Anthurium caldasii Méndez-Urb., Sierra-Gir., Castaño-Rub., Rodr.-Rey & Carlsen

• Genus: Anthurium
• Botanical Background: Described by Méndez-Urb., Sierra-Gir., Castaño-Rub., Rodr.-Rey, and Carlsen, this species is a relatively recent addition to the taxonomic records. Its discovery has contributed to a better understanding of the rich diversity within the Anthurium genus.

• Geographical Range: Native to Colombia, Anthurium caldasii is found in tropical montane and humid forest ecosystems where elevation and moisture converge to create a unique environment.
• Environment: Naturally thrives in areas with high humidity, well-drained soils enriched with organic matter, and moderate to high annual rainfall. These conditions support its robust growth and lush appearance.

Leaves

• Broad, heart-shaped
• Glossy and dark green
• Noted for their pronounced venation and a subtle play of lighter green hues along the margins

Inflorescence (Spadix & Spathe)

• Includes a vividly colored spathe—often showcasing shades of red or burgundy—paired with a modest spadix
• Scent is minimal
• Overall display is visually compelling and adapted for specialized pollination mechanisms

Growth Habit

• Can grow terrestrially or as an epiphyte
• Develops a rhizomatous base that aids in its steady growth and survival in varied forest conditions

Light Requirements

• Bright, indirect light
• Direct sunlight should be avoided as it can scorch the foliage

Watering & Humidity

• Regular watering is essential
• Emphasis on maintaining high humidity
• The soil should remain consistently moist but never waterlogged

Soil & Potting Mix

• A well-aerated, organic-rich potting mix that ensures excellent drainage is ideal
• Container with adequate drainage holes will help prevent root rot

Temperature & Fertilizer

• Prospers in warm environments, ideally between 65°F and 80°F
• Balanced fertilizer applied during the growing season will support its active growth phase

Division

• Rhizome division
• Allows for the separation of mature clumps to create new plants

Stem Cuttings (if applicable)

• Not Applicable

Seeds

• Generally requires controlled conditions and patience, as germination can be slow and variable

Typical Issues

• Infestations by spider mites and mealybugs
• Risk of fungal root rot if overwatering occurs

Treatment Recommendations

• Treat infestations with insecticidal soap or neem oil
• Ensure that the plant is not exposed to excessive moisture
• Good air circulation and proper watering practices can prevent most fungal issues
  

• Holds a special place among aroid enthusiasts for its unique appearance and ecological role in its native habitat
• Its discovery has spurred interest in further botanical research in the region

• Prized for its distinctive, glossy foliage and vibrant spathe, making it a coveted addition to curated tropical plant collections and specialized botanical displays

Wild Population Status

• With a limited natural range in Colombia, there are conservation concerns regarding habitat loss
• Efforts to preserve its native environment are crucial for the species' continued survival
  

Market Availability

• Not commonly found in general horticultural trade
• Available through specialized collectors and botanical exchanges, reflecting its rarity and high demand among enthusiasts