Month planting calendar

What to plant in March in Baltimore (21201)

In Baltimore, ZIP 21201, zone 7b, here is what you can start indoors, transplant, or direct-sow in March, and what to wait on until later.

Source: baltimore-inner-harbor frost station, USDA zone 7b, last updated 2026-06-28. Verify locally before planting high-value crops because microclimates, current weather, and yard exposure can move the safe date.