Symplocarpus koreanus Joon S.Lee, Seon H.Kim & S.C.Kim

• Genus: Symplocarpus
• Botanical Background: Contributes to the rich diversity of the Araceae family and is part of ongoing studies into the evolution and adaptation of wetland plants

• Geographical Range: Endemic to Korea and is typically found in lowland wetland regions where moisture abounds
• Environment: Thrives in marshy areas with rich, organic soils, moderate to high humidity, and seasonal flooding that supports its early spring growth cycle

Leaves

• Broad, palmate leaves
• Slightly rough texture 
• Deep green coloration

Inflorescence (Spadix & Spathe)

• Consists of a central spadix encased in a protective spathe that ranges in color from green to purplish
• Emits a strong odor, essential for attracting specific pollinators

Growth Habit

• Terrestrial species that grows from a rhizome, allowing it to spread slowly in its native wetland habitat

Light Requirements

• Bright, indirect light or partial shade, similar to its natural woodland edge settings

Watering & Humidity

• Prefers consistently moist soil
• High humidity levels are beneficial during its growing season

Soil & Potting Mix

• Rich, organic potting mix that retains moisture yet drains well is ideal
• Planting in containers that accommodate its spreading rhizome

Temperature & Fertilizer

• Prefers cooler temperatures typical of early spring
• Balanced, slow-release fertilizer applied during active growth supports healthy development

Division

• Most effective propagation method is through rhizome division
• Gently separating sections of the rhizome during the dormant period can yield new plants

Seeds

• Less common
• Require specific germination conditions that mimic the natural wetland environment for successful growth. 

Typical Issues

• May invite pests like spider mites
• Overwatering can lead to fungal issues, and poor air circulation 

Treatment Recommendations

• Natural remedies such as neem oil
• Ensuring proper drainage and using organic fungicides can help prevent and treat fungal diseases

• Holds cultural and ecological significance in Korea as part of local wetland ecosystems
• Early emergence makes it a unique indicator of seasonal change

• Unusual inflorescence and lush foliage, add a distinctive touch to native plant collections and wetland gardens

Wild Population Status

• Not widely documented as endangered
• Endemic nature underscores the importance of habitat conservation and careful management of wild populations

Market Availability

• Considered relatively rare in cultivation and is typically available through specialist native plant nurseries