Passion flower vs Rhododendron
My Passion flower is growing up through my Rhododendron plant, it seems to be taking over - the rhododendron is healthy and about 7 foot tall - will the passion flower do any harm to it?
Certified GKH Gardening Expert
Yes, it could become an issue for your vine to be growing in the Rhododendron.
It can smother the plant and it likely the Rhododendron will decline.
Moving the vine would be advised.
Here are some links with more information.