Mrs. Ed, don' despair, I am caterpillar-less too! Poo!
I have all kinds of dill, fennel, parsley, milkweed(4 varieties), spicebush,pipevine,pawpaw, and flowers I know the butterflies like, esp zinnias, joe pye and butterfly bush.
Is it something I said?
**sigh**
Marna, and Scarletbean, may I please join the club? I too AM caterpillar-less as well here. sob sob, sob. I saw a few TST, maybe one BST the other day. I've many of the mentioned host plants in the garden also. But so far nothing, zip, zero, nada! I really suspected the past extended winter we had really made an impact on my caterpillar-less condition?
I looked and was turning green to see friends on Northern zones have Monarch, and I haven't seen but sporadic one here and there. No eggs, no cats. :((