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Growing Goliath in Zone 3a
Solanum lycopersicum
Varies for Zone 3a
🌡️ USDA Hardiness Zone 3a
Cold Continental
USDA 2023 Verified
Growing Season
90-120 days
Winter Minimum
-40°F to -35°F
(-40.0°C to -37.2°C)
Last Spring Frost
May 20
50% probability
First Fall Frost
September 12
50% probability
AHS Heat Zone 1-3
Less than 1 heat day per year • Minimal heat stress
Typical regions: Northern Minnesota, Northern Wisconsin, Montana mountains, Fairbanks AK
📊 Data Source:
USDA Plant Hardiness Zone Map 2023 • Frost dates from NOAA station USW00026411 • Last verified: 1/22/2026
📊 Zone Compatibility Analysis
💾 Suitability computed by Solara Agricultural Intelligence Platform
📅 Zone 3a Planting Calendar for Goliath
Based on NOAA climate normals for Zone 3a. Dates show 50% probability (average year).
🌱 Start Seeds Indoors
6-8 weeks before May 20
Approximately late winter to early spring
🪴 Transplant Outdoors
After May 20
When soil reaches 60°F+
🌾 Direct Sow (Alternative)
2 weeks after May 20
For warm-season crops
🥕 Expected Harvest
65-75 days after planting
Complete before September 12
💡 Zone 3a Growing Tips
- • Growing season: 90-120 frost-free days
- • ⚠️ Season extension required - consider cold frames or hoop houses
- • Monitor soil temperature before transplanting (minimum 55-60°F for most crops)
⚠️ Zone 3a Challenges
⚠️Very cold winters
⚠️Short growing season
⚠️Late spring frosts
✅ Best Plants for Zone 3a
✓Hardy perennials
✓Root vegetables
✓Cold-tolerant fruit trees
❄️ Winter in Zone 3a
Very cold winters with temperatures occasionally reaching -40°F.
☀️ Summer in Zone 3a
Moderate summers with adequate growing conditions for hardy crops.
🔥 Heat Management for AHS Zone 1-3
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
📊 Goliath Quick Facts
Days to Maturity
65-75
Difficulty
beginner
Season
summer
Type
F1
📍 View Goliath Guide for Other Zones
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