When to Plant Roma Tomato in Yellowstone National Park, Wyoming (82190)
Location
Yellowstone National Park, Wyoming
ZIP Code
82190
USDA Zone
4b
Last Frost
Tuesday, May 5, 2026
📅 Planting Calendar
Start Seeds Indoors Tuesday, March 24, 2026
Transplant Outdoors Tuesday, May 19, 2026
Pro Tip: Start Roma Tomato seeds indoors 6 weeks before your last frost date for best results.
🌿 Plant Details
Scientific Name Solanum lycopersicum
Days to Maturity 75 days
Mature Height 30-36"
Spread 18"
Type Determinate
Fruit Size Medium (2-3 oz)
☀️ Growing Requirements
☀️
Sun
Full Sun (6-8 hours)
💧
Water
Regular (1-2 inches/week)
↔️
Spacing
24" apart
🌱
Planting Depth
0.25" deep
Seeds typically germinate in 7-14 days
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Growing Roma Tomato in Zone 4b
Roma Tomato (Solanum lycopersicum) is a popular garden vegetable. In Yellowstone National Park, Wyoming, which is in USDA Hardiness Zone 4b, you should start seeds indoors around Tuesday, March 24, 2026.
Your average last frost date is Tuesday, May 5, 2026. Plan to transplant your Roma Tomato seedlings outdoors around Tuesday, May 19, 2026, about 2 weeks after your last frost date.