Arisaema stewardsonii Britton

• Genus: Arisaema
• Botanical Background: Described by the notable botanist Britton, the species has been of interest due to its unusual reproductive structures and adaptations to its moist habitat.

• Geographical Range: Indigenous to the Caribbean islands, where tropical and subtropical climates prevail.
• Environment: Naturally grows in moist, shaded forest understories with rich, well-drained soil; it favors high humidity and moderate temperatures that mirror its native conditions.

Leaves

• Heart-shaped or lobed
• Glossy texture and deep green color
• Their arrangement enhances the overall visual appeal of the species

Inflorescence (Spadix & Spathe)

• Notable for its prominent, hood-like spathe that often displays shades of green, yellow, and hints of red
• The flower structure emits a mild scent and attracts specialized insect pollinators

Growth Habit

• A terrestrial species that grows from a tuberous rhizome
• This growth habit supports both storage and vegetative reproduction

Light Requirements

• Bright, indirect light
• Indirect light that simulates the filtered light of its natural forest habitat

Watering & Humidity

• Regular watering is essential to maintain consistently moist soil
• High humidity is beneficial

Soil & Potting Mix

• A well-draining, organic-rich potting mix is recommended
• Use containers with ample drainage to prevent waterlogging

Temperature & Fertilizer

• Between 65°F and 80°F
• A balanced fertilizer applied during the growing season can support its growth

Division and Cuttings

• Most commonly done by dividing the tuberous rhizome during the plant's dormant period
• Each division should include a viable growing bud to ensure successful establishment

Seeds

• Require a warm, humid environment and stratification for successful germination

Typical Issues

• Spider mites, or mealybugs
• Fungal root rot if excessive moisture is maintained in the soil

Treatment Recommendations

• Both organic remedies such as neem oil and appropriate insecticidal soaps 
• Careful adjustments in watering practices, offer effective treatment

• Local folklore sometimes assigns mystical qualities to the plant because of its distinctive inflorescence
• Ecologically, it plays a role in attracting specific insect pollinators in its native habitat

• Valued for its rare and eye-catching spathe and ornamental foliage
• A prized specimen in tropical plant collections

Wild Population Status

• There are currently no major conservation concerns for this species; however, preserving its natural habitat remains important for continued ecological balance

Market Availability

• Moderately available through specialty nurseries
• It remains relatively rare in the commercial market, appealing to collectors and aroid enthusiasts