Amorphophallus atrorubens Hett. & Sizemore

• Genus: Amorphophallus 
• Botanical Background: Described by botanists Hett. and Sizemore. Their work contributed to a more detailed understanding of aroid diversity and has been influential in modern aroid taxonomy.

• Geographical Range: Native to tropical lowland forests of Southeast Asia, where rich biodiversity and humid conditions prevail.
• Environment: Naturally thrives in warm, moist environments with high humidity; favors well-drained, organic-rich soils under partial shade in densely vegetated areas.

Leaves

• Large and lobed
• Glossy texture and a deep green coloration
• Their broad form helps maximize light absorption in the dim understory of tropical forests
  

Inflorescence (Spadix & Spathe)

• Striking, featuring a dark red spathe paired with a contrasting spadix
• The structure is designed to attract specific pollinators and may emit a subtle, distinct scent

Growth Habit

• A terrestrial species, tuberous perennial
• Develops an underground tuber that supports its annual growth cycle

Light Requirements

• Thrives in bright, indirect light while avoiding harsh, direct sunlight

Watering & Humidity

• Consistent watering to keep the soil evenly moist is crucial
• High ambient humidity is ideal

Soil & Potting Mix

• A loose, well-draining potting mix rich in organic matter is recommended
• Containers should allow for good drainage to prevent root rot

Temperature & Fertilizer

• Maintain warm temperatures throughout the growing season
• Balanced fertilizer applied every few weeks during active growth

Division and Cuttings

• Most effective propagation technique is through division of the tubers
• Allows growers to maintain the genetic integrity of the species

Seeds

• Germination can be challenging; specialized conditions are needed

Typical Issues

• Aphids 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

• Garnered interest for its rare and dramatic inflorescence
• Its unique coloration and structural features have spurred local folklore and scientific curiosity

• Prized for its unusual appearance and rarity
• Its impressive inflorescence makes it a centerpiece in specialized tropical plant collections
  

Wild Population Status

• Due to its limited native range, conservation efforts are important
• Habitat loss in tropical regions poses a potential risk to wild populations
  

Market Availability

• Considered rare in cultivation
• Typically available only through specialized growers and aroid societies