When to Plant Shallot in Amherst, Colorado (80721)

Location

Amherst, Colorado

ZIP Code

80721

USDA Zone

Last Frost

Saturday, April 25, 2026

📅 Your 2026 Planting Dates

Start Seeds Indoors

Saturday, February 28, 2026

Transplant Outdoors

Saturday, May 9, 2026

Based on last frost Saturday, April 25, 2026 · Zone 5b

Pro tip: Start Shallot seeds indoors 8 weeks before your last frost date, then transplant outdoors around Saturday, May 9, 2026.

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🌿 Plant Details

Scientific Name Allium cepa var. aggregatum

Days to Maturity 90 days

☀️ Growing Requirements

☀️

Sun

Full Sun

💧

Water

Regular

Seeds typically germinate in 8-21 days

Ready to Plant Shallot in Amherst?

Get your seeds now so they're ready by Saturday, February 28, 2026.

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🛠️ Supplies You'll Need

🌱 Seed Starting Trays 🪴 Seed Starting Mix 💡 Grow Lights 🌡️ Heat Mat 🪵 Raised Garden Bed 🌍 Vegetable Garden Soil 🛠️ Hand Trowel Set 🚿 Watering Can

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🌾 Seed Saving Guide

🪴 Vegetative propagation

Propagate vegetatively, not by seed

Shallots are typically propagated by dividing and replanting bulb offsets, not from seed.

Set aside small bulbs from the harvest to replant in fall or early spring for next year's crop.

Frequently Asked Questions

When should I plant Shallot in Amherst, Colorado? +

In Amherst (Zone 5b), start Shallot seeds indoors around Saturday, February 28, 2026 and transplant outdoors around Saturday, May 9, 2026.

What is the last frost date for Amherst, Colorado? +

The average last spring frost date for Amherst, Colorado (ZIP 80721) is around Saturday, April 25, 2026. This is based on NOAA climate normals for USDA Zone 5b.

How long does Shallot take to grow? +

Shallot typically matures in about 90 days from transplanting. In Amherst, that means you can expect harvest around Saturday, May 9, 2026 plus 90 days.

Should I start Shallot indoors or direct sow in Colorado? +

Shallot should be started indoors 8 weeks before your last frost date. In Amherst, that means starting around Saturday, February 28, 2026.

📚 More Shallot Planting Guides

🗺️

Shallot in Colorado

Zone-by-zone breakdown · Full state guide

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Zone 5b Shallot Guide

All cities in your zone · Avg dates

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Growing Shallot in Zone 5b

Shallot (Allium cepa var. aggregatum) is a popular garden vegetable. In Amherst, Colorado, which is in USDA Hardiness Zone 5b, you should start seeds indoors around Saturday, February 28, 2026.

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