PlantSowGrow
How to grow Spinach (Giant Winter)
Spinacia oleracea
🥕 Vegetable
🌱 Grown each year
Large, dark leaves for salads and cooking. Sow in spring or late summer; late sowings crop through winter.
At a glance: Sow mid March to mid May, harvest from late April.
When to sow, plant and harvest
JanFebMarAprMayJunJulAugSepOctNovDec
Sow outdoors
Harvest
Timed for a typical UK garden (last frost mid-April). The app uses your own town's frost dates.
Growing Spinach (Giant Winter): what it needs
- Light
- Part shade · 6+ hours a day
- Watering
- Keep moist — dry soil makes it bolt
- Soil
- Fertile, well-drained soil
- Spacing
- 15 cm
- In pots
- Grows well in containers
- Feeding
- A general feed before sowing or planting
- Harvest
- About 45 days from sowing
- Hardiness
- USDA zones 3–9
- Difficulty
- Easy
Step by step
- Mid March – mid May · 4 weeks before the last spring frost
Sow Seeds Outdoors
Sow thinly in drills where they are to grow.
Or: Sow Outdoors (Autumn) (Late August – mid September · 9 weeks before the first autumn frost)
- 7–14 days after “Sow Seeds Outdoors” · Late March – early April
Check Germination
Seedlings should appear in 7–14 days. If sown outdoors, thin to 15 cm apart when big enough to handle.
- 31–52 days after “Check Germination” · Late April – mid May
Start Harvesting
Pick outer leaves regularly; the plant keeps producing.
- 60–90 days after “Start Harvesting” · Late June – late July
Finish and Clear
Clear the remains to the compost heap once cropping ends.
