Petite Plum Butterfly Bush

Petite Plum® is Monrovia’s compact butterfly bush, with dense, fragrant plum-purple flower cones and gray-green foliage. [Monrovia](https://www.monrovia.com/petite-plum-dwarf-butterfly-bush.html) gives a mature size of about 5 feet tall and wide, and lists it for sunny sites, borders, containers, and screening. ## Flowers and placement Monrovia identifies the cultivar as Buddleja davidii subsp. nanhoensis ‘Monum’ on its [Petite Plum profile](https://www.monrovia.com/petite-plum-dwarf-butterfly-bush.html). It flowers from midsummer through fall and forms a vase-shaped shrub. Full sun to partial sun and fertile, well-drained soil support steady growth; the cultivar is listed for USDA zones 5–9. Use it as a compact accent in a mixed border or where its flower panicles can be seen up close. It is deciduous and may die back to the ground in colder parts of its range before regrowing in spring. ## Maintenance Water deeply during the first growing season, then reduce watering as the plant establishes. Clip spent flower clusters to encourage continued bloom. Prune in late fall or early spring, and feed in spring according to soil and plant vigor.