Monstera deliciosa 'Thai Constellation' (v)

RHS Plant Profile

Swiss cheese plant 'Thai Constellation'

Conservatory Greenhouse Houseplants Climber Wall Shrub

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A tropical evergreen climber, slightly slower growing than the species, and with leaves more closely spaced. Mature leaves are heart-shaped, pinnatisect and often perforated, and deep green splashed and streaked with creamy white

Position

Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

2.5-4 metres

Max Spread

1.5-2.5 metres

Size

Time to Maturity: 10–20 years
Max Spread: 1.5-2.5 metres
Max Height: 2.5-4 metres

Growing Conditions

Chalk Clay Loam Sand

Moisture: Moist but well–drained
pH: Acid or Alkaline or Neutral

Position

Partial shade

Aspect: East–facing or South–facing or West–facing
Exposure: Sheltered
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

H1A: under glass all year (>15C)
H1B: can be grown outside in the summer (10 - 15)
H1C: can be grown outside in the summer (5 - 10)
H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
H4: hardy through most of the UK (-10 to -5)
H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
H6: hardy in all of UK and northern Europe (-20 to -15)
H7: hardy in the severest European continental climates (< -20): H1B

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Araceae
Native to GB/Ireland: No
Foliage: Evergreen
Habit: Climbing, Trailing
Potentially harmful: Harmful if eatenskin/eye irritant. Wear gloves and other protective equipment when handling Pets: Harmful if eatenskin/eye irritant. For further information and contact numbers regarding pets, see the HTA guide to potentially harmful plants
Genus: Monstera are evergreen climbing shrubs with aerial roots, and usually ovate leaves which are often pinnately cut or lobed; arum-like flowerheads with white spathes arise from the leaf axils on mature plants
Name Status: Accepted

How to Grow

Cultivation

Under glass, grow in a peat-free, loam-based potting compost in bright, indirect light with moderate to high humidity. Water when in growth and keep just moist in winter. Apply a balanced liquid fertiliser monthly when in growth. May be kept outdoors in warmer regions, but at temperatures no less than 18°C, in most moderately fertile, humus-rich soils in partial shade. See houseplant cultivation and Monstera for further information

Propagation

Propagate by seed, root tip or stem cuttings

Suggested planting locations and garden types

Houseplants
Sub-tropical
Conservatory and greenhouse
Climber and wall shrubs

Pruning

Pruning group 11

Pests

May be susceptible to scale insects and glasshouse red spider mite

Diseases

Generally disease-free