what kind of shrub is this??
Thank you for your inquiry. From your photo the shrub in question appears to be a type of Spirea. Without knowing the flower colour and when it flowers it is difficult to identify the exact species. However, your Spirea could either be S. bumalda or S. japonica.
Spireas are small to medium sized deciduous shrubs that produce cascades of flowers in late spring and summer. Flower colors include pink, red, yellow, and white, depending on the variety. Some types of Spirea have colorful fall foliage. Deadheading spent flowers right after blooming ends will sometimes induce in a second flowering. Most spireas can be pruned after flowering to reduce their height and maintain the desired shape.
You may wish to refer to the following websites for additional information on the care and pruning of various Spireas