Tradescantia spathacea

RHS Plant Profile
oyster plant

Other common names

boat lily, Christ in the manger, cradle lily, men in a boat, Moses in his cradle, Moses in the bulrushes, Moses in the cradle, Moses on a raft, prayer plant, purple-leaved spiderwort, three men in a boat

Synonyms

Rhoeo discolor
Rhoeo spathacea

Conservatory Greenhouse Houseplants

An evergreen perennial to 30cm, forming a clump of rosettes of narrowly lance-shaped, dark green leaves, deep purple beneath, to 30cm in length; axillary clusters of small white flowers with leaf-like purple bracts

Position

Full sun, Partial shade

Soil Types

Sand, Loam

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
1–2 years
Max Spread
0.1-0.5 metres
Max Height
0.1-0.5 metres

Growing Conditions

Sand Loam
Moisture
Moist but well–drained or Well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun Partial shade
Aspect
West–facing or South–facing or North–facing or East–facing
Exposure
Sheltered
Hardiness
H1B

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Commelinaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Clump forming
Potentially harmful
Skin allergen. Wear gloves and other protective equipment when handling
Genus
Tradescantia can be trailing or tufted perennials with usually fleshy, evergreen foliage and distinctive, 3-petalled flowers
Name Status
Correct
Plant Range
C America

How to Grow

Cultivation

Undemanding, easy-to-grow houseplant, or for summer outdoor displays planted in fertile, free draining soil. Direct sunshine may scorch the leaves. Indoors grow in bright filtered light, planted using peat-free, houseplant or multipurpose compost. When in active growth water moderately and liquid feed monthly. Reduce watering in winter. See houseplant cultivation for further advice

Propagation

Propagate by taking stem tip cuttings or by division

Suggested planting locations and garden types

  • Houseplants
  • Sub-tropical
  • Patio and container plants
  • Conservatory and greenhouse

Pruning

Remove faded flowered stems

Pests

May be susceptible to red spider mite, mealybugs, aphids, vine weevil and thrips

Diseases

Generally disease-free