Butterfly Bush
Buddleja davidii
A deciduous shrub featuring arching branches, lance-shaped grayish-green leaves, and large, dense, cone-shaped panicles of vibrant purple or magenta flowers with contrasting orange centers.
- Light
- Full sun, requiring at least 6 hours of direct sunlight per day.
- Water
- Moderate water needs once established. It tolerates brief dry periods well. Water deeply when the top few inches of soil feel dry to the touch.
- Growth
- Perennial deciduous shrub with a rapid growth rate, typically reaching mature heights of 6 to 12 feet and a spread of 4 to 10 feet with an open, arching habit.
Care instructions
Plant in a location with full sun and well-draining soil. Water deeply during establishment and maintain moderate moisture, allowing soil to dry out between waterings. Apply a balanced fertilizer in spring before new growth begins.
Growing details
Sunlight
Full sun, requiring at least 6 hours of direct sunlight per day.
Watering
Moderate water needs once established. It tolerates brief dry periods well. Water deeply when the top few inches of soil feel dry to the touch.
Soil
Prefers well-draining loamy or sandy soils with a neutral to slightly alkaline pH range between 6.0 and 7.5.
Hardiness zone
USDA Hardiness Zones 5 through 9, exhibiting good cold hardiness within these ranges.
Growth habit
Perennial deciduous shrub with a rapid growth rate, typically reaching mature heights of 6 to 12 feet and a spread of 4 to 10 feet with an open, arching habit.
Bloom season
Blooms from mid-summer through early autumn, producing large, fragrant panicles of purple, pink, blue, or white flowers.
Propagation
Easily propagated via softwood cuttings taken in late spring or early summer, or through hardwood cuttings in autumn, as well as by seed sown in spring.
Common pests & issues
Generally resilient, but can occasionally be affected by spider mites, root rot in poorly draining soils, and powdery mildew during humid conditions.
Similar species
Can be confused with Lilac (Syringa vulgaris) species, but differs in its longer, more tapered panicles and continuous blooming period extending into autumn.