Coreopsis

Coreopsis, in the Mountain Meadow seed kit, was hybridized from a  North American native wildfower that is now found in 46 of the 48 contiguous states. It blooms abundantly over a long growing season, just like its relative the sunflower, and its bright yellow flowers, lifted over the foliage on long, thin stems, will raise your spirits. Be sure to cut off any dead or wilted flowerheads ( just the flowerhead, not the stems or leaves)   to keep new flowers coming.