Composting celeriac scraps with worms
Scraps from celeriac, such as peels and tough pieces, can be added to your Bonter worm bin. Due to their dense and fibrous structure, these parts digest slower than softer types of vegetables. With the right preparation and moderation, however, they can be processed well into valuable compost.
Can celeriac go in your worm bin?
Yes, celeriac scraps can go in your Bonter worm bin, but they require some patience and attention. The tough peel and the fibrous structure of the bulb itself mean that breakdown proceeds slower than with, for example, leafy greens or fruit. They are not a favorite, but the worms and microbes will eventually process them, provided they are offered in limited quantities.
How much celeriac can you add?
Add celeriac scraps in moderation to your Bonter. Limit yourself to small quantities of peels and snippets per time and ensure they are well mixed with other, more easily digestible waste. Due to the slow breakdown, it is important not to add too much at once and to wait until previous additions have largely disappeared. Always combine with sufficient ‘brown’ material (cardboard, paper) for a good balance.
What to do instead? Alternatives & waste management
Because celeriac can go in the worm bin in limited quantities, you can compost small scraps perfectly well. Larger quantities or thicker, woody pieces are better used to make broth. This provides a delicious, savory flavor. A traditional outdoor compost heap is also a suitable place for celeriac scraps where they have more time to break down. Only discard scraps if there is truly no other useful destination.
A
B
C
A
B
C
A
B
C
Tips for safe celeriac composting
The most important tip for celeriac scraps is size reduction! Cut the peels and tough pieces as small as possible, preferably into snippets or small cubes less than 1 cm. This increases the surface area and helps the worms with the slow breakdown. Mix the celeriac scraps with other, faster-digesting waste and bury it under the top layer of the bedding material. Patience is needed, as you will continue to see the fibrous parts in the bin for a while. The advanced filtering system of Bonter prevents any odors from spreading.

I’m Mats, founder of Bonter, and I’m on a mission to make indoor composting effortless, ensuring sustainability becomes second nature in your home.
Join 340+ early adopters

Frequently asked questions about composting celeriac
Can the hard peels of celeriac go in the worm bin?
Yes, the hard peels of celeriac can go in the worm bin, provided they are cut or grated very small and added in moderation.
How quickly does celeriac decompose in the worm bin?
Celeriac, particularly the fibrous parts, decomposes relatively slowly in a worm bin. It takes longer for it to break down completely than with softer types of vegetables.
Do I need to cook celeriac before adding it to the worm bin?
No, it is not necessary to cook celeriac before adding it. Raw and finely prepared is fine and will eventually be processed by the worms and microbes.
Can the strong smell of celeriac be a problem in the worm bin?
Celeriac does not have an extremely strong smell like onions or garlic. It rarely causes odor problems in a healthy, well-functioning worm bin, partly thanks to the Bonter filtering system.
Will the fibrous remnants of celeriac harm the worms?
No, the fibrous parts of celeriac are not harmful to the worms, although they do digest more slowly. Make sure you cut them small to speed up the process.
Discover more
easy wins for your bin
See how effortlessly your vermicomposter handles common kitchen scraps. These items are favorites of your composting crew and simply transform waste into a valuable resource.