Spinach is one of the most rewarding vegetables a beginner can grow: it germinates in days, gives you the first harvest within weeks, and keeps producing leaf after leaf if you pick it the right way. A single row sown in spring can supply salads for months — and a second sowing in late summer stretches the harvest into winter.
The one thing spinach asks of you is timing. It dislikes heat, so spring and autumn sowings thrive while midsummer sowings bolt (run to seed) almost immediately. Get the timing right and spinach is nearly foolproof; this guide shows you exactly when and how to sow, plus the picking technique that keeps plants productive.
| Care point | What spinach needs |
|---|---|
| Sun | Full sun to partial shade; afternoon shade in warm spells |
| Water | Regular and even — never let the soil dry out |
| Soil & pH | Rich, moisture-retentive, well-drained; pH 6.0–7.5 |
| Sow outdoors (Central Europe) | March–May and August–September |
| Spacing | Rows 25–30 cm apart; thin seedlings to 10–15 cm |
| Days to harvest | 40–60 days from sowing |
| Difficulty | Easy — if you sow in cool weather |
Step 1: Sow in cool weather — timing is everything
Spinach germinates best when soil is between 10 and 20°C, which in Central and Western Europe means March to May for the spring crop and August to early September for the autumn crop. Soil warmer than about 25°C makes germination patchy and triggers bolting — the plant's rush to flower in heat.
This is why spinach earns its reputation as a spring and autumn vegetable. Sow a short row every 2–3 weeks during those windows and you get a continuous supply instead of one glut. Skip June and July sowings outdoors unless you have a reliably shady, cool spot — and see our lettuce guide, which follows the same cool-season rhythm.
Step 2: Prepare a rich, moisture-holding bed
Spinach is a hungry, thirsty leaf crop. Work a generous layer of compost into the bed before sowing — roughly 5 cm forked into the top 20 cm — because rich soil holds the moisture spinach craves and feeds the fast leaf growth you want. If your soil is thin or sandy, this step matters even more; our soil basics guide explains how compost transforms poor ground.
Choose a spot with full morning sun but some afternoon shade if you can — a bed east of a fence or under the light shade of taller crops like tomatoes works beautifully for late-spring sowings. Shade cloth or fleece also buys you a few extra weeks before bolting.
Step 3: Sow thinly and not too deep
Make a shallow drill (furrow) about 2 cm deep, water it first so the soil is moist, then sow seeds about 2–3 cm apart and cover lightly. Space rows 25–30 cm apart so you can hoe between them. Firm the soil gently and water again with a fine rose.
Seedlings usually appear in 7–14 days. When they have two true leaves, thin them to 10–15 cm apart — crowded spinach stays small and bolts sooner. Yes, thinning feels wasteful, but the thinnings are delicious in salads, so nothing is lost.
Step 4: Water little and often
Spinach hates drying out — drought stress is the fastest route to bolting. Water regularly so the soil stays evenly moist, especially in dry spring spells. A mulch of compost or straw around the rows helps enormously, keeping roots cool and moisture in.
Water at the base rather than over the leaves where possible; wet foliage in warm weather invites downy mildew. Morning watering is ideal. In pots — spinach grows well in a 20 cm deep container — check daily in warm weather; see our container gardening guide for pot sizes and compost tips.
Step 5: Harvest leaf by leaf — the cut-and-come-again method
Start picking when leaves are big enough to eat, usually 40–60 days after sowing. Take the outer leaves first, snapping or cutting them at the base, and leave the small inner leaves and the growing crown untouched. The plant keeps producing new leaves from the centre for weeks — this is the technique that turns one sowing into months of harvest.
Pick little and often rather than stripping a plant bare. In peak season a row picked every 2–3 days stays productive; neglected plants sense they are "done" and bolt. For baby-leaf salads, sow thickly and cut whole patches 5 cm above the ground — they regrow for a second and sometimes third cut.
Step 6: Plan the autumn sowing for winter leaves
The August to early-September sowing is the secret to winter spinach. Plants establish before the cold, then sit quietly through winter — especially hardy varieties like 'Medania' or 'Winter Giant' — and burst back into growth in February and March, giving you the earliest leaves of the year.
Sow under a cloche or in a cold frame for extra protection, though hardy varieties survive uncovered in most of Western and Central Europe. A fleece cover in the coldest snaps is usually all the insurance you need.
Troubleshooting: common spinach problems
Plants bolted (ran to flower) almost immediately: Heat or drought stress — the two triggers. Sow only in cool months, water consistently, mulch, and choose bolt-resistant varieties like 'Emilia' or 'Red Cardinal' for spring sowings.
Poor germination: Usually soil that was too warm or dried out after sowing. Water the drill before sowing, keep it moist until seedlings appear, and in warm spells sow in the cool of the evening. Pre-chilling seeds in the fridge for a few days can help summer-edge sowings.
Yellow, pale leaves: Most often nitrogen hunger in poor soil or overwatering washing nutrients away. Feed with a balanced liquid fertiliser and check drainage — our Plant Doctor guide to yellow leaves walks through the full diagnosis.
Grey-purple fuzzy patches under leaves: Downy mildew, common in damp, crowded conditions. Improve airflow with proper spacing, water at the base, remove affected leaves, and avoid sowing spinach in the same spot two years running.
What to do this October
October is the tail end of the autumn-sowing window: if you sowed spinach in August or September, your plants are establishing now — keep them weed-free and watered in dry spells, and consider a fleece cover as nights turn cold. It is too late to sow a new crop outdoors in most regions (seedlings will not establish before winter), but you can still sow winter-hardy varieties under a cloche or cold frame in the first half of the month for early-spring leaves.
October's other spinach job is planning: note which varieties did well this year and order seeds for spring. See the full October checklist for the month's other jobs.
Frequently asked questions
Why does my spinach always bolt?
Almost certainly heat — spinach bolts when days lengthen and temperatures rise. Sow in March–May and August–September only, keep soil moist, mulch, and grow bolt-resistant varieties. A shady spot extends the season by weeks.
Can I grow spinach in pots?
Yes — a pot at least 20 cm deep with rich multipurpose compost. Pots dry fast, so water daily in warm weather and move the pot into afternoon shade. Cut-and-come-again picking works exactly the same in pots.
Is spinach the same as chard?
No, though they are related. True spinach (Spinacia oleracea) is the fast cool-season crop in this guide. Chard and "perpetual spinach" (a chard type) are different plants that tolerate heat and keep producing all summer — a good backup if your climate defeats true spinach.
How do I store a big harvest?
Eat it fresh when you can — spinach wilts fast. For surplus, blanch leaves for 1–2 minutes, plunge into cold water, squeeze dry, and freeze in portions. Frozen spinach keeps for months and is perfect for cooking.
Related guides
- How to Grow Lettuce at Home: Beginner's Guide — the other great cut-and-come-again leaf crop
- Garden Soil Basics: Compost, pH and Feeding Made Simple — feed your hungry leaf crops properly
- Your First Vegetable Garden: A Complete Beginner's Guide — plan spinach into your first year
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