Are Black walnut trees poisonous to chameleons?


New Member
I'm a relatively new chameleon owner and I have a question that I cant seem to find answers for anywhere and I was hoping I’d be able to get answers for. I live in Michigan, and all I have around my house are black walnut trees, which are pretty poisonous. I would buy sticks but I am short on money, so I decided to use sticks from my backyard. I didn't think about how poisonous they would be until now, do you think they would be safe for a chameleon? Ive tried my best to sanitize them but I'm still a little worried.

Klyde O'Scope

Chameleon Enthusiast
The toxic ingredient is juglone, and it's in all parts of the plant, likely distributed by the sap under the bark. I'd like to be able to say strip the bark away, and clean the sticks, but I just don't know.
I can't find anything specific on reptiles & juglone, so personally, I'd pass.
Other nut trees can also contain juglone in lesser quantities.

Is there a park or public land you could get to for a little 'nature hike'? :rolleyes:
Woods behind a school?

Know your trees. ;)

Maple, birch, oak, and non-citrus fruit trees should be OK AFAIK.


Staff member
I know even the wood chips from black walnut are poisonous to horses. Since some chameleons lick and chew their branches, to be safe I would replace them with something else.
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