Amorphophallus pendulus Bogner & Mayo

• Genus: Amorphophallus 
• Botanical Background: Described by renowned botanists Bogner and Mayo, who contributed significantly to the study of tropical aroids. 

• Geographical Range: Native to select areas of Southeast Asia, where it is typically found in tropical lowland rainforests and occasionally in montane regions.
• Environment: Thrives in warm, humid conditions with well-drained, organic-rich soils; it is adapted to environments that offer dappled sunlight under a forest canopy and high ambient moisture.

Leaves

• Large, broad
• Dark green with a glossy texture and prominent venation
• Often deeply lobed and can display a slight undulating pattern

Inflorescence (Spadix & Spathe)

• Consists of a spadix that is elongated and supports a relatively small, curved spathe
• Spathe exhibits a subtle coloration, often in shades of green or muted brown,
• May emit a mild scent to attract specific pollinators

Growth Habit

• Grows as a terrestrial plant with a robust rhizome that stores nutrients
• Its pendulous nature is evident in both its inflorescence and some of its leaf structures

Light Requirements

• Provide bright, indirect light for optimal growth
• Direct sunlight may be too harsh and can damage the foliage
  

Watering & Humidity

• Regular watering is essential
• High humidity levels are beneficial; ideal for tropical greenhouse settings
• Soil should remain moist but not waterlogged

Soil & Potting Mix

• A well-draining mix enriched with organic matter is recommended
• A blend of peat, perlite, and compost works well in supporting healthy root development

Temperature & Fertilizer

• Ideal temperature range is warm, typically between 70°F and 85°F
• Balanced, water-soluble fertilizer during its growing season

Division and Cuttings

• Most effective propagation technique is through division of rhizome
• Carefully separate portions of the rhizome during the dormant season to produce new plants

Seeds

• Less common due to variable germination rates; when grown from seed, a warm, humid environment is essential for successful germination

Typical Issues

• Spider mites and mealybugs
• Root rot can occur if the plant is overwatered or planted in poorly draining soil

Treatment Recommendations

• Use insecticidal soap for pest control or neem oil for an organic solution
• For root rot, remove affected roots, treat with a fungicide, and ensure proper drainage in the pot

• The drooping character of its inflorescence is a distinguishing trait that sets Amorphophallus pendulus apart from many of its relatives
• Its unique growth form has also inspired interest in its ecological role within native tropical forests

• Prized for its rarity and the dramatic visual impact of its pendulous inflorescence and bold foliage
• It is often featured in specialized tropical plant collections
  

Wild Population Status

• While not widely studied, the natural populations of Amorphophallus pendulus may be vulnerable due to habitat loss in parts of Southeast Asia
• Conservation efforts are focused on habitat protection and ex-situ cultivation

Market Availability

• Considered rare in cultivation
• Typically available only through specialized collectors or botanical institutions