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Spice Partial Shade OK Frequent water

Wasabi

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

Notoriously difficult to grow Japanese condiment. Best suited for moderate climates, wasabi grows optimally between 10°C and 18°C and can handle temperatures from 5°C to 22°C. It needs partial shade, though it appreciates some direct light and frequent watering — it is a thirsty plant that dislikes dry soil — leaves are ready for picking in about 545-730 days. Perfect for container gardens and small spaces — just place it where it gets adequate light and harvest as needed.

Harvest 545-730 days
Temp Range 5°C — 22°C

Quick Answer: How to Grow Wasabi

Wasabi takes 545-730 days to harvest. It grows best in 10–18°C with partial shade ok and frequent watering. Wasabi 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 Wasabi in your city →

Growing Requirements

☀️
Sun
Partial Shade OK
💧
Water
Frequent
❄️
Frost
Sensitive
📅
Harvest
545-730 days

Temperature Range

10-18°C
-10°C 45°C
Optimal: 10–18°C Tolerates: 5–22°C
Tropical suitable: No
Cities growing: 350 of 350

Growing Tips

💡

Expert Tips

One of the hardest plants to grow. Needs cool stream or constantly moist shade. Wait until soil warms to at least 10°C before transplanting outdoors — cold soil stunts growth and can invite root rot. Consistent moisture is critical. Mulch with straw or compost to retain soil moisture and keep roots cool during hot weather.

Quick Facts

  • Grows in 350 of 350 cities
  • Available in 7 regions worldwide
  • Temperature range: 5°C to 22°C
  • Optimal growing: 10°C to 18°C
  • Harvest in 545-730 days

Step-by-Step Growing Guide

Wasabi (Wasabia japonica) is among the most demanding culinary plants to cultivate. It requires consistently cool temperatures of 8–20°C, high humidity, and constant access to clean, cold, moving water or reliably moist shade. Soil must be rich in organic matter with a pH of 6.0–7.0, extremely well-draining yet permanently moist — a contradiction achieved best in natural stream margins or by constructing a gravel-bed channel with gentle water flow. In garden cultivation without a stream, recreate conditions by planting in deep shade, mulching heavily with leaf mould, and misting daily. Space plants 30 cm apart. Feed very lightly with a balanced liquid fertiliser monthly — overfeeding produces excessive leaf growth at the expense of rhizome development. The rhizome takes 18–24 months to reach harvestable size. Protect from temperatures above 22°C as heat causes immediate decline.

Common Pests & Problems

Clubroot (Plasmodiophora brassicae) infects wasabi roots since it is a brassica relative, causing swollen, distorted roots and stunted plants; raise soil pH to 7.2 and use only disease-free transplants. Diamond-back moth larvae (Plutella xylostella) skeletonise leaves in warmer months; apply Bt spray targeting young caterpillars. Downy mildew (Peronospora wasabiae) appears as yellow patches on upper leaf surfaces with grey-purple mould beneath in humid, cool conditions; improve airflow, avoid leaf wetness, and apply copper hydroxide fungicide. Slugs are a constant problem in the moist, shaded conditions wasabi requires; use copper tape around containers and iron phosphate slug pellets. Root aphids can cause sudden wilting; flush with water and apply beneficial nematodes.

Harvest & Storage

The rhizome is ready after 18–24 months when it reaches 10–15 cm in length and 2–3 cm in diameter. Harvest by pulling the entire plant and twisting off the rhizome from the leaf stems. The rhizome's volatile compounds — the compounds responsible for the sinus-clearing heat — begin to dissipate immediately on grating, so grate only what is needed immediately before serving using a traditional sharkskin grater for finest texture. Unprocessed rhizomes stored in damp paper towels in the refrigerator keep for 2–4 weeks. Leaves and stems are also edible — use in salads or pickle them.

Popular Varieties

Mazuma is the most widely cultivated commercial variety, producing consistently sized rhizomes with a clean, balanced heat and sweet green notes. Daruma is a cold-hardier selection better suited to stream-side cultivation in cooler climates, with a slightly milder, more herbaceous flavour. Carolina Wasabi is a cultivar developed for garden-bed cultivation in North America with greater tolerance for non-stream conditions, though flavour quality is slightly less complex than Japanese-grown types. Zuma is a newer variety with vigorous growth and improved disease resistance to clubroot, increasingly preferred by small-scale specialty growers.

