Name: Kurt Woodbridge , Va (Zone 7a) Jai guru deva om
yes bronze fennel is definitely a perennial
and although I have never seen a black swallowtail in my yard , I have had black swallowtails caterpillars on it every year we have had it , which is 3 not counting this one , I think.
A pint can't hold a quart , If it is holding a pint it is doing the best that it can.
and it is written ,
if the evil spirit arms the tiger with claws , brahman provided wings for the dove.
bronze fennel is definitely a perennial 
