| Common Name : | summer lilac, butterfly-bush. |
| Binomial Name : | Buddleja davidii |
| Family : | Scrophulariaceae |
| Photo Taken : | Ireland |
Botanical Identity
Buddleja davidii, commonly known as butterfly bush, is a deciduous shrub in the Scrophulariaceae family. It is native to central China and Tibet but has become widely naturalized in temperate regions across the world. The plant is named after the French missionary and botanist Father Armand David, who first described it scientifically. It is especially valued for its long, colorful flower spikes that attract butterflies and other pollinators.
Plant Description
Buddleja davidii is a fast-growing shrub that can reach 2 to 5 meters in height and spread. It has arching branches with lance-shaped, gray-green leaves that are opposite, toothed at the margins, and covered in fine hairs underneath. Leaves are typically 10–25 cm long and have a rough texture. The plant prefers full sun and well-drained soils and is tolerant of drought and poor soil conditions. Due to its rapid growth and seeding, it is considered invasive in some regions, particularly in parts of Europe and North America.
Flowers and Fruit Characteristics
The flowers of Buddleja davidii are tiny and tubular, grouped densely in cone-shaped panicles that can reach 15–30 cm in length. Each flower is typically lavender to purple, though cultivars may also bear white, pink, red, or deep violet blooms. The flowers have a sweet, honey-like fragrance and are rich in nectar. Blooming from midsummer to early autumn, they are highly attractive to butterflies, hence the plant’s common name. The fruit consists of small, dry capsules containing numerous fine seeds, which are dispersed by wind.
Uses and Cultural Significance
Primarily grown as an ornamental plant, Buddleja davidii is a staple in butterfly gardens and mixed borders for its showy flowers and wildlife appeal. It is appreciated by gardeners for its low maintenance and long blooming season. Beyond its horticultural use, the plant plays an ecological role in supporting pollinators during mid to late summer. However, its tendency to spread aggressively has led to restrictions in some regions, where it is managed to protect native biodiversity.
Photos of this summer lilac, butterfly-bush. (Buddleja davidii) were taken from the following locations:
1) July 2016: War memorial garden, Dublin, Ireland.
Written by Lonely Traveler,
For blog icflora.blogspot.com
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