Q.pruning Passion Flower
I planted a young Passion Flower last September, and it isn’t looking too healthy. Could the winter have killed it off? The plant doesn’t look dead, but there are brown leaves and don’t appear to be any new shoots (it might be a bit early, of course!). Should I prune it back in the hopes that it will encourage new growth?
Some die back would be typical for your Passion Vine over the winter months.
You could trim off any dead material if you desire.
I would give your plant a light fertilizer as indicated in the below link.