✓
Growing Space in Zone 1b
Spinacia oleracea
✓ Well Suited for Zone 1b
Score: 87/100
🌡️ USDA Hardiness Zone 1b
Extreme Arctic
USDA 2023 Verified
Growing Season
30-60 days
Winter Minimum
-55°F to -50°F
(-48.3°C to -45.6°C)
AHS Heat Zone 1-1
Less than 1 heat day per year • Minimal heat stress
Typical regions: Interior Alaska, Northern Alaska
📊 Data Source:
USDA Plant Hardiness Zone Map 2023 • Last verified: 1/22/2026
✓ Zone Compatibility Analysis
high confidenceGood match: 43 days to maturity fits 60-day season with 17 days buffer.
Recommendation: Start seeds indoors for best results. Can also direct sow after last frost.
💾 Suitability computed by Solara Agricultural Intelligence Platform
📅 Zone 1b Planting Calendar for Space
🌱 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
June 12
💡 Zone 1b Growing Tips
- • Growing season: 30-60 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 1b Challenges
⚠️Permafrost
⚠️Extreme cold
⚠️Very short growing season
⚠️Limited plant selection
✅ Best Plants for Zone 1b
✓Arctic willows
✓Mosses
✓Lichens
✓Hardy native perennials
❄️ Winter in Zone 1b
Extreme arctic winters with temperatures regularly below -50°F.
☀️ Summer in Zone 1b
Brief, cool summers. Growing season approximately 8-10 weeks.
🔥 Heat Management for AHS Zone 1-1
This zone experiences less than 1 heat day per year with minimal heat stress.
🌡️No heat protection needed
🌡️Focus on cold hardiness
Source: American Horticultural Society
📊 Space Quick Facts
Days to Maturity
37-50
Difficulty
intermediate
Season
summer
Type
OP
📍 View Space Guide for Other Zones
🌱 Other oleracea Varieties for Zone 1b
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