Aglaonema costatum f. immaculatum

RHS Plant Profile
unspotted Chinese evergreen
Award of Garden Merit
Houseplants Conservatory Greenhouse

A slow-growing, evergreen perennial to about 75cm, with dark green, lance-shaped leaves up to 20cm long, with a white midrib

Position

Partial shade

Soil Types

Loam

Max Height

0.5-1 metres

Max Spread

0.5-1 metres

Size

Time to Maturity
5–10 years
Max Spread
0.5-1 metres
Max Height
0.5-1 metres

Growing Conditions

Loam
Moisture
Well–drained
pH
Acid or Alkaline or Neutral

Position

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

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Araceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Clump forming
Potentially harmful
Humans/Pets: Harmful if eatenskin/eye irritant. Wear gloves and other protective equipment when handling For further information and contact numbers regarding pets, see the HTA guide to potentially harmful plants
Genus
Aglaonema are rhizomatous evergreen perennials with short stems bearing long-stalked, often attractively variegated leaves and rather insignificant, greenish or cream flowering spathes
Name Status
Correct

How to Grow

Cultivation

Grow in a temperate or warm greenhouse or conservatory, or as a houseplant, in well-drained potting compost, in filtered light, with high humidity. Water moderately in the growing season, with a monthly balanced, liquid fertilizer, and in winter allow some drying out between waterings. Pot on every two to three years. See houseplant cultivation for further information

Propagation

Propagate by division, separating basal shoots with three or four leaves, with roots attached, in spring

Suggested planting locations and garden types

  • Houseplants
  • Sub-tropical
  • Conservatory and greenhouse

Pruning

No pruning required

Pests

May be susceptible to mealybugs

Diseases

Generally disease-free