|S. X Solidaster is and erect and branched, clump-forming perennial. Leaves are 6 inches long and toothed. Corymb-like panicles of light yellow flowers with darker yellow disk florets bloom from midsummer to early fall. Good cut flower. Also referred to as x Solidaster luteus. This hybrid is probably a cross between Solidago canadensis and Aster ptarmicoides.