I'm jealous, and yep, passion flower is safe, makes a good tea to go to bed, similar to chamomile.
Meditate before you venture, take it seriously, use it as medicinalโit is good psychotherapy if needed. Realize that you, the Earth, others, and the Universe are all one and the same process. Then take that knowledge back to become, as you already are, one with nature. Eternity in every moment. Divinity in every particle. All is one organism.