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Vegetable Full Sun Regular water

Sweet Corn

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

Garden-fresh corn is incredibly sweet. A warmth-loving plant that does best between 18°C and 30°C, sweet 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. Whether grown in raised beds, containers, or traditional plots, it produces well across a range of climates.

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

Quick Answer: How to Grow Sweet Corn

Sweet Corn takes 60-100 days to harvest. It grows best in 18–30°C with full sun and regular watering. Sweet 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 Sweet 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

Super-sweet varieties are sweetest. Eat within hours of picking for peak flavor. 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?

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

Step-by-Step Growing Guide

Sweet corn demands rich, well-drained soil with a pH of 6.0–6.8 and high nitrogen fertility. Till in 10 cm of compost and a balanced starter fertilizer before planting. Sow seeds 2.5 cm deep and 25–30 cm apart in rows spaced 75–90 cm apart. Critically, plant in blocks of at least 4 rows rather than single rows to ensure adequate wind pollination — poor pollination causes missing kernels. Direct sow only after soil temperature reaches 16°C minimum. Water consistently at 25–30 mm per week, especially critical during tasseling and ear fill — moisture stress at silking directly causes poor kernel set. Side-dress with high-nitrogen fertilizer (ammonium sulfate or blood meal) when plants reach knee height and again when tassels emerge. Avoid wetting the foliage; drip irrigation is ideal. Succession plant every 2 weeks for continuous harvest.

Common Pests & Problems

Corn earworm (Helicoverpa zea) is the primary pest — the caterpillar enters through the silk and feeds on developing kernels. Apply a dropperful of mineral oil to the silk 3–5 days after silk emergence to suffocate larvae. Corn smut (Ustilago maydis) appears as swollen silver-grey galls on ears and stalks; remove and destroy galls before they rupture and spread spores — do not compost. European corn borer tunnels into stalks causing lodging; Bt spray applied at silking and again 5 days later provides good organic control. Raccoons and birds are significant problems as ears ripen; use physical barriers or electric fencing in problem areas.

Harvest & Storage

Harvest sweet corn when the silks have turned dark brown and dry, and a thumbnail pressed into a kernel produces a milky white juice — watery means too early, doughy means too late. Pull ears downward with a sharp twist. Sugar conversion to starch begins within minutes of harvest in standard varieties; super-sweet (sh2) types hold sweetness longer but still taste best within 2 hours. Refrigerate unhusked ears immediately if not eating right away; standard varieties decline noticeably after 24 hours. Blanch and freeze within a day of harvest for the best preserved flavour.

Popular Varieties

Honey Select is a triple-sweet hybrid combining the tender texture of su types with the prolonged sweetness of sh2, earning top marks in taste trials. Silver Queen is a classic white su variety beloved for its tender white kernels and milky sweetness, performing best in the heat of Southern summers. Peaches and Cream is a bicolour su/se type with yellow and white kernels and excellent disease resistance. Incredible F1 is an early-maturing yellow se variety with excellent husk protection against earworm and outstanding flavour that holds well for a day or two post-harvest.

Companion Plants for Sweet Corn

✓ Good Companions

These plants grow well alongside Sweet Corn:

BeanCucumberPumpkinSquash

✗ Avoid Planting Near

Keep these plants away from Sweet Corn:

TomatoCelery

Learn more about companion planting.

Where to Grow Sweet Corn

Sweet Corn 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 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 sweet corn in my city?

The best time to plant sweet 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 sweet corn in winter?

Sweet 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 Sweet Corn Seeds & Plants

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

Shop on Burpee Search on Amazon

People Also Search For

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Cucumber

Vegetable · Full Sun

20-30°C
🥬

Zucchini

Vegetable · Full Sun

18-27°C

Frequently Asked Questions about Sweet Corn

When should I plant sweet corn?

The best time to plant sweet corn depends on your local climate. Sweet Corn grows best in temperatures between 18°C and 30°C (can tolerate 10°C to 35°C). Sweet 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 sweet corn grow in tropical climates?

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

How long does sweet corn take to grow?

Sweet Corn typically takes 60-100 days from planting to harvest. It requires full sun and regular watering. Super-sweet varieties are sweetest. Eat within hours of picking for peak flavor. 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 Sweet Corn

See the planting calendar for Sweet 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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