The dusty miller plant is an interesting landscape addition, grown for its silvery gray foliage. The lacy leaves are attractive companions for many blooms in the garden. Dusty miller care is minimal when the plant is established. As with most silvery, furry plants, growing dusty miller helps the garden remain attractive through the heat of the summer. Dusty miller can handle the heat, but is best planted where afternoon shade is available during the hottest months of summer.