Carrot

Growing Carrot in Zone 9a

A complete, zone-9a timeline for Carrot — when to start, transplant, and harvest, tuned to this zone's typical frost dates (Houston, Phoenix, Orlando).

February 25Last spring frost
November 30First fall frost
about 278 daysGrowing season
20 to 30°FWinter low

Your planting timeline

  1. Direct sowonce soil warms, around February 25
  2. Harvestabout 60–80 days from transplant

Best varieties for zone 9a

Grow carrots as a cool-season fall-through-spring crop, choosing heat-tolerant types like Danvers 126 and Kuroda that resist bolting and bitterness.

Growing notes

Carrots need steady, even moisture — roughly 1 inch per week — especially during the slow germination stretch, when the seedbed must never crust over or dry out. Keep the surface consistently damp for the two to three weeks it takes for seeds to sprout; a light board or burlap laid over the row holds moisture until germination. Once established, water deeply to encourage roots to grow long and straight rather than forking toward shallow moisture. Erratic wet-then-dry swings cause the roots to split, crack, or turn woody. A light mulch between rows steadies soil moisture. Ease off slightly as roots near maturity, since too much late water can crack them.

Recommended supplies

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