Can tomato go in your worm bin?
Yes, tomato scraps can go in your Bonter worm bin, but in moderation. They are rich in water and contain acids, which in large quantities can affect the pH and moisture balance of the bin. Furthermore, tomato waste and seeds can potentially attract fruit flies, especially if not well covered. Therefore, add tomato scraps sparingly and follow the tips for the best results in your Bonter.
How much tomato can you add?
Add tomato scraps in moderation, for example, the scraps of one or two tomatoes at a time, as part of a diverse feeding. Always balance the addition of tomato with a generous amount of dry, carbon-rich material (such as shredded cardboard or paper) to absorb the extra moisture and keep the structure airy. Monitor the bin to see how the worms and microbes process the tomato before adding more. Too much can cause problems.
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What to do instead? Alternatives & waste management
Because tomato can go in the worm bin in moderation, you don’t have to throw away small scraps. Do you have an excess of tomatoes that are no longer edible? You could consider processing them into a large batch of tomato sauce or soup that you freeze – a classic way to prevent waste. An outdoor compost heap is also an option for larger quantities. Only discard scraps if there is truly no other destination for them. Always minimize food waste where possible.
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Tips for safe tomato composting
Cut tomato scraps (peels, seed ribs) into smaller pieces to speed up decomposition. Optionally prick open whole, spoiled tomatoes. Mix tomato with sufficient dry bedding material; this is essential to manage moisture and discourage fruit flies. Always bury the tomato scraps well under the top layer. Tomato seeds can survive and later sprout in the compost, but this is not harmful. Ensure good air circulation in the bin (which the Bonter promotes with its filter) to prevent odors, although too much wet waste can still smell musty.
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Frequently asked questions about composting tomatoes
Can tomato seeds go in the worm bin?
Yes, tomato seeds are not harmful to the worms and can simply be composted in the worm bin. They may survive and later sprout in the produced compost.
Do tomatoes attract fruit flies in the worm bin?
The sweetness and moisture of tomatoes can attract fruit flies. You can largely prevent this by always burying the tomatoes well under a layer of bedding material and limiting the quantity.
Can I add many tomatoes to my Bonter at once?
No, it is better to add only small quantities of tomato scraps at a time. Due to their moisture and acidity, large quantities can disrupt the balance in the bin. Always balance them with sufficient dry material.
Is the peel of tomatoes a problem for the worms?
The peel of tomatoes is somewhat tougher than the flesh and therefore digests slower. However, it is not a big problem for the worms, especially if the peel is made small.
Can green, unripe tomatoes go in the worm bin?
Yes, small quantities of unripe (green) tomatoes can go in the worm bin. They are less sugary than ripe tomatoes but still contain moisture and acids. Cut them small and add in moderation, always in combination with sufficient dry material.
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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.
Paper towels
Cucumber
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Blackberry
Perfect for lush indoor plants, the garden, or sharing with the community.
Vegetables
From peels to stems, most vegetable scraps are a perfect meal for your composter.
Fruits
Cores, peels, and rinds provide the energy needed for a healthy, active system.
Household items
Coffee grounds, tea bags, and eggshells add valuable nutrients to your final compost.

