Start indoors
No supported crops start indoors in December for ZIP 48226.
Month planting calendar
What to plant in December in Detroit (48226)
In Detroit, ZIP 48226, zone 6b, here is what you can start indoors, transplant, or direct-sow in December, and what to wait on until later.
Source: detroit-metro frost station, USDA zone 6b, last updated 2026-06-28. Verify locally before planting high-value crops because microclimates, current weather, and yard exposure can move the safe date.
Transplant
No supported crops transplant in December for ZIP 48226.
Direct-sow
No supported crops direct-sow in December for ZIP 48226.