Cool-season crop
When to Direct-Sow Carrots in Spring and Fall
Calculate frost-relative carrot sowing windows and review seed depth, thinning distance, maturity, moisture, and root-bed limits.
Reviewed by Garden By ZIP Editorial Review ·
- Spacing
- 1–3 in
- Seed depth
- 0.25–0.5 in
- Typical maturity
- 55–80 days
Quick answer
Direct-sow carrots about 4–2 weeks before the last spring freeze reference. For a fall crop, count back roughly 10–12 weeks from the first fall freeze reference. The planting calendar supplies the local date ranges.
Planting methods
Carrots should be direct-sown because transplanting disturbs the developing root. Keep the seed zone evenly moist until emergence and thin rather than relying on dense seedlings to separate themselves.
Spacing, depth, and maturity
Sow about 1/4–1/2 inch deep and thin to 1–3 inches, depending on root size. Many varieties mature in 55–80 days.
Worked local-calendar example
With an April 19 last spring freeze reference, the spring sowing range falls in late March to early April. With an October 23 first fall freeze reference, count back into late July or August. This remains a local-calendar example.
Common mistakes
- Letting the surface crust or dry before germination.
- Skipping thinning and producing undersized roots.
- Using shallow or stony soil for long-rooted varieties.
Limitations
Soil texture, root type, heat, moisture, and germination speed affect timing. Frost offsets cannot measure the condition of the seedbed.