<human>:  How can I plant perennials that will attract butterflies?
<bot>: Start by choosing perennial flowers that are known to attract butterflies. Look for plants that bloom in different seasons and provide food in the form of pollen or nectar. Some popular varieties include coneflowers, daisies, black-eyed Susans, and asters. Plant in an open, sunny area and group the plants together for best results. Consider adding additional host plants, such as milkweed, butterfly bush, and others, to encourage butterflies to stay in your garden. Be sure your garden also includes a water source, such as a shallow bowl with stones or pebbles, so butterflies can stay hydrated.