Month planting calendar

What to plant in December in Philadelphia (19103)

In Philadelphia, ZIP 19103, zone 7b, here is what you can start indoors, transplant, or direct-sow in December, and what to wait on until later.

Source: philadelphia-intl 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.