10°C and 18°C. In tropical areas, it may bolt, fail to fruit, or suffer from heat stress. Consider growing it in cooler seasons or at higher elevations.

How long does radish take to grow?

Radish typically takes 22-30 days from planting to harvest. It requires full sun and regular watering. Sow directly. Don't let soil dry out or roots will be pithy. 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 Radish

See the planting calendar for Radish 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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