Azalea, rhododendron, black walnut tree?

[mogonfoxnight]

Does anyone know whether an azalea or rhododendron would grow near a black walnut tree ok? I looked it up and found that the exbury rhododendron is ok with the toxicity, but I am not sure whether ours is one or not.. The azalea and rhododendron plants are from cuttings from an open garden. Thank you very much if you know for sure!