Walnut Trees
Q.

Can walnut shells, branches and leaves go in the compost?

Zone Berlin | tessinadelille added on April 1, 2019 | Answered

I read they can be toxic and therefore should stay out of the compost pile. What do you think? Thank you!

A.
A.Answers to this queston: Add Answer
Downtoearthdigs
Certified GKH Gardening Expert
Answered on April 1, 2019

You can compost these parts of the tree, though you will need to wait the appropriate time before using this composted material.
These links have more information.

https://www.extension.iastate.edu/news/2005/jul/070701.htm
https://www.gardeningknowhow.com/garden-how-to/info/allelopathic-plants.htm
https://www.gardeningknowhow.com/composting/ingredients/nut-shells-in-compost.htm

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