Spinach Giant Winter
Spinach Giant Winter
Spinacia oleracea Géant d'Hiver
Spinach
Sown in autumn 2025. They established well, producing plants with large, fleshy leaves. I got at least 7 or 8 harvests from February to April.
Gabryel, 31/05/2026
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Description
The 'Winter Giant' Spinach is ideal for autumn cultivation; it is very productive and particularly hardy. Its large dark green leaves can be consumed both raw and cooked. It is a variety known as "short-day" spinach, which should be sown, preferably in the sun, from August to October for a harvest from October to January.
Traditionally mistreated by school catering services, spinach is undoubtedly the most dreaded vegetable by children. Yet, it is a tasty vegetable that can be prepared in a thousand ways: raw in spring salad, in Japanese fritters, quickly cooked in a wok or even in a savoury tart with small pieces of goat cheese.
Originating from Iran and belonging to the Chenopodiaceae family, like Beetroot and Swiss Chard, spinach is widely cultivated worldwide for its flavour and nutritional qualities. While the famous Popeye long praised its iron content, its remarkable vitamin B9 content is especially noteworthy.
Many spinach varieties require short or long days to prevent them from quickly going to seed. Each variety corresponds to a specific research area that should be respected: spring, autumn, winter, and even summer. Some varieties have spicy seeds, traditionally intended for spring or late autumn sowing. Thus, by carefully choosing your seeds, you can have this vegetable available all year round.
Spinach prefers rich, moist, and well-drained soils, particularly rich in nitrogen and potash. They thrive in winter sun and partial shade and even in full shade during the summer and in the hottest regions.
Harvest: Spinach is harvested leaf by leaf, according to their growth and needs. The leaves around the plant are cut, allowing the heart to continue developing and producing new leaves. The entire plant is only harvested when it shows the first signs of running to seed.
Storage: Spinach does not keep well in the refrigerator as it tends to become soft. It is best to consume it a few hours after harvesting. However, you can freeze it after blanching it for 3 minutes in salted boiling water.
Gardener's tip: Did you know spinach can be used as green manure? Sown in autumn at a rate of 30 grams per square metre, it can absorb and store the nitrogen in the soil. This preserves the nitrogen in the soil and prevents it from being washed away by winter rain. It's a great way to recycle a forgotten packet of seeds past its sell-by date!
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Spinach Giant Winter in pictures
Harvest
Plant habit
Foliage
Botanical data
Spinacia
oleracea
Géant d'Hiver
Chenopodiaceae
Spinach
Cultivar or hybrid
Annual
Planting and care
The germination of the spinach occurs at a temperature of around 16°C (60.8°F). The emergence usually takes about fifteen days.
Sowing is done directly in the ground (one to two months earlier under a polytunnel for early varieties), in the sun, in partial or shade, depending on your climate.
Follow the recommendations for the sowing period; otherwise, your plants may prematurely go to seed.
On fairly firm soil, lightly worked, make furrows spaced 25 to 30 cm (10 to 12in) apart, with a depth of one to two centimetres. Sow in rows, spacing the seeds 2 cm (1in) apart. After emergence, thin out by keeping only one plant every 10/15 cm (4/6in).
Since spinach is best when fresh, stagger your sowings over time to enjoy a longer harvest.
Cultivation:
Spinach is a fairly demanding vegetable, especially in nitrogen and potassium. It requires well-manured soil. It is advisable, preferably in autumn, to apply mature compost (about 3 kg per m2) by digging to a depth of 5 cm (2in) after having loosened the soil, as is the case for all vegetable crops. An application of nitrogen-based fertiliser such as "blood, fish and bone" is often welcome. It prefers neutral to slightly acidic soils (pH between 5.5 and 7).
Some spinach varieties are susceptible to downy mildew, a fungal disease in mild and humid weather. Make sure not to sow too densely so that the crop remains well-aerated. As a curative measure, you can spray a fungicide, but crop rotation remains the best prevention.
Regarding companion planting, spinach is a good neighbour that does not harm other vegetables. Its association is even known to benefit Cauliflower, Cabbage, Potatoes, and Radishes, enhancing their yields. Gertrude Franck, an exceptional gardener, used to interplant a row of spinach between each row of vegetables, using it both for cooking and as green manure.
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Hardiness is the lowest winter temperature a plant can endure without suffering serious damage or even dying. However, hardiness is affected by location (a sheltered area, such as a patio), protection (winter cover) and soil type (hardiness is improved by well-drained soil).
The flowering period indicated on our website applies to countries and regions located in USDA zone 8 (France, the United Kingdom, Ireland, the Netherlands, etc.)
It will vary according to where you live:- In zones 9 to 10 (Italy, Spain, Greece, etc.), flowering will occur about 2 to 4 weeks earlier.
- In zones 6 to 7 (Germany, Poland, Slovenia, and lower mountainous regions), flowering will be delayed by 2 to 3 weeks.
- In zone 5 (Central Europe, Scandinavia), blooming will be delayed by 3 to 5 weeks.
In temperate climates, pruning of spring-flowering shrubs (forsythia, spireas, etc.) should be done just after flowering.
Pruning of summer-flowering shrubs (Indian Lilac, Perovskia, etc.) can be done in winter or spring.
In cold regions as well as with frost-sensitive plants, avoid pruning too early when severe frosts may still occur.
The planting period indicated on our website applies to countries and regions located in USDA zone 8 (France, United Kingdom, Ireland, Netherlands).
It will vary according to where you live:
- In Mediterranean zones (Marseille, Madrid, Milan, etc.), autumn and winter are the best planting periods.
- In continental zones (Strasbourg, Munich, Vienna, etc.), delay planting by 2 to 3 weeks in spring and bring it forward by 2 to 4 weeks in autumn.
- In mountainous regions (the Alps, Pyrenees, Carpathians, etc.), it is best to plant in late spring (May-June) or late summer (August-September).
The harvesting period indicated on our website applies to countries and regions in USDA zone 8 (France, England, Ireland, the Netherlands).
In colder areas (Scandinavia, Poland, Austria...) fruit and vegetable harvests are likely to be delayed by 3-4 weeks.
In warmer areas (Italy, Spain, Greece, etc.), harvesting will probably take place earlier, depending on weather conditions.
The sowing periods indicated on our website apply to countries and regions within USDA Zone 8 (France, UK, Ireland, Netherlands).
In colder areas (Scandinavia, Poland, Austria...), delay any outdoor sowing by 3-4 weeks, or sow under glass.
In warmer climes (Italy, Spain, Greece, etc.), bring outdoor sowing forward by a few weeks.