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Buddleia davidii (Butterfly bush, Summer lilac)

Buddleia davidii Buddleia davidii 'Peacock' Photo/Illustration: Courtesy of White Flower Farm

(Based on 1 user review)

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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11
Botanical Name: Buddleia davidii BUD-lee-ah dah-VID-ee-eye Common Name: Butterfly bush, Summer lilac Genus: Buddleia
This sun-lover comes in hues from pure white to deepest purple. From midsummer until frost, butterfly bush earns its name as hordes of winged beauties flit from flower to flower in search of nectar. The lanceolate leaves are 10 to 12 inches long and white or grayish underneath. The honey-scented flowers are deep purple and grow in spikes, from July to October.
Noteworthy characteristics: This plant and its hybrids attract butterflies and bees greatly and are valuable shrubs for town and suburban gardens and for seaside planting. Listed as a weed in some parts of the U.S. and Canada.
Care: Cut back hard in spring. Hardy below Zone 6, but most aerial portions will winter kill and need to be hard pruned in spring.
Propagation: Cuttings that are made from half-ripe or semi-woody side shoots, 5 or 6 inches long, can be inserted in a closed cold frame, or outside under a hand light in July or early August.
Problems: Capsid bug, caterpillars, weevils, mullein moth and spider mites. Fungal leaf spot and dieback are possible.
Height 6 ft. to 10 ft.
Spread 6 ft. to 10 ft.
Growth Habit Clumps
Growth Pace Invasive/Aggressive Grower;Moderate Grower
Light Full Sun Only
Moisture Dry to Medium
Maintenance Moderate
Tolerance Deer Tolerant
Characteristics Attracts Butterflies; Attracts Hummingbirds; Showy Flowers
Bloom Time Early Fall; Late Summer; Summer
Flower Color Orange/ Salmon Flower; Purple/ Lavender Flower
Uses Beds and Borders
Style Cottage Garden
Seasonal Interest Summer Interest
Type Shrubs

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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

Butterfly bushes are carefree deciduous shrubs that are reliably fragrant and easy to grow. Butterflies swarm to their blooms all summer long. 'Lochinch' has extremely fragrant lilac-blue flowers with orange eyes. It is a cross between B. davidii and B. fallowiana. Its arching, mounded habit typically reaches 3 to 5 feet in one season, but can grow much taller in the deep South. The 8-  to 12-inch-long flower spikes begin in late summer and bloom until frost, starting a little later than the B. davidii cultivars.

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