@Hortica,
Can you tell me, is copper azole treated wood safe or harmful to use as a bare totem to let aroids root onto and climb?
My thinking was yes, because copper is used as a topical and systemic fungicide for plants. But I wasn't sure, and I figure you would know with your background.
I can cover these posts in coir fiber matting, but if I don't have to, I'd rather leave them natural