Soil requirements
- Fork out rocks and clods. Forked roots are usually a soil-structure problem.
- Fresh manure makes hairy, branched roots. Use finished compost.
- See raised bed depth if your frame is only 6 inches tall.
Watering
- The seedbed cannot crust and dry for 1–3 weeks. A light board or row cover can help hold moisture until sprouts show.
- After thinning, water deeply so roots chase moisture down.
Sunlight
Full sun produces sweeter, fuller roots. Light shade is a last resort in extreme heat.
Planting
- Sow densely, then thin. Crowded carrots do not size up.
- Mix seed with sand for more even sowing.
Spacing
- Thin to 1–3 inches depending on variety (Nantes vs large storage types).
- Square-foot: often 16 per square.
Common problems
Poor germination
Usually a dry seedbed or old seed. Carrot seed is short-lived.
Forked roots
Rocks, compaction, or fresh manure. Not a fertilizer brand problem.
Helpful tools
- Soil sieve for rocky fill
- Row cover optional
See the garden tools hub for how to choose supports and hand tools.
Frequently asked questions
Why are my carrots short?
Shallow soil, late thinning, or a variety that is naturally short (many “container” types). Match variety to bed depth.