Butterflies are most active on warm sunny days. Provide a source of water such as a shallow saucer of water or a birdbath. Butterflies do drink. Place several flat rocks in full sun in the garden. Butterflies need to warm up in the morning before they are capable of active flight.
Rocks provide a basking site for butterflies to raise their body temperature.
It may take time for butterflies to find your yard, especially if you are the only one in the neighborhood providing desirable habitat. For more information on wildlife habitat and other Backyard Conservation practices, contact your local conservation district or the Natural Resources Conservation Service.