Maincrop bulb onion, dark brown skin and firm globe shaped bulbs.
The juice of the plant is used as a moth repellent and can also be rubbed onto the skin to repel insects.
The growing plant is said to repel insects and moles. A spray made by pouring enough boiling water to cover 1kg of chopped unpeeled onions is said to increase the resistance of other plants to diseases and parasites.
A yellow-brown dye is obtained from the skins of the bulbs.
Prefers a sunny sheltered position in a rich light well-drained soil.
Plants are perennial but the cultivated forms often die after flowering in their second year though they can perennate by means of off-sets. The onion was one of the first plants to be cultivated for food and medicine.
Onions grow well with most plants, especially roses, carrots, beet and chamomile, but they inhibit the growth of legumes. This plant is a bad companion for alfalfa, each species negatively affecting the other.
Early sowings can be made in February in a greenhouse to be planted out in late spring. The main sowing is made in March or April in an outdoor seedbed, this bed must be very well prepared.
Leaves - raw or cooked. There are some cultivars, the spring onions, that have been selected for their leaves and are used in salads whilst still young and actively growing - the bulb is much smaller than in other cultivars and is usually eaten with the leaves. By successional sowing, they can be available at any time of the year. Flowers - raw. Used as a garnish on salads. The flowers are somewhat dry and are less pleasant than many other species.The seeds are sprouted and eaten. They have a delicious onion flavour