Generally, yes. RNs and NPs are authorized to possess and administer cannabis for medical purposes in settings other than those defined as a hospital through employer policy.
In these settings, the nurse has access to the client’s private residence by way of invitation to provide nursing services. The invitation may be "express" through direct communication orally or in writing e.g. inviting the nurse into the home or "implied" through actions or conduct e.g. nodding or gesturing for the nurse to enter the home (CNPS, 2018).