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Untreated Ailsa Craig Onion - Ferme de Sainte Marthe seeds

Allium cepa Ailsa Craig NT
Onion, Common onion, Garden onion

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More information

A variety to be harvested in summer, good for storage but sensitive to cold. It is cultivated for its large bulbs of coppery yellow colour. Its firm flesh is sweet and juicy, and it is used raw or cooked in many dishes. Sowing period from February to April for a harvest 3 months later.  
Ease of cultivation
Beginner
Height at maturity
30 cm
Spread at maturity
20 cm
Soil moisture
Moist soil
Germination time (days)
8 days
Sowing method
Direct sowing, Sowing under cover
Sowing period February to April
J
F
M
A
M
J
J
A
S
O
N
D
Flowering time June to September
J
F
M
A
M
J
J
A
S
O
N
D
Harvest time July to September
J
F
M
A
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J
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N
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Description

The 'Ailsa Craig' NT Onion is a variety to be harvested in summer, with good storage but sensitive to cold. It is grown for its large yellow copper-coloured bulbs. Its firm flesh is sweet and juicy, and it is used raw or cooked in many dishes. Sowing from February to April for a harvest 3 months later.

There are around 900 species of onions, which are usually categorised by color: white, yellow, red, pink, or green. The onion originates from Central Asia, where it has been consumed for over 6000 years. Its presence is also attested in the tombs of the pharaohs as provisions. Its therapeutic and gustatory virtues were already recognised. The Romans later introduced the onion to Western Europe. It is worth noting that it was Christopher Columbus who introduced it to the Americas during his second voyage.

This vegetable, rich in sulphur compounds, causes tears as soon as it is cut. It is these same compounds that are responsible for its hypoglycemic properties. Among its other properties, onions are reputed 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 takes on a sweeter flavour.

Harvesting: to preserve your "storage" 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 should be harvested when the stems are completely dried up and folded down to the ground. Gently pull them out and let them dry for two to three days on the ground in the sun. After that, remove the excess dry 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 suffered any bruises to avoid rotting, which could contaminate your entire harvest. If the storage location is too warm, the onions will tend 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. They are actually best when fresh. In this case, the fresh leaves are also edible.

The gardener's tip: associate your onions with your 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.

Untreated or "NT" seeds come from plants grown conventionally (often with the use of pesticides), but they undergo no treatment after harvesting. These seeds are allowed in organic market gardening when organic seeds are out of stock.

 

 

Harvest

Harvest time July to September
Type of vegetable Bulb vegetable
Vegetable colour yellow
Size of vegetable Medium
Interest Flavour, Productive
Flavour Sweet
Use Cooking

Plant habit

Height at maturity 30 cm
Spread at maturity 20 cm
Growth rate normal

Foliage

Foliage persistence Evergreen
Foliage colour medium green
Aromatic? Fragrant foliage when creased

Botanical data

Genus

Allium

Species

cepa

Cultivar

Ailsa Craig NT

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. Just 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 sowings, add compost in autumn, and vice versa for autumn sowings, amend in late spring. Just before sowing, loosen and aerate the soil without turning it over.

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

Autumn sowings: Sow from August to October. If your winters are mild, sow indoors for transplanting into open ground from November. The onions will remain in the ground throughout winter and will be harvested in March. If your winters are harsher, transplant in February. Space each plant 10 cm (4in) apart and your furrows 20 cm (8in) apart. Sowing is not the only method of propagating onions; you can also directly plant bulbils in the soil. This is a fairly simple method that takes place in spring.

Regular tasks: Regularly hoe the soil. Avoid overwatering, as onions are sensitive to excessive moisture.

Seedlings

Sowing period February to April
Sowing method Direct sowing, Sowing under cover
Germination time (days) 8 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, Partial shade
Soil pH Any
Soil type Silty-loamy (rich and light), 130

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