Ulearum donburnsii Croat & Feuerst.

• Genus: Ulearum
• Botanical Background: Described by botanists Croat and Feuerstein, this species has drawn interest from experts in aroid taxonomy due to its unique morphological traits and historical botanical significance.

• Geographical Range: This species is native to select tropical forest regions, where its presence is limited to specific locales in South America.
• Environment: It naturally thrives in humid, shaded understories with rich, well-draining soils. The species flourishes in warm, stable climates typical of tropical rainforests.

Leaves

• The leaves are broad and textured
• A heart or arrow-like shape
• Distinctive venation that enhances their ornamental appeal

Inflorescence (Spadix & Spathe)

• Ulearum donburnsii produces a noticeable spathe and spadix
• The spathe may display a pale green to white tone
• Scent is subtle, its structure plays a key role in attracting pollinators

Growth Habit

• This terrestrial species grows from a rhizome 
• Maintains a compact form, making it ideal for specialized tropical collections

Light Requirements

• Bright light

• Indirect light that mimics its natural shaded habitat

Watering & Humidity

• Regular watering is essential to keep the soil evenly moist
• High humidity levels support optimal growth

Soil & Potting Mix

• A rich, well-draining mix with organic matter is ideal
• Containers should allow for ample drainage to prevent root rot

Temperature & Fertilizer

• Optimal growth occurs in temperatures ranging from 65 to 80°F
• Light feeding schedule during the growing season will support its health

Division

• Propagation is most successfully achieved by dividing the rhizomes that maintains genetic integrity and is the preferred technique among enthusiasts

Seeds

• Seed propagation is less common due to low viability and slower germination rates

Typical Issues

• Spider mites, mealybugs
• The risk of root rot from overwatering

Treatment Recommendations

• Insecticidal soap works well for pest control
• Proper drainage and balanced watering prevents disease

• Named in honor of Don Burns has become a topic of interest for its rare occurrence and unique leaf structure
• Ecological role in tropical habitats adds to its botanical allure

• Enthusiasts prize Ulearum donburnsii for its unusual appearance and ornamental value
• Sought-after species for specialized tropical and aroid collections

Wild Population Status

• Known from Limited natural populations and may face habitat loss
• Conservation initiatives are in place to monitor and protect its wild stands

Market Availability

• Rarely available in mainstream horticulture
• Making it a prized specimen for dedicated collectors