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What to Plant in March in Colorado

Here's what you can plant in Colorado during March. Since Colorado spans multiple USDA zones, planting dates vary by location. Find your zone below.

Zone 6a

View full Zone 6a planting guide for March

Direct Sow

Zone 6b

View full Zone 6b planting guide for March

Transplant Outdoors

Direct Sow

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Last updated: April 2026.