How To Grow Onions

Onions are one of the easiest vegetables to grow in your garden. They are a must-have in every kitchen, and growing them is a great way to have a fresh supply all year round. Here are some tips on how to grow onions.

Choosing the Right Variety of Onion

Before you start growing onions, it is important to choose the right variety. There are many types of onions available, like red onions, white onions, and yellow onions. Choose the variety that you like the most and that grows well in your area.

Planting Onions

Onions grow well in well-drained soil. They prefer a pH between 6.0 and 6.8. You can plant onions from seeds, sets, or transplants. Seeds take longer to grow, but they are cheaper. Sets are small onion bulbs that are easy to plant, but they are more expensive. Transplants are ready-to-plant onion seedlings, but they are not always available.

Preparing the Soil

Before planting onions, it is important to prepare the soil. Add compost or well-rotted manure to the soil. This will improve the soil structure and provide the necessary nutrients for the onion plants. Onions prefer a soil that is rich in organic matter.

Planting Depth

Plant onion sets or transplants about 1 inch deep, and 4-6 inches apart. If you are planting from seeds, plant them about ΒΌ inch deep. Onions prefer to be spaced about 4-6 inches apart.

Watering Onions

Onions need regular watering. They prefer to be watered deeply, but not too often. Water your onions once a week, unless there is rainfall. Onions grow well in well-drained soil, so make sure to water them in the morning, so the soil has time to dry out during the day.

Fertilizing Onions

Onions need to be fertilized regularly. Use a balanced fertilizer, like a 10-10-10. Apply the fertilizer every 3-4 weeks, starting when the onions are about 6 inches tall.

Controlling Weeds

Onions do not like competition from weeds. Keep the area around your onions free of weeds, and use mulch to prevent weeds from growing.

Harvesting Onions

Onions are ready to harvest when the tops start to turn yellow and fall over. Carefully dig up the onions and let them dry in the sun for a few days. Once the onions are dry, cut off the tops and store them in a cool, dry place.


Q: How often should I water my onions?

A: Onions need to be watered once a week, unless there is rainfall.

Q: What is the best fertilizer for onions?

A: A balanced fertilizer, like a 10-10-10, is the best fertilizer for onions.

Q: How do I know when my onions are ready to harvest?

A: Onions are ready to harvest when the tops start to turn yellow and fall over.


Growing onions is easy and rewarding. By following these tips, you can have a fresh supply of onions all year round. Choose the right variety, prepare the soil, plant at the right depth, water and fertilize regularly, control weeds, and harvest at the right time. Happy gardening!