Planting Onions (from seed) in a Raised Bed

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It’s mid April and time to plant out the Onions I grew from seed in January. It’s a fairly simple process of removing the onions from their modules and planting out in a hole in the soil.

There’s a few things you should know about transplanting onions:

  1. Prepare your raised beds with compost, either a) Dig a trench and add compost into it. Onions are shallow rooted so the roots will sit in the compost. OR b) Use the No Dig method and add to the top of the soil and rake it until it’s level with no clumps. The microorganisms and rain will take the nutrients into the soil.
  2. Plant your onions by removing from their cells, placing them out on the soil to find the spacing requirements. Then dig one hole per onion seedling to plant them in. Plant them in the soil from their modules and try not to disturb the roots. Plant level with the soil and back fill around the seedling with soil.
  3. Spacing – Give your onions room to breathe, when they get larger. Onions are shallow rooted but they don’t like being planted on top of one another. As a guide = Small onions – plant 3-4 inches apart, large onions – 4-6 inches apart.
  4. Water well so they settle into their new home!

Video – Planting Onion Seedlings in Raised Beds


The Onion Series – Grow from Seed.

Beginners Start Here: Grow Onions from Seed


The Onion Series – Grow from Sets

Beginners Start Here: Grow Onions from Sets

If you have grown Onions before but need more Growing Tips or help,choosing a variety to grow – Download my Free PDF ebook on The Essential Guide to Growing Onions from Sets.

Read the Onion Sets Planting Stages here:

1.Plant onion sets in cell trays first,

2.Plant Onion sets in the ground,

3.How to tell when your Onions are ready for harvest,

4.How to Harvest Onions & make your own Drying rack.


The Shallot Series

Shallots sprouting
Shallots sprouting

Want to try something different? Try growing Shallots, they produce side bulbs so you get more value for money and they are great for cooking with for a milder onion taste.

Plant Shallots in November in cell trays.

Check your Shallots for Signs of Disease.

Planting Shallots in Raised Beds in March



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About Me

Hi, I’m Tracey — vegetable grower, passionate learner, and firm believer that anyone can grow their own food. While I work as an account manager during the day, my spare time has been dedicated to growing vegetables in my back garden for the last 23 years.

What started as a hobby grew into a passion, and now I’m building a place where others can learn too. This is your veg-growing hub for practical advice, seasonal inspiration, beginner-friendly learning, and real gardening experiences from someone who’s grown through every success and setback.

Real gardening, real learning, real harvests.

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