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Growing Onions Vertically On The Windowsill


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Apr 2, 2010
How nice would it be to just be able to pluck fresh green onions from the soil whenever you need them? Nothing beats fresh onions for your salads, dips or soup. But how can you ensure a supply of fresh onions at hand all the time?
Sure, onions are available all year round from the supermarket, but they are hardly fresh and there’s almost always no way to know for sure where they came from.

Gardeners of course will simply grow them but some simply have problems with available space.

I came across an image of spring onions grown vertically on the windowsill, using a common 5 Liter PBS bottle, which I thought was a practical, space-saving and green way to grow onions. I posted the image on our Facebook Page and a few people asked how it was done…

…and since I was curious myself, I did a bit of research and this is what I found:

FIRST, you need a planting vessel:

NEXT, you need to remove the neck of the bottle then cut holes around it. You can use a scissor or a heated metal tool to make the holes. Make sure the holes are just the right for the onion bulbs.

NEXT, fill the bottle with layers of onion sprouts and soil.

Keep adding layers until you reach the top of the container.

NEXT, water it…

AND FINALLY, set it on your windowsill…

And watch daily as your onions grow…

In no time, you’ll have something like this:

So the next time you want to add some garnish to your food, sweet spice to your soup, to whip up a savory dish or to make a nice, crunchy salad, all you’ll need to do is pluck some from your vertical onion garden.
And you don’t even have to worry about storing them.


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Apr 11, 2010
Very interesting with starters. Seeds would need lotsa rotation and 120 days.

I am seed starting my first this week.
Will plant 3-400 this season in three waves; early & midsummer harvest + late fall big finish.
Ran out of my OG onions last week, a complete and total pisser.
OG local grown are $3.99 per pound.