Philadelphus coronarius is a species of flowering plant in the family Hydrangaceae, native to Southern Europe. It is a deciduous shrub growing to 3 m tall by 2.5 m wide, with toothed leaves and bowl-shaped white flowers with prominent stamens.
Mock orange is, generally speaking, deciduous and multi-stemmed, with a height and spread that are roughly the same. It is classified as a shrub (bush). Mock orange shrubs are rich with nectar and attract butterflies. As the "mock" in its name suggests, mock orange is not a true orange. But the citrusy smell of its blossoms is enough to invite comparison and inspire the common name. The fragrance is a major selling point for mock orange shrubs, but not all cultivars are equally fragrant. Therefore, a good time to buy mock orange is when it is in bloom at the nursery so you can smell before you buy. Massed along a border, they can form a loose privacy hedge for summer. The blossoms are often used as cut flowers.