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Growing Tokyo Long White in Zone 13a

Allium cepa

✓ Well Suited for Zone 13a
Score: 100/100

🌡️ USDA Hardiness Zone 13a

Tropical

USDA 2023 Verified
Growing Season
365-365 days
Winter Minimum
60°F to 65°F
(15.6°C to 18.3°C)
AHS Heat Zone 12-12
More than 210 heat days per year • Extreme heat stress

Typical regions: Hawaii, Puerto Rico, US territories

📊 Data Source:
USDA Plant Hardiness Zone Map 2023 • Last verified: 1/22/2026

✓ Zone Compatibility Analysis

high confidence

Excellent match: 70 days to maturity with 295 days buffer in 365-day season.

Recommendation: Direct sowing and transplanting both viable. Excellent fit for this zone.

💾 Suitability computed by Solara Agricultural Intelligence Platform

📅 Zone 13a Planting Calendar for Tokyo Long White

🌱 Start Seeds Indoors
March 12
✓ Database-computed optimal date
🪴 Transplant Outdoors
April 30
✓ Database-computed optimal date
🌾 Direct Sow (Alternative)
2 weeks after last frost
For warm-season crops
🥕 Expected Harvest
July 9

💡 Zone 13a Growing Tips

  • • Growing season: 365-365 frost-free days
  • • Excellent match for this zone - both direct sowing and transplanting work well
  • • Monitor soil temperature before transplanting (minimum 55-60°F for most crops)

⚠️ Zone 13a Challenges

⚠️Tropical storms
⚠️High humidity
⚠️Tropical pests

✅ Best Plants for Zone 13a

✓All tropical plants
✓Rare tropical fruits
✓Tropical hardwoods

❄️ Winter in Zone 13a

Warm year-round. Minimum temperatures 60°F-65°F.

☀️ Summer in Zone 13a

Warm, humid year-round. Continuous growing season.

🔥 Heat Management for AHS Zone 12-12

This zone experiences more than 210 heat days per year with extreme heat stress.

🌡️Tropical varieties only
🌡️Constant irrigation
🌡️Shade essential
🌡️Heat-adapted cultivars required

Source: American Horticultural Society

📊 Tokyo Long White Quick Facts

Days to Maturity
60-80
Difficulty
intermediate
Season
summer
Type
OP

📍 View Tokyo Long White Guide for Other Zones

Zone 1aZone 1bZone 2aZone 2bZone 3aZone 3bZone 4aZone 4bZone 5aZone 5bZone 6aZone 6bZone 7aZone 7bZone 8aZone 8bZone 9aZone 9bZone 10aZone 10bZone 11aZone 11bZone 12aZone 12bZone 13aZone 13b

🌱 Other Onion Varieties for Zone 13a

Tokyo Long White
65-75 days
Tokyo Long White
65-75 days
Tokyo Long White
65-75 days
Tokyo Long White
65-75 days

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