California planting calendar

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

California is mostly USDA zone 9b (range 5a-11a). Dates below are derived from chives's frost tolerance and California's frost window — not generic national averages.

Chives planting timetable for California

Stage	When in California	Anchor
Start seeds indoors (spring crop)	early January (January 4)	6 weeks before the last frost (mid-February (coast) to late April (interior))
Transplant outside (spring crop)	early February (February 1)	-14 days after the last frost (mid-February (coast) to late April (interior))
Spring-crop harvest	early April onward, before peak summer heat	60-day crop — finishes before mid-summer
Plant the fall crop	late August (August 27) — once the worst heat breaks	~80 days before the first fall frost (mid-November (coast) to mid-October (interior))
Fall-crop harvest	late October into early winter	60-day crop — often the more productive of the two

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 California's climate shifts the chives dates

California's long hot summer shuts down fruit set, so locals run two short crops — a spring planting and a fall planting — around a deliberate mid-summer pause, instead of one long northern-style season. California packs more climate diversity than almost any state — alpine mountains, Mediterranean coast, Central Valley farmland, and desert. Coastal and valley areas grow year-round.

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

A light frost in the high Sierra Nevada (zone 5a-6a) can clip an early spring planting; the bigger risk is mid-summer heat sterilising flowers.

Regional variation within California

the southern coast and Imperial Valley (zone 11a) can start the spring crop weeks earlier and may garden almost year-round; the high Sierra Nevada (zone 5a-6a) runs a shorter, more northern-style single season.

Los Angeles — USDA zone 10b
San Francisco — USDA zone 10b
Sacramento — USDA zone 9b
San Diego — USDA zone 10b
Fresno — USDA zone 9b

What else to plant in California around then

Pair the spring slot with other heat-lovers (peppers, squash, beans); use the cool October–February window for greens and brassicas.

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 California?

In California (mostly USDA zone 9b), sow chives indoors around early January, set the spring crop out early February, harvest before peak summer heat, then plant a second crop late August for an autumn harvest. Avoid mid-summer. 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 California?

Most of California sits in USDA hardiness zone 9b, with the state spanning roughly 5a-11a from the high Sierra Nevada (zone 5a-6a) to the southern coast and Imperial Valley (zone 11a). The last spring frost averages mid-February (coast) to late April (interior) and the first fall frost mid-November (coast) to mid-October (interior).

Can you grow chives in California?

Yes. California's dominant zone 9b 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 California?

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

Pair the spring slot with other heat-lovers (peppers, squash, beans); use the cool October–February window for greens and brassicas.

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.