The other day I was standing in the kitchen peeling onions for dinner when I noticed the little pile of papery skins building up on the counter.
Normally they would head straight for the trash.
But this time I paused and thought, “I wonder if the garden could use these?”
As it turns out, onion and garlic skins can actually be quite useful in the garden. These days I save them instead of tossing them away.
It’s a small habit, but it fits perfectly with the way I like to garden — simple, smart, and sustainable.
1. I Add Them to My Compost
One of the easiest things I do with onion and garlic skins is add them straight to my compost pile.
Like many other kitchen scraps, they break down over time and become part of the rich organic matter that feeds the soil.
Whenever I head out to the garden with my compost bucket, the onion skins usually come along for the ride.
2. I Sometimes Add Them Directly to the Soil
Another simple option is to add the skins directly to the soil around plants.
I usually crumble them slightly and tuck them into the top layer of soil where they will slowly decompose.
It’s not instant fertilizer, but over time it helps return organic matter back to the garden.
Onion skins tucked around lettuce plants where they will slowly break down.3. I Occasionally Make a Simple Onion Skin Tea
Sometimes I also make a mild garden tea using onion skins.
I place a handful of skins in a jar or container of water and let them soak overnight. The next day I use the water (1 :1 ratio) to give my plants a gentle drink.
It’s a simple way to make use of something that would otherwise end up in the trash.
Day 1 Day 2
Onion skins soaking in a jar. This infusion adds small amounts of minerals and helps the uptake of other minerals in the soil.
4. I’ve Even Used Them as a Mild Pest Deterrent
From time to time I scatter onion or garlic skins around plants that tend to attract pests.
The strong smell can discourage some insects from hanging around, especially when the skins are freshly added.
It’s not a magic solution, but in the garden I’ve learned that small natural tricks working together can make a difference.
And even if they don’t chase away a single pest, they will still break down and feed the soil — so nothing goes to waste.
πΏ The Grey-Haired Gardener Tip
One thing I’ve learned over the years is that the garden wastes very little.
What looks like kitchen scraps to us can still have value in the soil.
So these days I keep a small container in the kitchen where I drop onion skins, garlic skins, and other compost-friendly scraps. When it fills up, it heads straight out to the garden.
Simple habit… happy soil.
And sometimes that’s enough to trigger a little happy garden dance.
Simple • Smart • Sustainable
Using onion and garlic skins in the garden is a small step, but it’s part of a bigger idea — wasting less and giving more back to the soil.
Next time you peel an onion or garlic clove, consider saving those papery skins.
Your garden might appreciate them more than you think.
Try It in Your Garden
Do you save kitchen scraps for your garden?
I’d love to hear what works for you. Share your favourite garden recycling tips in the comments!
Happy Gardening!
The Grey-Haired Gardener
Grey hair, green thumb, garden savvy.
thegreyhairedgardener.blogspot.com