Amorphophallus sizemoreae Hett.

• Genus: Amorphophallus
• Botanical Background: Described by Hett., marking a significant contribution to our understanding of tropical aroids; botanists specializing in the Araceae family have since studied its morphology and ecology to better document its unique features.

• Geographical Range: Native to tropical regions, often found in forested environments within Southeast Asia.
• Environment: Thrives in humid, shaded understories with rich organic soil. It naturally grows in areas with consistent moisture, moderate temperatures, and well-draining substrates that support its tuberous growth habit.

Leaves

• Large, compound leaves
• Robust texture and vibrant green coloration
• Subtle variegation or unique patterning

Inflorescence (Spadix & Spathe)

• Striking inflorescence composed of a central spadix surrounded by a broad, colored spathe
• Spadix is known for its intricate patterns and potential odor as part of its pollination strategy

Growth Habit

• Terrestrial and emerges annually from a prominent tuber
• Exhibits an ephemeral foliage period followed by a dormant phase

Light Requirements

• Bright, indirect light

Watering & Humidity

• Regular watering is essential
• High ambient humidity 
• Soil should remain moist but not waterlogged

Soil & Potting Mix

• A well-draining, organic-rich potting mix
• Container with ample drainage is ideal to prevent root rot

Temperature & Fertilizer

• Warm temperature, generally above 65°F
• Balanced fertilizer applied during the growing season

Division and Cuttings

• Most common propagation technique is through the division of the tuber
• Careful separation of rhizome sections that include growing points

Seeds

• May be attempted, although viability and specific germination protocols are less documented compared to vegetative methods

Typical Issues

• Spider mites and mealybugs
• Fungal issues such as root rot

Treatment Recommendations

• Organic insecticidal soaps or neem oil
• Adjusting watering practices and using fungicide treatments

• Unusual appearance of its inflorescence has spurred interest among plant collectors and researchers
• May also assign folklore significance to its dramatic bloom cycle

• Prized addition to specialized collections
• Value it for its blend of botanical rarity and ornamental appeal

Wild Population Status

• Due to its specialized habitat, there are concerns regarding habitat loss and environmental pressures

Market Availability

• Considered rare in cultivation
• Typically available only from specialty nurseries and through plant societies