Add soil or growth mix into the grow bag / container
Ensure the soil you are adding is enriched with a lot of manure or compost.
Add any additional organic fertilizers if required
Soak the onion seeds in water for one day.
Drain and keep them in the open for the next 2-3 days.
Later, sow the seeds in the soil in a tray
These have to be 15 cm apart.
So the bulbs have enough space to grow and not hinder each other’s growth
Watering the onion cutting helps it adapt to its new environment and grow roots faster.
Give your onion enough water that the soil is damp to the touch, but not soaking wet.
Fertilizing your onion plant regularly helps it grow large, healthy bulbs.
Spray the onion plant at least twice a month with a nitrogen-rich fertilizer until the onion plant's bulb starts to poke from the soil
Onions thrive in soil with a high nitrogen content.
Onions are very prone to foliar diseases and its bulf rots. It is because of a bacterial infection and it reduces the bulb quality.
Harvest your onions when the sprouts are 3 inches (7.6 cm) high.
You can wait longer to allow the bulb to grow bigger, but once it reaches 3 inches, you can dig out the onion, clean it, and use it.