Growing Carrot in Zone 3b
A complete, zone-3b timeline for Carrot — when to start, transplant, and harvest, tuned to this zone's typical frost dates (International Falls, MN; Fargo, ND).
Your planting timeline
- Direct sowonce soil warms, around May 17
- Harvestabout 60–80 days from transplant
Best varieties for zone 3b
Stick to fast, cold-hardy types like Nelson, Yaya, and Mokum that size up quickly in the short window between late spring and early fall frost.
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
- A seed-starting kit
- A raised garden bed kit
- A sturdy hand trowel
- Frost cloth for cold snaps
- A long-spout watering can
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