How To Grow Onions From Onions

Written by: Lars Nyman

how to grow onions from onions

how to grow onions from onions

Welcome, green thumbs! If you've ever wondered how to grow onions from onions, then you're in the right place. Not only is it a fun and fulfilling project to tackle, but it's also an extremely practical one. After all, nothing beats the sweet satisfaction of cooking with homegrown veggies. In this article, we'll guide you step by step, ensuring you harvest the juiciest, most flavorsome bulbs you've ever tasted. Brimming with practical tips and expert insights, you'll soon realize that learning how to grow onions from onions isn't tricky at all, but an immensely rewarding journey. So, fasten your garden gloves and let's dig into this fragrant adventure together.

📝 Onion Growing Cheatsheet

Choose the Right Onion Variety

🔍 Select a variety suitable for your climate and taste preferences.

Prepare the Soil

🌱 Ensure loose, well-draining soil with added compost.

Planting Onions

  • 🌱 Plant onion sets 1 inch deep, 4-5 inches apart.
  • 💧 Water moderately, keeping the soil moist but not soaked.

Sunlight Needs

☀️ Onions thrive in full sun; provide at least 6 hours of direct sunlight daily.

Managing Weeds

🚫 Keep onion beds weed-free to maximize growth and nutrient absorption.


  • 💦 Water onions regularly, aiming for 1 inch of water per week.
  • 💧 Reduce watering two weeks before harvest to improve bulb formation.


🌾 Harvest onions when tops fall over naturally. Cure them in a dry, airy place for 2-3 weeks.

Storage Tips

🔒 Store cured onions in a cool, dark, and well-ventilated area for extended shelf life.

Enjoy the Fruits of Your Labor

😋 Use your homegrown onions in various delicious dishes!

Onions, a staple in a multitude of cuisines, are remarkably simple to cultivate in your own garden. Wouldn't you believe it if I told you that to grow an onion, all you need is another onion? You may, aptly enough, call this how to grow onions from onions, since you are practically rebirthing a new plant from an old one. It's like making a phoenix rise from its ashes!

Finding the Perfect Onion

Let's kick off our journey on how to grow onions from onions. The first step involves finding the perfect onion. Numerous onion varieties exist, so, consider which one you want to grow. Personally, I have had fantastic results with the smaller, pearl variety. Ensure that your chosen onion is fresh and firm. Avoid any that display signs of rot or mould.

Sprouting Your Onion

Cut the bulb into halves

The bulbous part of your onion is what you need. Slice it in half and ensure you retain the root end, the round hairy part. This half will play a vital role in your mission of delicately nurturing a fresh onion.

Place the root down into the pot

When you want to answer how to grow onions from onions, understand that light and water are pivotal. Place your onion halves root-side down in a pot full of moist soil. Onion likes full sunlight part of the day, so ensure that the pot's location gets about six to seven hours of daily sunlight.

Nurture Your Plant

Water the onion as soon as the top layer of soil appears dry. Remember not to overwater; onions dislike waterlogged soil. From my experience, watering two to three times a week works wonders. Within a few days, green shoots should emerge from the top of the bulb. Now, wait for your onion to grow.

"Patience is a gardener's great ally. You cannot rush the plants' growth."

Harvest Your Onion

Once the bulb is large, and the tops turn yellow or brown, your onion is ready to be harvested. Do not be in a rush - allow the soil to dry out completely before you gently remove the bulb. Brush off the excess soil, let the onion dry before storing it.

Repeat the cycle

And there you have it – a fresh onion right from your garden. But why stop there? The beauty of gardening - the cycle never really has to stop. Use this newly harvested onion, repeat the process and keep this circle of life going.

So there you go, the satisfyingly simple process of how to grow onions from onions. A beautiful blend of patience, persistence and green thumbs can make any kitchen garden thrive. And the joy you'll find in watching your food grow right in front of your eyes - that's simply priceless.

Frequently Asked Questions

1. What is the easiest way to grow onions from onions?

The easiest way is to use onion sets or baby onions, which are small immature onions you can plant directly into the ground.

2. When is the best time to plant onions?

Onions should be planted in early spring, as soon as the soil is workable.

3. How deep should I plant the onion sets?

Plant the onion sets about 1 inch deep in well-draining soil.

4. How much space do onions need?

Onions should be spaced about 4 to 6 inches apart in rows that are 12 to 18 inches apart.

5. Do onions need a lot of sun?

Yes, onions require full sun, preferably at least 6 hours of direct sunlight each day.

6. How often should I water onions?

Onions should be watered regularly, providing about 1 inch of water per week, especially during dry periods.

7. How long does it take for onions to grow?

Onions typically take around 90 to 120 days to mature, depending on the variety.

8. When should I harvest onions?

Onions are ready for harvest when the tops turn yellow and start to dry out. Carefully lift them from the ground and allow them to cure for a week or two in a dry, well-ventilated area.

9. Can I regrow onions from scraps?

No, it is not possible to regrow onions from kitchen scraps like onion bottoms or onion peels. These parts do not contain the necessary nutrients to produce new onions.

Growing onions from onions is a simple and satisfying process that can be easily accomplished by both novice and experienced gardeners. By following a few essential steps, you can propagate these flavorful bulbs in your own backyard. Start by selecting healthy and firm onions, removing their outer layers to expose the growing points. Then, place them in a well-prepared bed with loose soil and ample sunlight. Remember to keep the soil moist but not waterlogged, providing a nurturing environment for the onions to thrive. As the weeks pass, you will witness the magic of nature as new greens emerge and your onions steadily mature underground. Patience is key, dear friends, for a bountiful harvest awaits those who tend to their onion patch with love and care. So, roll up your sleeves, embrace the earth under your nails, and start this rewarding journey of onion cultivation. May your efforts be fruitful, and your meals be forever blessed with the rich flavors of homegrown onions.

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