Not the plant you're looking for? Search over 300,000 plants
Climber Wall ShrubConservatory GreenhouseShrubsSynonym

Solanum rantonnetii

blue potato bush

A lax, evergreen shrub producing clusters of lightly fragrant, purple-blue, funnel-shaped flowers in summer and autumn. These are followed by red berries

Synonyms
Solanum rantonnetii
Buy this plant
Size
Ultimate height
1.5–2.5 metres
Time to ultimate height
2–5 years
Ultimate spread
1.5–2.5 metres
Growing conditions
Loam
Moisture
Moist but well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Blue Green
Autumn Blue Green Red
Winter Green
Position
  • Full sun
Aspect

South–facing or West–facing

Exposure
Sheltered
Hardiness
H3
Botanical details
Family
Solanaceae
Native to GB / Ireland
No
Foliage
Evergreen
Habit
Bushy
Potentially harmful
All parts can cause severe discomfort if eaten. Wear gloves and wash hands after handling
Genus

A genus of around 150 diverse species of flowering shrubs, native to tropical America, Asia and the Pacific. They have green foliage and flowers which can be cup or star-shaped in shades of purple, white or pink

Name status

Correct

Plant range
Paraguay, Argentina

How to grow

Cultivation

May survive as a wall-shrub in very mild areas, or grow as a standard in a pot and take under cover for winter. Otherwise grow in a cool greenhouse or conservatory with shade from the brightest sun and moderate humidity. Plants will require support

Propagation

Propagate by seed, or semi-ripe cuttings taken in summer or early autumn and rooted with gentle bottom heat

Suggested planting locations and garden types
  • City and courtyard gardens
  • Patio and container plants
  • Mediterranean climate plants
  • Wall side borders
Pruning

Pruning group 9 if freestanding or pruning group 12 as a wall shrub

Pests

May be susceptible to aphids and glasshouse red spider mite whilst under glass

Diseases

Prone to grey moulds under glass

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.