When to Plant Spinach in BC — 2026 Guide

🌊 Coastal BC — Year-Round Spinach

• Victoria: sow late January, harvest March through June
• Vancouver: sow February, harvest March through June
• Fall: sow August–October, harvest through December
• Overwinter: cold frame sowing in October–November
• Gap: only 6–8 weeks (late May to early August)
• Victoria can close this gap almost entirely with cover

Key tool: A simple cold frame turns coastal BC into near year-round spinach production

☀️ Interior & Northern BC — Two Seasons

• Kelowna: spring (March–April) + fall (August)
• Prince George: spring (April) + fall (early August only)
• Summer bolting same as Ontario — June through August
• No overwinter production — ground freezes too hard
• Row cover extends fall harvest by 2–3 weeks
• Similar pattern to Toronto and Ottawa

Key tool: Row cover for fall extension — cold frame not viable for overwinter

Most bolt-resistant hybrid. Best for spring sowings across all BC zones. Semi-savoy leaves. Excellent for extending the spring season before June bolting trigger.

Fast smooth-leaf spinach. Excellent for all BC seasons including overwinter in coastal BC. Upright growth, productive, widely available at BC garden centres.

Classic heirloom, savoy (crinkled) leaves with rich flavour. Bolt-resistant for an open-pollinated variety. Excellent for fall and overwinter in Vancouver and Victoria.

Fast dark green upright hybrid. Best for Prince George's short fall window and quick spring sowings. Also excellent for baby leaf succession sowing across coastal BC.

Heat-tolerant summer substitute. Not true spinach but similar use. Works through summer in Kelowna's heat when regular spinach cannot. Not needed in coastal BC where cool summers limit the bolting gap.

A cold frame transforms coastal BC spinach production

A simple cold frame — even just an old window laid over a low wooden box — dramatically extends the BC coastal spinach season. Start spinach under a cold frame in late January in Victoria or mid-February in Vancouver, weeks before you could sow outdoors. In fall, cover September and October sowings with a cold frame to protect through November and December. In a mild Vancouver winter, cold-frame spinach sown in October can produce through January and February. The cold frame is the single most useful tool for coastal BC spinach growers.

Succession sow every 2 weeks in spring

Each spinach sowing produces a 2–3 week harvest window before bolting. Sow every 2 weeks from your first spring sowing date through mid-May for continuous harvest. In coastal BC's long spring, this can mean 6–7 small sowings from February through May. Sow small amounts frequently — a 30 cm row sown every 2 weeks provides continuous fresh spinach for two people through the spring season.

Bolting happens everywhere in BC — even in cool Vancouver

A common misconception is that Vancouver's cool summers mean spinach won't bolt. It will — the bolting trigger is day length, not temperature. Around May 20, days exceed 14 hours across all of BC, and spinach begins preparing to flower regardless of how cool and cloudy the weather is. Accept June as the end of the spring crop, switch to Swiss chard or New Zealand spinach for the summer, and start your fall sowing in August.

Harvest outer leaves continuously — cut-and-come-again

Pick the outer, larger leaves and leave the inner growing point intact. The plant continues producing new leaves from the centre for 2–3 weeks longer than if you harvest the whole plant at once. Once a central flower stalk appears, harvest everything immediately — leaves become bitter within days of bolting. In coastal BC's long spring, this cut-and-come-again approach can extend each plant's useful life significantly.

Interior BC: row cover for fall extension

In Kelowna and Kamloops, a lightweight row cover (frost blanket) over August-sown spinach extends the fall harvest by 2–3 weeks past the first frost. Lay it over plants when the first frost is forecast. Kelowna's sharp fall frosts can arrive in late September — row cover keeps the crop going through October. In Prince George, row cover is essential for any fall spinach to reach harvest — the frost window is tight in August and September.

When should I plant spinach in BC?

Victoria: start late January (spring), sow August through October (fall/winter). Vancouver: start February (spring), sow August to September (fall). Kelowna: start late March (spring), sow early August (fall). Prince George: start early April (spring), sow early August (fall only). Use the frost calculator for your city's frost dates to time your fall sowing.

Why does my Vancouver spinach bolt in June?

Vancouver's cool, cloudy summers don't prevent bolting — the trigger is day length, not temperature. Once days exceed 14 hours around May 20, spinach begins flowering regardless of weather. Accept June as the end of the spring crop and switch to Swiss chard or New Zealand spinach for summer. Start your fall sowing in August when days are shortening again.

Can I grow spinach in winter in Victoria?

Yes — Victoria's Zone 8b winters rarely freeze hard enough to kill spinach. Plants grow slowly through the winter but survive and accelerate growth as days lengthen in February and March. A cold frame or low tunnel dramatically increases winter production by keeping plants warmer and protected from heavy rain. Sow in September or October for winter harvest through January and February.

How does BC spinach growing compare to Ontario?

Coastal BC (Vancouver, Victoria) can harvest spinach for 8–10 months per year versus Ontario's 4–5 months. The spring start is 4–6 weeks earlier in Vancouver than Toronto, and the overwinter production window is unique to coastal BC. Interior BC (Kelowna, Prince George) follows similar timing to Ontario. The summer bolting problem is identical across all regions — day length is universal.