North Carolina planting calendar

When to plant kohlrabi in North Carolina — sow, transplant & harvest dates

North Carolina is mostly USDA zone 7b (range 5b-8b). Dates below are derived from kohlrabi's frost tolerance and North Carolina's frost window — not generic national averages.

Kohlrabi planting timetable for North Carolina

Stage	When in North Carolina	Anchor
Start seeds indoors	early March (March 1)	5 weeks before the last frost (early April)
Transplant outside	mid-March (March 15)	21 days before the last frost (early April)
First harvest (estimate)	early May (May 9)	~55 days from transplant

Dates are state-wide averages for the dominant zone. Local microclimates — elevation, urban heat, coastal moderation — can shift the window by 1-2 weeks. Use the frost-date calculator for a date tuned to your town.

Why North Carolina's climate shifts the kohlrabi dates

North Carolina's last spring frost averages early April and first fall frost late October, which sets the whole planting clock. North Carolina runs from cool mountains through the Piedmont to a warm coastal plain — one of the widest east-coast zone spans. Sow early — kohlrabi bolt once daytime temperatures hold above 24 °C, so the earlier they go in, the longer the harvest.

Kohlrabi is a fast-maturing brassica that tolerates light frost down to about -4 °C but turns woody and pithy when daytime temperatures exceed 27 °C; transplant or direct-sow 3–4 weeks before the last spring frost for a summer harvest, or time a second sowing so plants mature in the cool days of early autumn. Harvest promptly when the swollen stem reaches 5–7 cm (2–3 inches) in diameter — larger bulbs become fibrous. Succession-sow every 3 weeks to extend the harvest window.

Frost-risk note

Don't plant before early April — a hard freeze can still set young plants back. In the high Blue Ridge near Mount Mitchell (zone 5b) the safe date runs a week or two later.

Regional variation within North Carolina

the high Blue Ridge near Mount Mitchell (zone 5b) runs roughly 1-2 weeks behind the state average; the southern coast around Wilmington (zone 8b) can plant 1-2 weeks earlier.

Charlotte — USDA zone 8a
Raleigh — USDA zone 8a
Greensboro — USDA zone 7b
Asheville — USDA zone 7a
Wilmington — USDA zone 8b

What else to plant in North Carolina around then

The same early window suits peas, lettuce, spinach, and onion sets.

Quick-grow guide

Sun: Full sun — 6+ hours direct.
Soil temperature for germination: 7-29 °C (45-85 °F).
Spacing: 6-9 inches (15-23 cm) between plants.
Days to harvest: ~55 days from planting out.

Frequently asked questions

When is the best time to plant kohlrabi in North Carolina?

In North Carolina (mostly USDA zone 7b), sow kohlrabi indoors around early March, transplant outdoors mid-March (before the last frost, early April), and harvest from early May. Kohlrabi are half-hardy — young plants shrug off a light frost but not a hard freeze, so sowing can start a couple of weeks before the last spring frost.

What USDA zone is North Carolina?

Most of North Carolina sits in USDA hardiness zone 7b, with the state spanning roughly 5b-8b from the high Blue Ridge near Mount Mitchell (zone 5b) to the southern coast around Wilmington (zone 8b). The last spring frost averages early April and the first fall frost late October.

Can you grow kohlrabi in North Carolina?

Yes. North Carolina's dominant zone 7b supports kohlrabi — the key is timing. Kohlrabi are half-hardy — young plants shrug off a light frost but not a hard freeze, so sowing can start a couple of weeks before the last spring frost.

Does the planting date change across North Carolina?

the high Blue Ridge near Mount Mitchell (zone 5b) runs roughly 1-2 weeks behind the state average; the southern coast around Wilmington (zone 8b) can plant 1-2 weeks earlier.

What else can I plant in North Carolina around the same time?

The same early window suits peas, lettuce, spinach, and onion sets.

Source and methodology

State zone spans from the USDA Plant Hardiness Zone Map (2023); frost-date averages from NOAA Climate Data Online. Hot-state two-season timing cross-checked against the UF/IFAS Florida Gardening Calendar and the University of Arizona Cooperative Extension planting calendar. Curated by the Growli editorial team.