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Herbaceous PerennialHouseplants

Plectranthus purpuratus
  • RHS AGM

A trailing or spreading evergreen perennial with freely branching stems and soft, fleshy, aromatic dark green leaves that are slightly furry and purple tinted beneath. Tiny bluish-white, tubular flowers are produced in summer and at intervals, year round

Size
Ultimate height
0.1–0.5 metres
Time to ultimate height
1–2 years
Ultimate spread
0.5–1 metres
Growing conditions
Loam
Moisture
Well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green Purple
Summer Blue White Green Purple
Autumn Green Purple
Winter Green Purple
Position
  • Partial shade
Aspect

East–facing or West–facing

Exposure
Sheltered
Hardiness
H1C
Botanical details
Family
Lamiaceae
Native to the UK
No
Foliage
Evergreen
Habit
Trailing
Genus

Plectranthus can be annuals, evergreen perennials or shrubs, with opposite, ovate or heart-shaped, sometimes fleshy leaves, and 2-lipped, tubular flowers borne in whorls forming spikes or panicles

Name status

Correct

Plant range
Eastern S Africa

How to grow

Cultivation

Under glass grow in loam-based potting compost (John Innes No. 2) in full light, with shade from hot sun; during the growing season water regularly to keep the compost moist but not soggy, and apply a general liquid or houseplant fertiliser mothly. Keep just moist in winter

Propagation

Propagate by division in mid or late spring or propagate by stem-tip softwood cuttings at any time

Suggested planting locations and garden types
  • Patio and container plants
  • Conservatory and greenhouse
Pruning

No pruning required

Pests

Generally pest-free

Diseases

Generally disease-free

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