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Amorphophallus haematospadix Hook.f.

Introduction & Overview

Common and Scientific Names

  • Scientific Name: Amorphophallus haematospadix
  • Common Name: Blood-red Titan Arum (referring to its spathe color)

Quick Facts

  • Origin: Found in tropical regions of Southeast Asia, particularly in lowland rainforests
  • Features:  Most distinctive feature is its large, red-colored spathe that envelops the spadix; the inflorescence of Amorphophallus haematospadix resembles other members of the genus but is notably smaller in size

Taxonomy & Classification

  • Genus: Amorphophallus
  • Botanical Background: Described by botanist Joseph Dalton Hooker in the 19th century. The genus Amorphophallus has been studied for its remarkable inflorescences, which are often used to study pollination strategies.

Natural Habitat & Distribution

  • Geographical Range: Native to tropical Southeast Asia, with a particular prevalence in Malaysia and Indonesia, where it thrives in moist, lowland environments
  • Environment: Naturally grows in tropical rainforests with high humidity levels, rich soil, and a stable warm climate; it requires moist conditions to thrive, often being found in shaded areas under taller canopy trees.

Morphological Characteristics

Leaves

  • Large, typically lanceolate or palmate, with a deep green coloration
  • They emerge after the plant's flowering cycle and have a prominent, glossy texture

Inflorescence (Spadix & Spathe)

  • Consists of a deep red spathe that surrounds a central spadix, which is smaller compared to other species in the genus
  • The spathe can reach up to 30 cm in height and is known for a pungent odor used to attract pollinators, particularly carrion-feeding insects

Growth Habit

  • A terrestrial plant that produces a large, swollen tuber from which the leaves and inflorescences emerge
  • Does not climb or grow epiphytically and has a relatively short flowering season

Cultivation & Care

Light Requirements

  • Prefers low to moderate light, ideally bright, indirect light
  • Does not tolerate direct sunlight for extended periods as it can cause leaf scorch

Watering & Humidity

  • Requires consistently moist soil, especially during its growing season.
  • Thrives in environments with high humidity
  • Regular misting or a humidity tray can help replicate its native habitat

Soil & Potting Mix

  • Well-draining, rich organic soil is recommended 
  • A mix of potting soil with added perlite or sand works well
  • Prefers soil with slightly acidic to neutral pH

Temperature & Fertilizer

  • Grows best in temperatures ranging from 25°C to 30°C (77°F to 86°F)
  • Balanced fertilizer applied during the growing season, typically once a month, with a focus on nitrogen to encourage leaf growth

Propagation Methods

Division and Stem Cuttings

  • Division of the tuber
  • Ensure each division has at least one growing eye or bud

Seeds

  • Not commonly used due to germination rates typically low
  • Require warm conditions to germinate; seeds should be planted immediately after harvesting

Common Pests & Diseases

Typical Issues

  • Aphids, scale, and mealybugs
  • Root rot

Treatment Recommendations

  • Organic insecticidal soap or neem oil can be effective for pest control
  • Ensure the plant is in well-drained soil
  • Fungicides may be necessary for severe fungal infections

Notable Traits & Uses

  • Famous for its large and unpleasant-smelling flower
  • Valued for its unique inflorescence and is often sought after by collectors of unusual plants
  • Its dramatic flower, though short-lived, makes for an eye-catching display in appropriate settings

Conservation & Availability

Wild Population Status

  • There are no major conservation concerns currently noted for Amorphophallus haematospadix, but habitat destruction in Southeast Asia poses a potential threat to its wild populations

Market Availability

  • Not commonly found in mainstream markets but may be available through specialty nurseries or aroid enthusiasts
  • Considered rare in cultivation, especially outside its native range

References & Resources

Further Reading

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