Where to Grow Wasabi

Wasabi can be grown in 350 cities across 7 regions worldwide

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Europe

80 cities
🌏

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
🌊

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
✓
✓
✓
✓
Caracas, VE hard
✓
✓
✓
✓
Cartagena, CO hard
✓
✓
✓
✓
Concepcion, CL hard
✓
✓
✓
✓
Cordoba, AR hard
✓
✓
✓
✓
Curitiba, BR hard
✓
✓
✓
✓
Cusco, PE hard
✓
✓
✓
✓
Fortaleza, BR hard
✓
✓
✓
✓
Georgetown, GY hard
✓
✓
✓
✓
Goiania, BR hard
✓
✓
✓
✓
Guayaquil, EC hard
✓
✓
✓
✓
La Paz, BO hard
✓
✓
✓
✓
Lima, PE hard
✓
✓
✓
✓
Manaus, BR hard
✓
✓
✓
✓
Medellin, CO hard
✓
✓
✓
✓
Mendoza, AR hard
✓
✓
✓
✓
Montevideo, UY hard
✓
✓
✓
✓
Paramaribo, SR hard
✓
✓
✓
✓
Port of Spain, TT hard
✓
✓
✓
✓
Porto Alegre, BR hard
✓
✓
✓
✓
Quito, EC hard
✓
✓
✓
✓
Recife, BR hard
✓
✓
✓
✓
Rio de Janeiro, BR hard
✓
✓
✓
✓
Rosario, AR hard
✓
✓
✓
✓
Salvador, BR hard
✓
✓
✓
✓
Santa Cruz, BO hard
✓
✓
✓
✓
Santiago, CL hard
✓
✓
✓
✓
Sao Paulo, BR hard
✓
✓
✓
✓
Sucre, BO hard
✓
✓
✓
✓
Trujillo, PE hard
✓
✓
✓
✓
Valparaiso, CL hard
✓
✓
✓
✓

🌊 Oceania (19 cities)

City Level JanFebMarAprMayJunJulAugSepOctNovDec
Adelaide, AU hard
✓
✓
✓
✓
Alice Springs, AU hard
✓
✓
✓
✓
Auckland, NZ hard
✓
✓
✓
✓
Brisbane, AU hard
✓
✓
✓
✓
Cairns, AU hard
✓
✓
✓
✓
Canberra, AU hard
✓
✓
✓
Christchurch, NZ hard
✓
✓
✓
✓
Darwin, AU hard
✓
✓
✓
✓
Dunedin, NZ hard
✓
✓
✓
Gold Coast, AU hard
✓
✓
✓
✓
Hamilton, NZ hard
✓
✓
✓
✓
Hobart, AU hard
✓
✓
✓
✓
Melbourne, AU hard
✓
✓
✓
✓
Noumea, NC hard
✓
✓
✓
✓
Perth, AU hard
✓
✓
✓
✓
Suva, FJ hard
✓
✓
✓
✓
Sydney, AU hard
✓
✓
✓
✓
Townsville, AU hard
✓
✓
✓
✓
Wellington, NZ hard
✓
✓
✓
✓

🕌 Middle East (16 cities)

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

When should I plant wasabi in my city?

The best time to plant wasabi depends on your local climate zone. It thrives in temperatures between 10°C and 18°C. Wait until after the last frost in your area. Check your city's planting calendar on GrowByCity for exact dates.

Can I grow wasabi in winter?

Wasabi 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 Wasabi Seeds & Plants

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

Shop on Burpee Search on Amazon

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Frequently Asked Questions about Wasabi

When should I plant wasabi?

The best time to plant wasabi depends on your local climate. Wasabi grows best in temperatures between 10°C and 18°C (can tolerate 5°C to 22°C). Wasabi 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 wasabi grow in tropical climates?

Wasabi 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 wasabi take to grow?

Wasabi typically takes 545-730 days from planting to harvest. It requires partial shade ok and frequent watering. One of the hardest plants to grow. Needs cool stream or constantly moist shade. Wait until soil warms to at least 10°C before transplanting outdoors — cold soil stunts growth and can invite root rot. Consistent moisture is critical. Mulch with straw or compost to retain soil moisture and keep roots cool during hot weather.

Find the Best Time to Plant Wasabi

See the planting calendar for Wasabi 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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