This is the shrub that comes to most people’s minds when they think of spirea. Your grandparents probably grew bridal veil spirea in their gardens. Spiraea x vanhouttei is commonly called ‘bridal veil spirea’, but Spiraea prunifolia is also known by that name. These are large bushes, growing up to ten feet tall and sometimes as much as twenty feet wide. Their arching branches are laden with tiny white flowers in the spring.