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Rouge foncé de Brunswick Red Onion - Allium cepa

Allium cepa Rouge foncé de Brunswick
Onion, Common onion, Garden onion

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Variety forming dark purple tunica bulbs, slightly flattened spherical at the base and resembling a ripe fig. Very hardy and late, it is easily cultivated in regions north of the Loire. Sowing to be planned from late February to April for a harvest in August and September.
Ease of cultivation
Beginner
Height at maturity
30 cm
Spread at maturity
10 cm
Soil moisture
Moist soil
Germination time (days)
18 days
Sowing method
Direct sowing, Sowing under cover
Sowing period February to April
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Harvest time August to September
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Description

The Brunswick Dark Red Onion forms dark purple, slightly flattened spherical bulbs with a fig-like appearance. Very hardy and late-maturing, it is easily grown in regions north of the Loire River. With its beautiful color, this onion is unmatched in enhancing the taste and color of all types of composed salads. Its flavor is both subtle and pungent, and when picked young and still green, it can be used in confits or pickles and pairs perfectly with cold meats. It can be consumed raw or cooked. You can sow the Brunswick Dark Red Onion from late February to April and harvest it in August and September. As it can be stored for several months, you can enjoy it for a long time.

The onion is a plant cultivated as a vegetable and a condiment. It can be consumed raw, cooked, or pickled. It is used in salads, soups, pissaladières, or cooked with cheese or charcuterie. The onion is a biennial herbaceous plant with cylindrical, hollow stems and flower stalks. The fleshy bulb is consumed, and sometimes the stems are used like chives. The term "onion" is also used for all flowering bulbs. In the second year, it produces umbel-shaped flowers that will form seeds. Some varieties do not produce flowers but instead produce aerial bulblets.

There are around 900 species of onions, which are commonly categorized by color: white, yellow, red, pink, or green. The onion is native to Central Asia, where it has been consumed for over 6000 years. Its presence is also documented in the tombs of pharaohs as a food supply. Its therapeutic and gustatory virtues were already recognized. The Romans later introduced the onion to Western Europe. It is worth noting that Christopher Columbus introduced the onion to the Americas during his second voyage.

This vegetable, rich in sulphurous compounds, causes tears when cut. It is these same compounds that are responsible for its hypoglycemic properties. Among other properties, the onion is known to reduce cholesterol levels in the blood and lower blood pressure. Rich in vitamins A, B, C, and minerals, it is often more digestible when cooked and develops a sweeter taste.

Harvesting: To keep your onions for as long as possible, it is necessary to harvest them under good conditions. First, make sure you have two to three days of good weather ahead. Onions are ready to harvest when the stems are completely dried out and lying on the ground. Gently pull them out and let them dry for two to three days on the ground in the sun. Afterward, remove the excess dried soil by lightly rubbing them. Spring sowings are harvested in July-August to be consumed in autumn and winter. Autumn sowings are harvested in March to be consumed in spring and summer.

Storage: If the condition of the stems allows, you can braid them and hang the bundles. Otherwise, place your onions on racks in a dark, cool, dry, and well-ventilated place to prevent them from rotting. Check beforehand that they have not been bruised to avoid rot that could contaminate your entire harvest. If the storage location is too warm, the onions may start to sprout. They can be stored for 5 to 7 months under good conditions. Of course, you can also consume your onions as you need them. Fresh onions are even better. In this case, the fresh leaves are also edible.

Gardener's tip: Associate your onions with carrots. Onions repel carrot flies, while carrots moderate attacks from onion flies. Onions like the company of beets, strawberries, and lettuces. However, they hinder the growth of broad beans, peas, and beans.

Harvest

Harvest time August to September
Type of vegetable Bulb vegetable
Vegetable colour red
Size of vegetable Small
Interest Flavour, Nutritional value, Colour, Productive
Use Cooking

Plant habit

Height at maturity 30 cm
Spread at maturity 10 cm
Growth rate normal

Foliage

Foliage persistence Deciduous
Foliage colour dark green
Aromatic? Fragrant foliage when creased

Botanical data

Genus

Allium

Species

cepa

Cultivar

Rouge foncé de Brunswick

Family

Alliaceae

Other common names

Onion, Common onion, Garden onion

Origin

Cultivar or hybrid

Annual / Perennial

Biennial

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Planting and care

Soil preparation: Onions thrive and grow in all types of soil, preferably light ones. Simply avoid sowing too soon after amending the soil. Onions also dislike overly wet soil, so moderate watering is necessary. Depending on the variety or your own preferences, you can sow in spring or autumn. For spring sowing, compost in autumn, and vice versa for autumn sowing, amend in late spring. Just before sowing, loosen and aerate the soil without turning it over.

Spring sowing: Sow directly in open ground from late February to May. Start by digging a furrow 2 cm (1in) deep, then sow thinly. Close the furrow by lightly tamping it down with a rake. Moisten the soil immediately afterwards. Germination occurs in about 18 days. When the plants reach 5 cm (2in), thin them out, keeping only the strongest ones. Leave a 10 cm (4in) space between the different plants. Space your furrows 20 cm (8in) apart.

Autumn sowing: Autumn sowing can be done from August to October. Sow indoors for transplanting to open ground from November onwards if your winters are mild. The onions will remain in the ground throughout winter and will be harvested in March. Transplant in February if your winters are harsher. Space each plant 10 cm (4in) apart and your furrows 20 cm (8in) apart. Sowing is not the only method of onion propagation: you can also directly replant bulblets in the soil. This is a fairly simple method that takes place in spring.

Regular tasks: Regularly weed. Do not overwater, as onions are sensitive to humidity.

 

Seedlings

Sowing period February to April
Sowing method Direct sowing, Sowing under cover
Germination time (days) 18 days

Care

Soil moisture Tolerant
Disease resistance Good
Pruning No pruning necessary

Intended location

Type of use Vegetable garden
Hardiness Hardy down to -29°C (USDA zone 5) Show map
Ease of cultivation Beginner
Soil light
Exposure Sun
Soil pH Any
Soil type Silty-loamy (rich and light), 130

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