Aglaonema costatum N.E.Br.

• Genus: Aglaonema
• Botanical Background: Described by N.E.Br., this species has been valued by botanists and horticulturalists alike for its ornamental foliage and ease of indoor cultivation.

• Geographical Range: Parts of Southeast Asia, where it typically grows in the shaded understory of tropical forests.
• Environment: Flourishes in humid, shaded conditions with well-draining, organic-rich soils and a consistently warm climate.

Leaves

• Leaves are elongated, glossy
• Unique variegation of deep green mixed with lighter patterns
• Their leathery texture adds to their visual appeal

Inflorescence (Spadix & Spathe)

• Produces a modest spadix surrounded by a greenish spathe 
• Although the inflorescence is not the main ornamental feature, it is typical of aroids

Growth Habit

• Terrestrial
• Developing from a rhizomatous base that allows it to form clumps over time

Light Requirements

• Best in bright, indirect light 
• Also tolerating lower light conditions
• Popular choice for indoor settings

Watering & Humidity

• Maintain consistent moisture by watering when the top inch of soil feels dry
• High humidity is beneficial, though the plant can adapt to moderate indoor conditions

Soil & Potting Mix

• Use a well-draining, loamy potting mix enriched with organic matter
• Ensure that the container has proper drainage to prevent waterlogging

Temperature & Fertilizer

• Ideal temperature range is between 65°F and 80°F
• A balanced liquid fertilizer applied monthly supports healthy growth during growing season

Division and Cuttings

• Dividing the rhizomes
• Separate mature clumps into smaller sections, ensuring each piece has roots and a growth node

Seeds

• Less common due to slow germination and inconsistent growth patterns

Typical Issues

• Spider mites, mealybugs, and scale insects
• Overwatering can lead to root rot, so proper care is essential

Treatment Recommendations

• Control pests using organic insecticidal soap or neem oil
• Prevent diseases, ensure the soil drains well and avoid excessive moisture

• Celebrated not only for its decorative foliage 
• Cultural significance in some regions, where it is considered a symbol of good fortune

• Striking leaf patterns and adaptability to low-light conditions make it a favorite among indoor plant enthusiasts

Wild Population Status

• Specific conservation data is limited but its widespread cultivation has alleviated concerns over wild population pressures

Market Availability

• Aglaonema costatum is widely available in the horticultural market
• Numerous nurseries offering it as an attractive indoor ornamental plant