What type of BUTTERFLIES are you trying to attract?
Monarchs, gulf fritillaries, (giant) swallowtails, eastern tiger swallowtails, hummingbird moths,
What NECTAR and HOST plants are in your garden?
Milkweed, various salvia types, pentas, verbena, black-eyed Susans, butterfly bush, lantanas, cone flowers, zinnias, cosmos and many many others.