ducks4you
Garden Master
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This:
is what my friend grows.
It says hardy to Central IL, zone 6, so maybe you are just too cold for it, but I don't think so.
AlTHOUGH, location next to your house might help it survive if you replant this year. I have a blue salvia that I swore wouldn't survive. It is 6 ft from the foundation, East side of the house, so the house protects it from the fiercest winter winds and it comes back every year. Right now it has begun flowering. It also needs Full Sun.
I would try again.
Growing the Native Passionflower: Passiflora incarnata - Dave's Garden
Native passionflowers are easy to grow and give the garden a tropical look.
davesgarden.com
It says hardy to Central IL, zone 6, so maybe you are just too cold for it, but I don't think so.
AlTHOUGH, location next to your house might help it survive if you replant this year. I have a blue salvia that I swore wouldn't survive. It is 6 ft from the foundation, East side of the house, so the house protects it from the fiercest winter winds and it comes back every year. Right now it has begun flowering. It also needs Full Sun.
I would try again.