Oklahoma planting calendar

When to plant chives in Oklahoma — sow, transplant & harvest dates

Oklahoma is mostly USDA zone 7b (range 6b-8a). Dates below are derived from chives's frost tolerance and Oklahoma's frost window — not generic national averages.

Chives planting timetable for Oklahoma

Stage	When in Oklahoma	Anchor
Start seeds indoors	late February (February 22)	6 weeks before the last frost (early April)
Transplant outside	late March (March 22)	14 days before the last frost (early April)
First harvest (estimate)	late May (May 21)	~60 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 Oklahoma's climate shifts the chives dates

Oklahoma's last spring frost averages early April and first fall frost late October, which sets the whole planting clock. Oklahoma has a long, hot, often windy season. Summer heat and drought stress are as limiting as the winter low across most of the state. Wait for warm soil — chives stall in cold ground even after the air warms, so don't rush them out.

Start seeds indoors 6–8 weeks before the last spring frost; germination takes 7–14 days at 18–21 °C (65–70 °F), though seeds will germinate across a broad range of 15–35 °C (60–95 °F). As a cold-hardy perennial (zones 3–9), transplants can go out 1–2 weeks before the last frost once soil is workable — or direct-sow as soon as the ground can be worked in early spring. Begin snipping leaves about 30 days after transplanting (or ~60 days from seed) once plants reach 15 cm (6 in) tall; divide clumps every 3–4 years to maintain productivity.

Frost-risk note

Don't plant before early April — a hard freeze can still set young plants back. In the Panhandle High Plains (zone 6b) the safe date runs a week or two later.

Regional variation within Oklahoma

the Panhandle High Plains (zone 6b) runs roughly 1-2 weeks behind the state average; the south-central and southeast lowlands (zone 8a) can plant 1-2 weeks earlier.

Oklahoma City — USDA zone 7b
Tulsa — USDA zone 7b
Norman — USDA zone 7b
Lawton — USDA zone 8a

What else to plant in Oklahoma around then

Pair the post-frost slot with other warm-season crops — peppers, beans, squash, and cucumbers.

Quick-grow guide

Sun: Full sun to partial shade — 4–6+ hours direct.
Soil temperature for germination: 15–21 °C (60–70 °F).
Spacing: 6–12 inches (15–30 cm) between plants.
Days to harvest: ~60 days from planting out.

Frequently asked questions

When is the best time to plant chives in Oklahoma?

In Oklahoma (mostly USDA zone 7b), sow chives indoors around late February, transplant outdoors late March (before the last frost, early April), and harvest from late May. Chives are cold-hardy — they tolerate frost and actively prefer cool weather, so they go in well before the last spring frost and bolt in summer heat.

What USDA zone is Oklahoma?

Most of Oklahoma sits in USDA hardiness zone 7b, with the state spanning roughly 6b-8a from the Panhandle High Plains (zone 6b) to the south-central and southeast lowlands (zone 8a). The last spring frost averages early April and the first fall frost late October.

Can you grow chives in Oklahoma?

Yes. Oklahoma's dominant zone 7b supports chives — the key is timing. Chives are cold-hardy — they tolerate frost and actively prefer cool weather, so they go in well before the last spring frost and bolt in summer heat.

Does the planting date change across Oklahoma?

the Panhandle High Plains (zone 6b) runs roughly 1-2 weeks behind the state average; the south-central and southeast lowlands (zone 8a) can plant 1-2 weeks earlier.

What else can I plant in Oklahoma around the same time?

Pair the post-frost slot with other warm-season crops — peppers, beans, squash, and cucumbers.

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.