Your Complete Guide to Planting Onions

Growing onions may seem difficult, but you can use two easy methods to achieve it. Follow our guide and your culinary garden will be complete.
Your Complete Guide to Planting Onions

Last update: 29 November, 2022

If you’re thinking of planting and growing onions, we’re going to tell you how to do it. You’ll quickly realize that you don’t have to be a gardening expert to produce this star vegetable and the main ingredient in countless recipes.

So that you can have your onions and eat them, we’re going to teach you how to plant them with or without seeds. Choose the best and easiest method for you. Ready to follow our guide? Keep reading, you won’t be disappointed!

Planting onions: why you should give it a go!

Before we get into how to plant onions, we want to delve into why you should plant them. The first benefit is that you’ll have easy access to a supply of the most consumed vegetables in the world. Every time you need to prepare a dish containing this ingredient, you can simply take it from your garden. Equally, you’ll have a fresh, organic, and homegrown product.

Moreover, an onion is a source of healthy minerals, trace elements, and vitamins. Its composition makes it an ally for good circulation, eliminating body fluids, and preventing digestive problems. It also helps to purify the body and improve respiratory health.

Planting onions without seeds

Planting your own onions is ideal if you use this vegetable a lot.
Planting your own onions is easy and cheap. It also ensures you have a regular supply. 

It doesn’t matter if you don’t have onion seeds, you can grow them from tubers. The only thing you’ll need are pots about 20 centimeters deep, tubers and fertile soil.

Step-by-step guide to growing onions

Get started by following the steps outlined below:

  • Make sure your pots have good drainage holes. If not, carefully create these with the help of a sharp object.
  • Place the substrate inside the pot.
  • Cut one of your onions at the base, leaving about three centimeters. This piece contains the onion buds, which will facilitate its growth.
  • Place the cutting horizontally in the soil and cover it with more soil (four to five centimeters).
  • Put your pot in a place where it’ll get a good amount of natural light and water it frequently. Take care not to over water it though, and ensure it doesn’t become waterlogged.
  • After 15 days you’ll be able to see the first shoots.
  • When all the shoots develop, transplant them with their roots intact. Soak the soil first to make this process easier.
  • Plant the shoots in a larger space, making sure they’re spaced 8-9 centimeters apart. For its part, the root should be about four centimeters deep.
  • After four months, you can start harvesting your produce.

How to plant onion seeds?

Onions can also be grown from their seeds. You can buy these at a nursery or from a gardening store. Its reproduction is simple, but it requires other elements such as coconut fiber and special soil.

Step-by-step guide to planting onion seeds:

  • Prepare pots with good drainage holes.
  • Add the substrate to the inside of the pot.
  • Mix the onion seeds with coconut fiber and spread the result over the substrate.
  • Water the pot to ensure a good level of humidity.
  • Wait a week and see your seeds sprout.
  • From then on, provide good light and constant watering so that you produce healthy onions.
  • Wait a couple of months to harvest your produce and enjoy your work!
If you have a garden at home, why not grow other vegetables too?
If you have a garden at home, why not grow other vegetables too?

Providing basic care for your onion plant

Taking care of your onion plant is simple. As we mentioned before, it simply requires seven or eight hours of natural sunlight each day.

Additionally, you’ll have to plant your onions in a substrate that’s rich in organic matter and minerals and use a pot with good drainage. Irrigation is another fundamental aspect, since this plant requires a lot of water, but remember, excess water can damage it.

Finally, if you don’t have a garden, make sure that the pots you use are very deep, so that the bulb can grow properly.

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All cited sources were thoroughly reviewed by our team to ensure their quality, reliability, currency, and validity. The bibliography of this article was considered reliable and of academic or scientific accuracy.

  • Cebolla. Verduras y hortalizas. Fundación Española de la Nutrición.