The Q&A Archives: Rhubarb Leaves In A Compost Heap

Question: Is it all right to put rhubarb leaves in the composter.
I was always told by my father that they would poison the compost. Is this true?

Answer: Although people should not eat the leaves, the reason being their relatively high oxalic acid content, this does not pose a hazard to the compost. I have put small amounts of rhubarb leaves at a time into my compost with no problems. There is no reason I can think of why it would be a bad idea to add them as long as you are not adding them in such a quantity of fresh green material that the materials become overall too wet and high in nitrogen and consequently causing the mix to go out of balance.

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