Philadelphus Silver Showers PICK UP ONLY. Also known as mock orange. Philadelphus silver showers is a rounded multi-stemmed deciduous shrub with a shapely form and gracefully arching branches with mid-green leaves. In summer this dense, compact shrub is covered in a profusion of very fragrant, single, cup shaped, white flowers. Excellent choice for a mixed or shrub border. Strawberry scented.