Buddleja davidii 'Summerhouse Blue'
butterfly bush 'Summerhouse Blue'
'Summerhouse Blue' is a floriferous, upright, compact shrub with arching branches and silvery grey leaves. China blue flowers with orange throats are produced from early summer through to early autumn.
Buy this plant
Size
Ultimate height
1–1.5 metresTime to ultimate height
5–10 yearsUltimate spread
0.5–1 metresGrowing conditions
Moisture
Moist but well–drained, Well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | ||||
|---|---|---|---|---|
| Summer | Blue | Grey Silver | ||
| Autumn | Blue | Grey Silver | ||
| Winter |
Position
- Full sun
- Partial shade
Aspect
South–facing or East–facing or West–facing
Exposure
Exposed or Sheltered Hardiness
H6Botanical details
- Family
- Scrophulariaceae
- Native to the UK
- No
- Foliage
- Deciduous
- Habit
- Bushy, Columnar upright
- Genus
Buddleja can be evergreen or deciduous shrubs, occasionally trees or scrambling climbers with simple leaves and panicles of small, tubular fragrant flowers
- Name status
Accepted
How to grow
Cultivation
Grow in well-drained soil in full sun or partial shade. See buddleja cultivation for more detailed advice
Propagation
Propagate by semi-hardwood cuttings
Suggested planting locations and garden types
- Cottage and informal garden
- Mediterranean climate plants
- Wildlife gardens
- Low Maintenance
- Flower borders and beds
Pruning
Pests
May be susceptible to aphids, capsid bugs, caterpillars, earwigs, figwort weevils, glasshouse red spider mite, leaf and bud eelworm, and mullein moth
Diseases
May be susceptible to honey fungus, fungal leaf spot, and virus diseases
Get involved
The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.