When to Plant Roma Tomato in Fort Lupton, Colorado (80621)

Location

Fort Lupton, Colorado

ZIP Code

80621

USDA Zone

Last Frost

Saturday, April 25, 2026

📅 Planting Calendar

Start Seeds Indoors Saturday, March 14, 2026

Transplant Outdoors Saturday, May 9, 2026

Pro Tip: Start Roma Tomato seeds indoors 6 weeks before your last frost date, then transplant outdoors around Saturday, May 9, 2026.

🌿 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

Ready to Plant Roma Tomato in Fort Lupton?

Get your seeds now so they're ready by Saturday, March 14, 2026.

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Growing Roma Tomato in Zone 5b

Roma Tomato (Solanum lycopersicum) is a popular garden vegetable. In Fort Lupton, Colorado, which is in USDA Hardiness Zone 5b, you should start seeds indoors around Saturday, March 14, 2026.

Your average last frost date is Saturday, April 25, 2026. Plan to transplant your Roma Tomato seedlings outdoors around Saturday, May 9, 2026, about 2 weeks after your last frost date.