About
Aglaonema costatum f. immaculatum is a slow-growing, evergreen perennial that typically reaches a height of around 75 cm. It features elongated, dark green leaves that can grow as long as 20 cm, characterized by a prominent white midrib.
About the genus
Aglaonema consists of rhizomatous evergreen perennials characterized by short stems that support long-stalked leaves, which frequently exhibit appealing variegation. The plant produces inconspicuous flowering spathes that are typically greenish or cream in color.
Growing conditions
- Sunlight
- Partial shade
- Soil type
- Loam
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Well-drained
- Aspect
- East-facing, North-facing, West-facing
- Exposure
- Sheltered
- UK hardiness
- H1B
Plant details
- Plant type
- Houseplants, Conservatory Greenhouse
- Habit
- Clump forming
- Foliage
- Evergreen
- Height
- 0.5-1 metres
- Spread
- 0.5-1 metres
- Time to full height
- 5-10 years
- Suggested uses
- Houseplants, Sub-tropical
- Toxicity
- Humans/Pets: Harmful if eaten, skin/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
Care notes
- 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
- Pruning
- No pruning required
- Propagation
- Propagate by division, separating basal shoots with three or four leaves, with roots attached, in spring
- Pest resistance
- May be susceptible to mealybugs
- Disease resistance
- Generally disease-free