I've got a few Buddleia Buzz. They are great for attracting Butterflies. You should be dead heading them all season, cutting back to next pair of flowers. I have noticed you don't get many Butterflies on the white ones. They are fully hardy. Cut by half now to stop wind rock. In spring cut right down to strong grow shoot.
Peonies when planted don't like to be disturbed.Leave them in the ground and give some protection in winter with compost or leaf mould.I'm sure they will be fine next year.I have a few in my garden which are just coming into their own after 3 years.
It's to late now,but you shouldn't feed tomatoes until the second truss has set and are pea size.Feed once a week.When third truss has set feed twice a week,and so on. I use Tomorite. Works for me.