Amorphophallus sumawongii (Bogner) Bogner & Mayo

• Genus: Amorphophallus
• Botanical Background: Described by noted botanists Bogner and Mayo, who contributed significantly to the modern classification of aroids and their work helped popularize the appreciation of this genus among both botanists and horticulturists.

• Geographical Range: Native to the tropical regions of Southeast Asia.
• Environment: Thrives under conditions of high humidity and rich, well-draining soils; adapted to shaded forest floors where indirect light filters through the canopy, and where periodic rains ensure a continuously moist substrate.

Leaves

• Large and lobed with a leathery texture and a vibrant green coloration
• Unique venation and subtle patterning

Inflorescence (Spadix & Spathe)

• Prominent spadix surrounded by a contrasting spathe
• Spathe is often a deep, rich color with variations that can range towards purples and reds
• Spadix may emit a faint, intriguing odor that aids in attracting specialized pollinators

Growth Habit

• Terrestrial and emerges from a stout rhizome
• Overall structure is robust, with an explosive flowering phase followed by a period of dormancy

Light Requirements

• Bright, indirect light
• Benefits from a location that mimics the dappled sunlight of a forest understory

Watering & Humidity

• Regular watering is essential to keep the soil evenly moist
• High ambient humidity further supports its tropical nature

Soil & Potting Mix

• A rich, well-draining potting mix that incorporates components such as peat, perlite, and compost
• Containers should have ample drainage

Temperature & Fertilizer

• Temperatures range from warm to very warm, avoiding any frost condition
• Balanced, diluted fertilizer applied monthly supports

Division and Cuttings

• Most commonly achieved through division of the rhizome
• Ensure that each segment contains at least one viable growth bud to promote successful re-establishment

Seeds

• Less common, viable seeds require warm conditions and a period of stratification

Typical Issues

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

Treatment Recommendations

• Organic insecticidal soap
  
• Improving air circulation and adjusting watering practices

• Inspired local folklore and is sometimes linked to ritualistic symbolism in its native region
• Dramatic bloom is noted for its ephemeral yet impactful display

• Prize for its unusual inflorescence and the rarity of its flowering event
• Architectural foliage and seasonal bloom cycle add considerable intrigue to specialized plant collections

Wild Population Status

• No widespread reports of severe decline

Market Availability

• Rare find in the horticultural market
• Usually available through specialized nurseries that cater to the exotic and unusual aroid community