If you do not have the time to rear butterflies, you can enjoy them by attracting adults to your garden with nectar plants. Some examples are listed below.

Cutivated Plants:

1. French Marigolds Tagetes patula
2. Purple Coneflower Echinacea purpurea
3. Asters aster sp.(cultivated varieties)
4. Yarrow Achillea sp.

Wild Plants:

1. New England Aster Aster novae-angliae
2. Common Milkweed Asclepias syriaca
3. Orange Milkweed Asclepias tuberosa
4. Goldenrod Solidago sp.
5. Wild Mints
6. Vipers Bluegloss Echium vulgare
7. Dames Rochet Hesperis matronalis

Source:

Butterflly Gardens, Luring Natures Loveliest Pollinators to Your Yard,. Brooklyn Botanical Gardens, 1996.