Wish to attract more butterflies to my garden
Here is a good link and resources for attracting pollinators to your garden. https://extension.umd.edu/hgic/topics/how-attract-and-conserve-pollinators-and-natural-enemies-your-...
If you want butterflies to breed in your garden you have to choose the appropriate plants with some knowledge of butterflies common to your area, as well as provide caterpillar host and nectar plants. Here is some information on the butterflies of MD and host plants
and pollinator plants for the Mid Atlantic Region https://xerces.org/wp-content/uploads/2016/10/2017-049_Mid-AtlanticPlantList_Dec2017_web-3page.pdf
Here is another link from Penn State https://extension.psu.edu/gardening-for-butterflies
Plants grow best in full sun - consider milkweed sp., aster, goldenrod, joe pye weed, and purple coneflower, etc.