My garden is very small, probably about 100 square feet, if that. I do plant a few deer resistant annuals. Profusion zinnias have done well most years but have rarely come back from seed. Melampodium on the other hand love the sun and the heat. They come back year after year. Mostly I just have room for one or two annuals here or there between the perennials. I buy a six pack and a couple of 3 inch pots and the empty spots are full.
I planned my garden so something would always be blooming. Iris follow daffodils. If the deer don't get them, the lilies burst with color. Kniphofia have been an interesting addition. If I deadhead,coreopsis Nana goes until July. Mercury Rising is still blooming. The echinacea and rudbeckia shine now. As long as I deadhead, my lantana will go until frost.