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Buddleja davidii ‘Ellen’s Blue’ (photo courtesy of Annie’s Annuals & Perennials)
Buddleja davidii ‘Ellen’s Blue’ (photo courtesy of Annie’s Annuals & Perennials)

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Zone
Zones 2-24, 28-35, 37, 39, H1
Full SunPartial Sun
Full, Partial
Regular WaterMinimal Water
Moderate, Minimal

Buddleja davidii

Butterfly Bush, Summer Lilac
Buddlejaceae
Deciduous, Shrubs, Semi-evergreen

BUDDLEJA

Upright, fountain-shaped shrubs beloved for summer flowers. Many selections are available, all notable for flower color, fragrance, or both. Grow in well-drained soil. Blossoms attract butterflies.

Buddleja davidii

Semievergreen to deciduous. Native to China, Japan. Fast growth each spring and summer to 3, 4, or even 10 ft. tall and as wide. Tapering leaves are 4–12 in. long, dark green above, white and felted beneath. In midsummer, branch ends are adorned with small, fragrant flowers (lilac with orange eye) in dense, arching, spikelike, slender clusters 6–12 in. long or more.

Needs good drainage and enough water to maintain growth. Cut back heavily before spring growth begins. May die to the ground in freezing weather but will regrow from roots like a perennial and bloom the same year. Invasive in disturbed soils in parts of Oregon and Washington.

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