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Butterfly Bush, Summer Lilac

Butterfly Bush, Summer Lilac
Photo: Lorna Rose
Invasive Plant
Butterfly Bush, Summer Lilac
Buddleia davidii

Who would think that this plant with its delightful name would become an environmental weed?

Arching stems carry sprays of fragrant tiny gold-throated, mauve flowers in spring and summer. As the name suggests, it attracts butterflies.

A tough, vigorous plant from 3–5 m high, it was commonly planted as a quick growing privacy plant.



  • Seeds are spread by wind and water.
  • Dumping of garden prunings that may easily take root.
  • This plant grows readily in damp areas to create shady thickets crowding out natural species and destroying habitat.
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Alternative Plants

Buddleia 'Spring Promise'
Photo: Paradise Plants
Alternative Plant Buddleia 'Spring Promise'
Buddleia 'Spring Promise'
Trees and Shrubs

Buddleias are usually summer flowering shrubs and considered too vigorous for the average garden, however, Buddleia 'Spring Promise' is a smaller noninvasive hybrid. It has masses of long slender stems of white delicately scented flowers from the middle of winter through to spring. This species can be grown in full-sun or part-shade. It grows quickly and will tolerate relatively dry conditions when established.

Photo: Delwyn Thomas
Alternative Plant Lilac
Syringa vulgaris hybrids and cultivars
Trees and Shrubs

Famous for their trusses of single or double highly fragrant flowers in white, soft yellow, various shades of pink and mauve to purple from spring to early summer. They thrive in cool-climate gardens and are easily grown in well-drained, sandy soils. They perform best when planted in full-sun or light-shade. Ask at your local garden centre for the best Lilacs recommended for your garden.

Snowball Tree
Photo: Macbird Floraprint
Alternative Plant Snowball Tree
Viburnum opulus sterile
Trees and Shrubs

This is a popular, large 'old world' deciduous shrub to 3 m high by 3 m wide with hydrangea-like large rounded heads of white flowers in spring that resemble snowballs. The maple-like leaves colour brilliantly in autumn in shades of yellow-red or redburgundy depending on the soil and local conditions. This plant is sterile.

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