Linda, I am super jealous of your Spicebushies! If I got the skunk vine off my Spicebush and Sassafras, I might have more butterflies able to find the host plant, but what are you gonna do? It seems like it's been a slow year for Giant STs here in the wild but because they went insane in the flight cage at MOSI we've got tanks full of caterpillars. I've only found a handful of cats in the garden, though. One was on Wild Lime and the others were on rue. Sometimes it's like that, though. Been a great year for Orange-Barred Sulphurs and the Sleepy Oranges are starting up early this year, too. I guess I just appreciate whoever happens to show up, but I do worry about the ones that don't! Then, I remind myself about the cyclical nature of, well, nature. Maybe next year will be better. I wonder if that citrus greening has had an effect since lots of people have had to remove their infected trees? Hmmm...something to ponder.