Spiraea 39arguta39 or more commonly known as bridal wreath or foam of may is a beautiful large and bushy garden shrub that becomes covered in arching sprays of small white flowers in may it is very easy to maintain and makes a great informal hedge or as a specimen in a large border alongside other flowering shrubs such as rhododendron it is well suited to both cottage and modern style gardens and is perfect for 39white gardens39 where only plants with white flowers are used