Easy to grow. Grow in seed trays, and plant out in 4-6 weeks. Sow the seed at a depth three times the diameter of the seed. Best planted at soil temperatures between 8°C to 30°C.
Space plants: 5 – 10 cm apart
Harvest in 25-34 weeks. Allow onions to dry before storing.
Compatible plants include Lemon Balm, Borage, Carrots, Beets, Silverbeet, Lettuce, and Amaranth.
Avoid growing close to: Peas, Beans
Onions come in a range of colours and shapes and sizes. Brown :- strong flavour and pungent. Usually good keepers for storage. White :- milder but still flavoursome. Keep fairly well. Red :- Mild, suitable to use raw in salads and sandwiches. Allow the seedlings to grow in strength before planting them out – usually 4 to 6 weeks is sufficient. When they are big enough to handle, you can plant out. They begin to resemble grass blades.
They don’t have to be in a greenhouse (though that would be ideal), any sheltered spot will do. The goal is to prevent against sudden variations of temperature, especially at night.
Onions can be bought as young plants (sets or seedlings) from garden shops/nurseries to plant straight into garden beds. Choose your variety based on your climate and the time of year, as some onions grow better in cooler weather.
Onion bulbs should sit on the surface of the soil. Do not cover. They will take six to eight months to mature. Onions are ready when the tops start to dry and fall over. Pull them and leave to dry for a few days. Store in a cool, dry airy place. Use a net bag or make a string by weaving the tops together.
Do onions need full sun?
Onions are one of the easiest vegetables to grow, so learning how to grow them is simple. Here are our top onion-growing tips: Grow onions in full sun with proper drainage. Coordinate your planting timeline based on the variety you want and your available daylight hours.
How much water do onion plants need?
Onions need about 1 inch of water per week, so if the weather is dry, you’ll need to water.
Do onions enjoy hot weather?
Onions are also temperature sensitive. Generally, they require cool weather to produce their tops and warm weather to produce their bulbs. They are frost-hardy, and you can sow them four weeks before the usual last frost date.
How do I know when it’s time to harvest my onions?
For full-sized bulbs, let onions grow and mature. They are ready to harvest when the bulbs are big and the tops begin to turn yellow and fall over. Pull them up, shake off the soil, and set them out to cure with the tops still on.
