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Vegetable Full Sun Regular water

Corn

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

Plant in blocks (not rows) for wind pollination. A warmth-loving plant that does best between 18°C and 30°C, corn adapts well to tropical and subtropical conditions but cannot tolerate frost. 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 60-100 days. An excellent choice for beginner and experienced gardeners alike, thanks to its forgiving growing habits.

Harvest 60-100 days
Temp Range 10°C — 35°C

Quick Answer: How to Grow Corn

Corn takes 60-100 days to harvest. It grows best in 18–30°C with full sun and regular watering. Corn is not frost tolerant — wait until after the last frost to plant. It can be grown in 350 cities worldwide.

Find the best time to plant Corn in your city →

Growing Requirements

☀️
Sun
Full Sun
💧
Water
Regular
❄️
Frost
Sensitive
📅
Harvest
60-100 days

Temperature Range

18-30°C
-10°C 45°C
Optimal: 18–30°C Tolerates: 10–35°C
Tropical suitable: Yes
Cities growing: 350 of 350

Growing Tips

💡

Expert Tips

Minimum 4x4 block for pollination. Heavy feeder -- needs nitrogen-rich soil. Wait until soil warms to at least 18°C before transplanting outdoors — cold soil stunts growth and can invite root rot. 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: 10°C to 35°C
  • Optimal growing: 18°C to 30°C
  • Harvest in 60-100 days

Did You Know?

  • 🌱 Corn loves the heat! It thrives in tropical and subtropical climates year-round.
  • 🌱 Corn needs at least 6-8 hours of direct sunlight daily for optimal growth.

Step-by-Step Growing Guide

Corn is wind-pollinated, which dictates the fundamental rule of corn growing: never plant in a single row. Plant in blocks of at least 4 rows x 4 plants (minimum 16 plants) or pollination will be poor, resulting in gappy, partially filled ears. Grow in deep, fertile, well-drained soil at pH 6.0–6.8. Incorporate 8–10cm of compost and a nitrogen-rich fertiliser (21-0-0) at 200g per square metre before sowing. Sow seeds 4cm deep and 30cm apart in rows 75–90cm apart once soil temperature reaches 18°C. Corn is a rapid, prodigious feeder — side-dress with ammonium nitrate (100g per linear metre of row) when plants are 30cm tall and again when tassels appear. Water deeply and consistently — 2.5–4cm per week — and critically never allow drought stress during silking and tasselling or pollination will fail. Mulch to conserve moisture.

Common Pests & Problems

Corn earworm (Helicoverpa zea) is the most damaging pest — larvae enter through the silk and destroy kernels at the tip of the ear. Apply a drop of mineral oil to the silk channel 3 days after silks appear; beneficial nematodes in soil reduce larval populations. Smut (Ustilago maydis) produces grotesque silver-grey galls that burst to release black powder — pull and dispose of galls before they burst; the galls are edible (considered a delicacy in Mexico as huitlacoche) but remove for crop protection. Corn borer (Ostrinia nubilalis) tunnels into stalks and ears — apply Bt spray when silks first appear and repeat weekly.

Harvest & Storage

Sweet corn enters its peak harvest window 17–24 days after silks first appear. Test by pulling back the husk at the ear tip — kernels should be plump and milky white juice should squirt when a kernel is pierced. The silk should be brown and dry. Twist ears downward and snap off in a single motion. Corn converts sugar to starch within hours of harvest — cook, eat, or process within 2–4 hours for peak sweetness. Blanch and freeze surplus within 4 hours of picking for up to 12 months. Store unhusked at 0–2°C for no more than 3 days.

Popular Varieties

Bodacious is a yellow, supersweet hybrid with exceptionally tender, sweet kernels and a long harvest window — one of the most popular home garden varieties. Silver Queen is a white, tender-sweet variety with a sweet, rich flavour and 14–16 rows per ear — the classic white corn benchmark. Incredible is a bicolour (yellow and white) supersweet hybrid producing large ears with outstanding flavour and strong disease resistance. Glass Gem is an ornamental flint corn with dazzling multi-coloured kernels — not sweet corn but a visually extraordinary variety for popcorn and decoration.

Companion Plants for Corn

✓ Good Companions

These plants grow well alongside Corn:

BeanCucumberPumpkinSquash

✗ Avoid Planting Near

Keep these plants away from Corn:

TomatoCelery

Learn more about companion planting.

Where to Grow Corn

Corn can be grown in 350 cities across 7 regions worldwide

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Europe

80 cities
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Asia

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

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

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

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

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

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

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

The best time to plant corn depends on your local climate zone. It thrives in temperatures between 18°C and 30°C. Wait until after the last frost in your area. Check your city's planting calendar on GrowByCity for exact dates.

Can I grow corn in winter?

Corn is not frost tolerant and cannot survive winter outdoors in most temperate climates. In tropical areas (USDA Zones 10+), it may grow year-round.

Get Corn Seeds & Plants

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

Shop on Burpee Search on Amazon

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Cucumber

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Zucchini

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Frequently Asked Questions about Corn

When should I plant corn?

The best time to plant corn depends on your local climate. Corn grows best in temperatures between 18°C and 30°C (can tolerate 10°C to 35°C). Corn is not frost tolerant, so wait until after the last frost in your area. Check your city's planting calendar on GrowByCity for exact planting months.

Can corn grow in tropical climates?

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

How long does corn take to grow?

Corn typically takes 60-100 days from planting to harvest. It requires full sun and regular watering. Minimum 4x4 block for pollination. Heavy feeder -- needs nitrogen-rich soil. Wait until soil warms to at least 18°C before transplanting outdoors — cold soil stunts growth and can invite root rot. 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 Corn

See the planting calendar for Corn 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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