Buddleja davidii is also spelled Buddleia davidii. It is named after a French missionary, Father Armand David. This plant is native to China and Japan. They also call it Summer Lilac, Orange Eye, or Butterfly Bush.
Buddleja davidii does look a bit like lilac. And of course, it does attract a lot of butterflies. This is probably the reason They call it the Butterfly Bush or Summer Lilac. Buddleja davidii is part of the Scrophulariaceae family of plants.
This is a multi-stemmed shrub. It is deciduous. It grows to 16ft or 5m. Buddleja davidii produces honey-scented purple flowers. It flowers from summer into autumn. Buddleja davidii comes in various shades of purple flowers. The flowers grow in long spikes. Buddleja davidii flowers produce a lot of seeds. It has lance-shaped green leaves. The leaves are the perfect background for the flowers.
Buddleja davidii is considered an invasive plant in England, New Zealand, the US, or Canada. In the UK you can see a lot of them growing on the side of railway tracks.
How to grow Buddleja davidii:
Grow Buddleja davidii in full sun or partial shade. Plant it in well-drained soil. Propagate from cuttings in summer. For hardwood, cuttings try later in autumn.
Prune Buddleja davidii in early spring after the cold. Deadheading will also encourage more flowers and prevent self-seeding. Don’t leave any clippings on the ground as it could easily take root! Buddleja davidii is disease-free. Watch out for red spider mite and capsid bug.
Also read about Buddleja globosa.