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Organic Noordhollandse Bloedrode Red Onion - Allium cepa

Allium cepa Noordhollandse Bloerode Bio
Onion, Common onion, Garden onion

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Sop, 09/03/2024

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'Noordhollandse Bloedrode' Onion is an excellent long-day type variety from Holland. It produces large, slightly flattened bulbs with shiny dark red skin. This is a very tasty variety that stores particularly well. Sow from March to May and harvest from August to September. Organic seeds.  
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 May, August to September
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Harvest time April to September
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Description

'Noordhollandse Bloedrode' Onion is an excellent long day type variety from Holland. It produces large, slightly flattened bulbs with shiny dark red skin. A very tasty variety that stores particularly well. Sow from March to May and harvest from August to September.

The onion (Allium cepa) is a popular herbaceous biennial vegetable (grown as an annual) belonging to the Fabaceae family alongside chives, garlic and leeks. It is grown for its edible bulb and occasionally for its stalks. It is thought to be native to central Asia, where it has been consumed for over 6000 years. Traces of onions have also been found in Ancient Egyptian tombs. They were introduced to Western Europe much later by the Romans, then to the Americas during Christopher Columbus’s second voyage.

Bulb onions can be grouped into 3 main categories, based on the colour of their bulb:

- Yellow onions: sweet flavoured, generally the best type for storing and cooking

- White onions: fairly mild-flavoured, perfect for eating raw

- Red onions: sharp yet sweet flavour and bright colour, delicious grilled, in salads or in sandwiches

Spring onions are regular bulb onions (often white) that are harvested early, when the bulbs are still immature. If they are harvested prior to bulbing, they will often be referred to as green onions. Scallions are cultivars selected to produce a long, slender white shank rather than a bulb. Bunching onions or Japanese onions are a different species altogether (Allium fistulosum). All are fairly similar in flavour and can be substituted in recipes if need be.

Onions are an excellent source of minerals and vitamins A, B and C. They are known for their ability to reduce “bad” cholesterol and lower blood pressure. They develop a sweeter flavour and are easier to digest when cooked. To avoid eye irritation when preparing onions, peel or chop them under the tap or in a bowl of water.

Harvesting: Harvest spring onions… in the spring, when the leaves are still green. Mature bulb onions are harvested in the summer when the onions tops are completely dried out and folded over. Gently lift the bulbs, brush off any excess soil and leave them to dry in the sun for 2-3 days.

Storage: Onions will keep for several months in the right conditions. Cut off the leaves and store the onions in a dark, cool, dry and airy place. If the leaves are strong/long enough, they can be braided together to form attractive bunches and hung from the ceiling. Before storing, check for bruising as it only takes one rotten bulb to contaminate the whole crop.

Good to know: onions and carrots are excellent companion plants as onions repel carrot fly. Onions can also be successfully grown alongside beets, strawberries and lettuce. Avoid growing onions too close to members of the Fabaceae family.

NB. Organic seeds (in French "AB" for "Agriculture Biologique") are produced from plants that aren't treated with phytosanitary products (insecticides, weed killers). The seeds do not undergo post-harvest treatment. They carry the AB label and are approved by Ecocert, an independent structure.

Harvest

Harvest time April to September
Type of vegetable Bulb vegetable
Vegetable colour red
Size of vegetable Medium
Fruit diameter 6 cm
Interest Flavour, Nutritional value, Colour, Productive
Flavour Sugary
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

Noordhollandse Bloerode Bio

Family

Alliaceae

Other common names

Onion, Common onion, Garden onion

Origin

Cultivar or hybrid

Annual / Perennial

Biennial

Product reference44231

Planting and care

Soil preparation:

Onions will grow in most types of soil, preferably light and well-drained. Onions are susceptible to excess nitrogen: avoid growing onions on a recently fertilised plot after green manures or vegetables from the Fabaceae family (beans, peas, broad beans). Wait about five years before returning onions to the same plot.

Spring sowing: Coloured onions (yellow and red) and some early white varieties are directly sown from February to April (or in the autumn in milder climates). Lightly sow in furrows, about 2 cm deep, with 20 cm between each row. Gently cover with soil and water. Germination takes about 18 days. The seedlings must be thinned out when they are approximately 5 cm tall (about two months after sowing). Keep one plant every 10 cm on average. Harvest during the summer months.

Autumn sowing: White onions in seed trays or pots are sown in late summer (August-September)—transplant one month later in milder climates or in late winter elsewhere (February). Allow 20 cm between rows and 10 cm between each plant. White onions are then harvested in the spring.

Care: Hoe regularly, especially at the beginning. Avoid mulching, as this can cause the bulbs to rot. Onions are sensitive to excessive humidity; watering should be kept to a minimum, mainly during sowing and transplanting.

1
7,50 € Bag
17
14,50 € Each
6
19,50 €

Seedlings

Sowing period February to May, August to September
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 léger
Exposure Sun
Soil pH Any
Soil type Silty-loamy (rich and light), 130
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