GrowZone

Seed-start answer

Carrots is usually direct-sown around Feb 27

This uses ZIP 98101, the Seattle frost station, and the Mar 20 last-frost estimate.

Seed starting schedule

Carrots dates for Seattle, WA

StepDateHow to use it
Direct SowFebruary 27, 2026Sow seed outside when the crop and soil can handle the window.