Sea pink, also known as sea thrift plant, thrift plant, and common thrift (Armeria maritima), is a low-growing perennial evergreen that is hardy in USDA plant hardiness zones 4 through 8. Growing sea pinks and how to take care of thrift plants is easy.
https://www.gardeningknowhow.com/ornamental/flowers/thrift/growing-thrift-plants.htm
Under The White Oak Leaves 