Planting Guides

When to Plant Carrots in Raleigh: Zone 7b Dates + Best Varieties

Raleigh, North Carolina

USDA Zone 7b

Last Frost: Apr 5

Last updated: October 30, 2025

Plant carrots in Raleigh from early March through mid-April for spring harvest. Sow fall crops in late August through September for sweet roots that mature through Zone 7b's mild Piedmont autumn.

RRachel Abrams

October 30, 2025

Fresh carrots harvested from a Raleigh Zone 7b garden with North Carolina Piedmont red clay soil — — Image © PlantReference.org 2026

Quick Answer

Sow carrot seeds outdoors early March through mid-April in Raleigh for spring harvest. Plant fall crops late August through September for Zone 7b's best roots.

TL;DR

Raleigh's Zone 7b provides a 214-day growing season between the April 5 last frost and November 5 first frost, with moderate Piedmont temperatures that suit carrots well in both spring and fall. Sow spring carrots early March through mid-April, and plant fall crops late August through September for the sweetest roots of the year. Daucus carota subsp. sativus 'Danvers 126' handles the Piedmont's red clay, while Daucus carota subsp. sativus 'Nantes' delivers peak flavor in amended beds.

Frequently Asked Questions

When should I start planting carrots in Raleigh?

Start sowing carrot seeds outdoors in early March, about four weeks before Raleigh's April 5 average last frost. Carrots tolerate light frost, so early planting carries no risk. Continue succession sowings every two to three weeks through mid-April for staggered harvest.

What is the best carrot variety for Raleigh soil?

Daucus carota subsp. sativus 'Danvers 126' is the most reliable variety for Raleigh's native Piedmont red clay. The conical root generates enough force to push through dense soil, and the firm flesh stores well for months.

How do I prepare Raleigh's red clay for carrots?

Work the top 10-12 inches with a garden fork and incorporate 3-4 inches of finished compost plus 1-2 inches of coarse sand. Test pH through the NC Cooperative Extension—Raleigh clay typically runs 5.5-6.5, and carrots prefer 6.0-6.8. Add lime if needed to raise pH.

Can I grow carrots through Raleigh's summer?

Not well. Soil temperatures exceed 75°F from late June through mid-August, causing bitter flavor from terpenoid compound production. Raleigh's summer gap is shorter than cities farther south—about 6-8 weeks—which means you can push spring harvest later and start fall sowing earlier than Atlanta or Dallas gardeners.

Can I overwinter carrots in Raleigh?

Yes. Raleigh's Zone 7b winters are mild enough for fall carrots to remain in the ground through December, January, and often into February with mulch protection. Apply 3-4 inches of straw after the November 5 first frost. Temperatures occasionally dip into the teens°F (-8°C), but mulched roots survive without damage.

How do I prevent leaf blight on Raleigh carrots?

Raleigh's humidity promotes Alternaria and Cercospora leaf blight, especially during warm, wet shoulder seasons. Space rows at least 12 inches apart for airflow, use drip irrigation instead of overhead watering, and remove infected foliage as soon as brown lesions appear.

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#planting-guide #carrots #raleigh #zone-7b #vegetable-gardening

Written By

Rachel Abrams

Rachel is a garden writer and photographer based in Raleigh who covers the Piedmont region of North Carolina. She has a journalism background and got into gardening after buying her first house and realizing she had no idea what any of the plants in her yard were. That curiosity led to a Master Gardener certification and eventually a garden writing career. Rachel is especially interested in native plants of the Southeast, seasonal color, and the challenge of gardening in red clay soil. Her photography background means she pays attention to how gardens look through the seasons—she thinks about visual composition as much as plant health. She writes clearly and directly, without the breathless enthusiasm that makes a lot of garden writing hard to trust.