Winter Leek of Saint-Victor - Allium porrum
Winter Leek of Saint-Victor - Allium porrum
Allium porrum de Saint-Victor
Leek
Very poor germination Only about a third of the seeds sprouted
Thierry , 21/07/2025
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Description
The Winter Leek of Saint-Victor is an improvement of the Blue de Solaise. Like it, it is very hardy and performs perfectly in the face of extreme cold. It can remain in the ground during winter. Similarly, it has a blue-green violet foliage. Simply put, it is more resistant to leek moth. Its longer shaft remains very thick.
Its flesh is very tasty and suitable for all culinary variations.
Sow it from March to May to harvest it from October to March.
The leek or Allium porrum is a biennial herbaceous plant belonging to the Alliaceae family. Native to Central Asia, it was already known to the Egyptians 1500 years ago. Its foliage was then long and very thin. The Romans also appreciated it. Its appearance then resembled that of its cousin the onion with a very slender shaft and a well-rounded bulb. It is also known that in the Middle Ages, it had already been introduced throughout Europe.
The leek has long blue-green or dark green leaves that are wide and sheathing, forming together what is called the shaft, that is, the white part that resembles a stem. This shaft is the most sought-after part. White, its taste is very fine and corresponds to the buried part that has not benefited from light. At the end of the second year, it produces a stem topped with a spherical mauve umbel the size of a tennis ball, which has become the emblem of Wales.
This very hardy vegetable, some winter varieties can withstand temperatures to -15 (-4°F), can be sown for most of the year (February to August). Considered a winter vegetable, it can be harvested almost all year round. Leeks are rich in dietary fiber, which aids digestion. They are also rich in vitamins C and B, and in sulphur compounds with antioxidant properties. It is also reputed, like onions, to lower cholesterol levels in the blood, among other benefits.
It is good for health but also from a taste point of view: its flavour is halfway between that of an onion and an asparagus, which has led to one of its nicknames, the 'poor man's asparagus'. It is primarily the white shaft and the rootlets that are consumed. It is used in the preparation of many local dishes around the world. It is a key element of the traditional pot-au-feu, but it is also consumed in soups, quiches, cold in vinaigrettes, or even finely sliced raw in salads, etc. The Japanese are particularly fond of it: it can be found in many recipes such as sushi and sashimi or delicious sesame leeks.
Harvesting: Pick your leeks as required. Harvesting usually takes place between 5 and 8 months after sowing. Gently pull on the leek to avoid injuring or damaging the shaft. If you encounter difficulties in this operation, use a small spade a few centimeters from the desired leek and lever it out more easily.
Storage: You can store leeks for two weeks in the vegetable drawer of your refrigerator. They can be stored for almost 3 months in the freezer. Bag them after blanching them for a few minutes, rinsing them under cold water, and then carefully drying them.
The gardener's trick: associate leeks with carrots. The carrot fly dislikes leeks, and the leek fly does not fancy carrots! Tomatoes, lettuces, and strawberries are also good companion plants for leeks, but leeks dislike the presence of onions, as well as beets and beans.
To know if a leek needs to be watered, just observe its foliage: if it stands tall, everything is fine, it is not thirsty. If its foliage wilts and leans to the side, it probably needs a drink of water.
Harvest
Plant habit
Foliage
Botanical data
Allium
porrum
de Saint-Victor
Amaryllidaceae
Leek
Central Asia
Biennial
Planting and care
Leeks are considered winter vegetables. This is partly true, however there are a number of summer leeks. The leek's growth cycle is quite long and occurs in several phases.
Soil preparation: Leeks appreciate rich and deep soils that are highly enriched with organic matter. However, be careful as the soil must have been enriched several months in advance, as our vegetable fears recent amendments. It is best to choose a sunny location in a generally cool soil that you have previously loosened.
Sowing: Dig a furrow 2 cm (1in) deep and sow a small amount of seeds at a rate of one to two seeds every centimeter. Close the furrow with a special sowing soil and lightly compress with a rake. This operation is carried out from February to May undercover, depending on the climate (greenhouse, tunnel, etc.). Germination will take between fifteen days and three weeks. Once the plant has reached about 15 cm in height and the thickness of a pencil, it is now time to transplant. Before doing so, gently uproot the young plants and let them dry out on the ground in the shade for two days. This operation aims to remove the leek's scent and thus avoid attacks from the onion fly.
Transplanting: Before transplanting, it is necessary to trim the leek. 'Trimming' means cutting the roots 2 to 3 cm (1in) below the bulb and at the same time cutting the young leaves a few cm above the stem. The objective is twofold: removing the roots allows for better rooting by stimulating it, and cutting the leaves prevents excessive evaporation.
Then, prepare holes about 15 cm deep spaced 15 to 20 cm (6 to 8in) in all directions. Insert your young plants into them. The white part must be completely buried. Water generously with a watering can to close the holes around the leek stems. They need a nitrogen-rich soil. You can also place freshly mown grass between the rows. After a period ranging from fifteen days to a month, the plants grow and strengthen. It is then necessary to earth them up to keep the stems as much as possible protected from light so that they remain white and tender.
Overwintering: There are summer varieties and winter varieties depending on their hardiness and the period in which leeks should be sown. Sowing is done in autumn to be harvested in spring. This means that some of them will spend the winter outside. In regions with harsh winters, it is sometimes necessary to consider overwintering leeks, which means gathering them in a sheltered place away from the wind and planting them obliquely before transplanting them again in spring.
Seedlings
Care
Intended location
Planting & care advice
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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).
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 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.
The planting period indicated on our website applies to regions in USDA Zone 9a (East Coast and Midlands: Dublin, Wexford, Waterford, Kilkenny, Portlaoise). It will vary depending on where you live:
- On the west coast and in the north-west (Galway, Limerick, Sligo, Donegal, Westport), delay planting by 1 to 2 weeks in spring and bring it forward by 1 to 2 weeks in autumn compared to the dates given, preferably choosing periods without strong winds.
- In the inland hills and plateaus (Wicklow Mountains, Macgillycuddy’s Reeks, Connemara, Killarney), it is best to plant in spring (April–May) or autumn (September–October), avoiding periods of waterlogged soil in winter and strong winds, which pose the main risk to newly planted trees in these areas.
The flowering period indicated on our website applies to regions in USDA Zone 9a, such as the East Coast and Midlands, including Dublin, Wexford, Waterford, Kilkenny and Portlaoise.
This will vary depending on where you live:
- On the west coast and in the northwest (Galway, Limerick, Sligo, Donegal and Westport), it will be delayed by one to two weeks compared to the given dates, due to stronger Atlantic winds and less spring sunshine.
- In the inland hills and plateaus (the Wicklow Mountains, the Macgillycuddy's Reeks, Connemara and Killarney), flowering will be delayed by two to three weeks. Flowering mainly occurs between May and July, with the limiting factors being less frost and more of the excessive humidity, strong winds and lack of sunshine that are characteristic of these areas.
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