Phacelia does well where i am. It's beautiful, early and late bloomer, self seeding, good for compost( i use it as mulch in my veggie beds if it is robbing light of a vegetable, i don't think it's edible for you or your rabbit though, but pollinators love it!
Asters are perennial flowers, late bloomers, bees love it to get that autumn boost in the hive.
Hyssops is a great herb for lungs , easy from seed if you get the right one, beautiful, flowers all summer, attracts loads of insects and is perennial.
Agastaches, leaks, echinacea,cosmos, fennel, pulmanoria,marjoram,sage and thyme might be interesting to tick some boxes.
I got it from a book gardening for wildlife.