Amorphophallus symonianus Hett. & Sizemore

• Genus: Amorphophallus
• Botanical Background: Described by Hett. & Sizemore, this species has attracted the attention of botanists focusing on tropical flora and its discovery has contributed to a deeper understanding of aroid diversity and evolutionary relationships within the group.

• Geographical Range: Indigenous to the tropical rainforests of Southeast Asia, where it occupies niches within dense, humid forest ecosystems.
• Environment: Thrives under conditions of high humidity and warm temperatures and favors well-drained, organically rich soils and typically grows in shaded understory habitats with moderate light filtered through the forest canopy.

Leaves

• Large, lobed leaves that are robust
• Dark green in color, featuring a network of prominent veins

Inflorescence (Spadix & Spathe)

• Prominent spadix surrounded by an expansive spathe
• Spathe often displays a mix of subtle hue
• Inflorescence is known to emit a distinctive scent aimed at attracting specialized pollinators

Growth Habit

• Terrestrial and grows from a tuber-like corm
• Seasonal cycle includes periods of dormancy followed by rapid vegetative growth accompanied by the development of its impressive inflorescence

Light Requirements

• Best in bright, indirect light
• Direct sunlight should be avoided as it can damage its foliage

Watering & Humidity

• Regular watering is essential
• Allow the topsoil to dry slightly between waterings to prevent rot
• Also benefits from high ambient humidity

Soil & Potting Mix

• A well-draining, organic-rich potting mix
• Adding components such as perlite or orchid bark can help improve drainage

Temperature & Fertilizer

• With temperatures above 15°C (60°F)
• Balanced liquid fertilizer applied monthly

Division

• Most commonly achieved by dividing the corm during the dormant phase

Seeds

• Less common in cultivation, viable seeds require warm temperatures and consistent moisture for successful germination

Typical Issues

• Spider mites and mealybugs
• Occasional fungal infections such as root rot

Treatment Recommendations

• Organic insecticidal soaps
• Ensuring proper drainage can address fungal concerns
• Targeted chemical treatments may be used carefully

• Noted for its unusual flowering cycle
• Ecological interactions it fosters through its specialized pollination mechanisms

• Prize for its rarity and dramatic floral display
• Distinctive appearance makes it a conversation starter and a valuable specimen

Wild Population Status

• Wild populations of this species are not extensive
• Habitat loss from tropical deforestation may pose risks

Market Availability

• Remains relatively rare
• Typically available only through specialized nurseries or botanical societies