Spiraea × vanhouttei 'Renaissance' (Vanhoutte Spirea 'Renaissance') gives you the timeless bridal-wreath look with arching branches that fill with white spring flowers. You can use it as a specimen, in a mixed shrub border, or as an informal flowering hedge where its fountainlike form has room to show off.
Plant it in full sun to part shade for the best flowering. You will get the most bloom with more sun, but it will still perform with a few hours of shade. Give it average, well-drained soil and water regularly during its first season so roots establish evenly.
Once established, this spirea is tolerant of brief dry periods, but it looks best with consistent moisture in extended heat. Space plants so air can move through the branches, and mulch to help keep soil moisture steady and reduce weeds.
Prune right after flowering, because it blooms on old wood. Thin out a few of the oldest stems at the base to keep the plant vigorous and maintain its graceful arching shape. With routine post-bloom pruning and a sunny spot, you will enjoy reliable spring color year after year.