I checked on our Fritillary caterpillars and they have completely devoured the passiflora.  OH! NO!

 

But wait!!  There's good news!!  I learned that Fritillaries overwinter as caterpillars.  They finish eating and growing in the spring when their food source reemerges.  

 

That made me feel better, knowing that I was not expected to provide enough food for all of them to survive.  Jon keeps reminding me that they have been doing this for a very long time without human intervention.  Nature has it under control.

 

HAPPY GARDENING!!