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Solanum rantonnetii · Solanaceae

Blue Potato Bush

⚠️ Not safe for petsPerennial, remaining green throughout the year.60 to 150 cm
Full sunMedium watering; keep soil moist.MediumDoes not tolerate temperatures below 5 degrees Celsius.

Description & origin

The Blue Potato Bush is a perennial shrub known for its vibrant purple flowers with yellow centers. It is ideal for sunny gardens and can reach up to 1.5 meters in height.

Size

Can be kept as a compact shrub with regular pruning.

Foliage

Evergreen foliage that remains green year-round.

Flowering

Blooms abundantly in spring and summer.

Detailed care

Light

Prefers full sun for abundant flowering.

Soil

Well-drained soil rich in organic matter.

Watering

Regular watering, keeping the soil slightly moist.

Temperature

Protect from temperatures below 5 degrees Celsius.

Fertilising

Fertilize monthly in spring and summer with a balanced fertilizer.

Repotting

Transplant in spring if necessary, to a larger pot.

Pruning

Prune after flowering to maintain shape and encourage new growth.

Propagation

Easily propagated by semi-hardwood cuttings in summer.

Common problems

Aphids

Can attack leaves and flowers, sucking sap.

Powdery mildew

Fungus causing white spots on leaves.

Root rot

Caused by excess water and poor drainage.

Uses & curiosities

In the garden

  • Hedges
  • Borders
  • Pollinator attraction

Other uses

Ideal for Mediterranean and sunny gardens.

Did you know…

This plant is often confused with its close relative, Solanum, due to the similarity of the flowers.