Month planting calendar

What to plant in March in Denver (80202)

In Denver, ZIP 80202, zone 6a, here is what you can start indoors, transplant, or direct-sow in March, and what to wait on until later.

Source: denver-intl frost station, USDA zone 6a, last updated 2026-06-28. Verify locally before planting high-value crops because microclimates, current weather, and yard exposure can move the safe date.