Spinach English Winter Giant

Spinach is a cool-season leafy green that loves the milder months in most parts of Australia. Whether you’re after tender baby leaves for salads or mature foliage for cooking, spinach is a quick-grower that suits both beginners and seasoned gardeners alike.

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🧺 Sowing: Trays vs. Direct

You’ve got two main options when it comes to planting spinach: sowing direct into the garden, or starting off in seed trays. Both have their perks, and the choice often depends on your space, soil, and the season.

Sowing Direct:

This is the most common method, especially for home gardeners wanting a fuss-free patch.

• Best for: Raised beds, well-prepared ground, or large containers.
• How: Sow seeds about 1cm deep and 3-5cm apart in rows. Once seedlings are up, thin them to 10-15cm apart.
• When: In most of Australia, sow in autumn and early winter (March to August), when the weather is cool and stable.

✅ Pro tip: Direct sown spinach usually establishes quicker and sends down a stronger taproot, making the plants more drought tolerant.

Sowing in Trays:

Tray sowing gives you more control—especially handy if your soil’s too warm, patchy, or prone to pests like slugs.

• Best for: Starting in a protected spot before transplanting.
• How: Sow into punnets or plug trays, one seed per cell. Keep moist and cool—spinach dislikes heat at germination.
• When: Autumn through winter. In warmer areas, start trays in a shaded or cool area.

🔁 Transplant when seedlings have 3–4 true leaves, spacing them around 10–15cm apart.

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🧂 Seed Pre-Treatment: Is It Necessary?

Spinach seeds have a hard seed coat and can sometimes be slow to germinate, especially in warm weather.

💧Pre-soaking tip: Soak the seeds in room temperature water for 6–12 hours before sowing. This softens the coat and encourages even germination.

You can also chill pre-soaked seeds in the fridge for a couple of days to mimic natural cold exposure—this trick can help boost success in warmer climates.

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🪨 Soil & Position

Spinach thrives in rich, moisture-retentive soil with plenty of organic matter.

• Soil: Loose, fertile, and neutral to slightly alkaline (pH 6.5–7.5). Work in compost or well-rotted manure before planting.
• Drainage: Must be free-draining—waterlogging leads to root rot.
• Position: Full sun in winter, part shade in spring/autumn. In warmer regions, protect from harsh afternoon sun to stop early bolting.

🌞 Remember: Spinach is a cool-season crop and tends to bolt (go to seed early) in warm or fluctuating temps.

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🪴 Care & Maintenance

Caring for spinach is quite straightforward, but consistency is key.

Watering

Keep soil evenly moist—don’t let it dry out. Mulching helps retain moisture and keeps roots cool.

Feeding

A light dose of liquid seaweed or fish emulsion every few weeks keeps plants lush and growing.

Mulching

Apply a layer of straw or sugarcane mulch to suppress weeds and regulate soil temperature.

Thinning

Thin seedlings early so they’re not crowded—good airflow helps prevent fungal issues.

Bolting Watch

If days suddenly get warmer or plants dry out, spinach may bolt. Look for tall flower stalks forming early—harvest leaves quickly if you see this!

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🌸 Companion Planting Guide

Spinach plays nicely with many other crops and can be squeezed between rows of slower-growing veggies.

Great companions:

• Strawberries – mutually beneficial spacing and light sharing.
• Radish – fast-growing and breaks up the soil.
• Lettuce – similar needs and good intercropping partner.
• Cabbage family (broccoli, cauliflower) – shade spinach as they grow.

Avoid:

• Potatoes – may compete for nutrients.
• Fennel – tends to inhibit growth of many plants, including leafy greens.

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✂️ Harvesting

Spinach is ready to pick in as little as 5–7 weeks from sowing, depending on conditions.

Harvesting Tips:

• Pick outer leaves regularly when they’re about 10–15cm long.
• Leave the central crown intact so the plant keeps producing.
• For baby spinach, harvest the whole plant when young (around 4 weeks).

🌿 Frequent picking encourages more leaf growth and delays bolting.

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🐛 Common Issues & Fixes

Problem	Symptoms	Fix
Bolting	Tall flower stalks, bitter leaves	Plant earlier in the season; keep well watered and shaded
Slugs & Snails	Holes in leaves, slime trails	Use beer traps, crushed eggshells, or copper tape around beds
Downy Mildew	Yellow spots on leaves, grey fuzz	Improve airflow, water early in the day, avoid overhead watering
Leaf miners	Tunnels or squiggly lines in leaves	Remove affected leaves, cover with insect netting
Poor germination	Sparse or patchy seedlings	Pre-soak seeds, keep soil cool, use shade cloth in warmer climates

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🌼 Seed Saving Guide

If you’ve let a few spinach plants bolt, you’re well on your way to seed saving!

Steps for Saving Spinach Seeds:

1. Let plants flower and fully mature – male and female flowers grow on different plants. You’ll need at least a few plants to ensure pollination.
2. Pollination – wind-pollinated, so let multiple plants grow together for best results.
3. Seed development – seed heads turn brown and dry on the plant.
4. Harvesting – once dry, cut whole plants and hang upside down in a dry, airy place over a drop cloth.
5. Threshing – rub seed heads between your hands to release seeds.
6. Cleaning – winnow or use a fine sieve to remove debris.
7. Storage – store in an airtight container in a cool, dry place. Label with variety and date.

🧊 Pro tip: Spinach seeds remain viable for 2–3 years if kept in good conditions.

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🌱 Final Thoughts

Spinach is one of those classic greens that fits beautifully into almost any garden—even tucked in between other veggies or in pots near the kitchen door. With the right timing, regular picking, and a little attention to watering, you’ll enjoy an abundant harvest through the cooler months.

Don’t be discouraged if a batch bolts early or struggles to germinate—it’s all part of learning what works best in your own patch. Once you find that rhythm, spinach becomes a trusty staple, not just in the garden but on the dinner table, too.

🌿 Happy growing—and may your leaves be lush and plentiful!

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