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Amorphophallus bangkokensis Gagnep.

Introduction & Overview

Common and Scientific Names

  • Scientific Name: Amorphophallus bangkokensis Gagnep.
  • Common Name: No widely adopted common names exist

Quick Facts

  • Origin: Native to regions near Bangkok and other parts of Southeast Asia
  • Features: Large, unusual inflorescence and distinctive, deep green foliage

Taxonomy & Classification

  • Genus: Amorphophallus
  • Botanical Background: Described by the French botanist Gagnepain, the species has been studied in the context of Southeast Asian flora. 

Natural Habitat & Distribution

  • Geographical Range: Indigenous to tropical regions of Southeast Asia, with recorded occurrences in areas surrounding Bangkok.
  • Environment: Thrives in humid tropical rainforests; favors well-drained soils rich in organic matter, along with a consistently warm climate and high ambient humidity that support its growth and seasonal flowering.

Morphological Characteristics

Leaves

  • Large, somewhat lobed leaves
  • Dark green with a glossy texture

Inflorescence (Spadix & Spathe)

  • Includes a central spadix surrounded by a prominent spathe
  • Attracts specific pollinators through visual cues and heat generation

Growth Habit

  • Tuberous, terrestrial plant with a pronounced rhizome that stores nutrients
  • Includes a dormant period, during which the tuber remains underground

Cultivation & Care

Light Requirements

  • Bright, indirect light
  • Partial shade that mimics its native forest understory is idea

Watering & Humidity

  • Requires regular watering to maintain moist but not waterlogged soil
  • High ambient humidity is beneficial, and misting may help in drier environments

Soil & Potting Mix

  • A well-draining mix enriched with organic matter
  • Combination of loam, peat, and perlite works well

Temperature & Fertilizer

  • Warm environment with temperatures between 70°F and 85°F (21°C to 29°C)
  • A balanced, diluted fertilizer every two to four weeks 

Propagation Methods

Division and Cuttings

  • Most common propagation method is through division of the tuber or rhizome
  • Should be done during the dormant season to minimize stress on the plant

Seeds

  • Germination process may be slow and erratic
  • Requires a warm and humid environment with careful attention to soil moisture and temperature

Common Pests & Diseases

Typical Issues

  • Spider mites, mealybugs, or aphids
  • Root rot can occur if the soil remains overly wet, especially during cooler periods

Treatment Recommendations

  • Organic insecticidal soaps or neem oil 
  • Adjusting watering practices and applying fungicides

Notable Traits & Uses

  • Folklore surrounding dramatic blooming events has elevated the plant to a symbol of natural wonder
  • Unique flowering cycle and imposing inflorescence have also become a subject of study among botanists
  • Prized for its rare display of inflorescence and the botanical curiosity it presents
  • Striking appearance makes it a centerpiece in specialized tropical plant collections

Conservation & Availability

Wild Population Status

  • Habitat loss and collection pressures remain concerns in some areas

Market Availability

  • Not broadly available in the mainstream horticultural market
  • Tends to be found in the collections of dedicated growers and botanical gardens, and may command a premium price due to its rarity

References & Resources

Further Reading

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