Philodendron attenuatum Croat

• Genus: Philodendron
• Botanical Background: Described by renowned botanist Thomas Croat whose extensive work with aroids at institutions such as the Missouri Botanical Garden has been pivotal in clarifying the taxonomy and diversity of the group.

• Geographical Range: Found in lowland and submontane forest environments in tropical rainforests where the climate is warm and consistently humid.
• Environment: Thrives in conditions with high humidity and filtered light and grows in organically rich, well-draining soils and favors a stable, warm climate typical of its native tropical setting.

Leaves

• Narrow, elongated leaves
• Glossy, deep green appearance
• Moderate texture
• Attenuate tips

Inflorescence (Spadix & Spathe)

• Modest spadix enclosed by a greenish-yellow to white spathe
• Not highly scented
• Adapted for pollination by specialized tropical insects

Growth Habit

• A climbing species that utilizes aerial roots to scale trees
• Grows from a rhizomatous base

Light Requirements

• Flourishes best in bright, indirect light
• Direct sunlight should be avoided as it may scorch the delicate leaves

Watering & Humidity

• Regular watering with intervals to let the top layer of soil dry between waterings
• Benefits from high humidity

Soil & Potting Mix

• A well-draining, peat-based potting mix enriched with organic matter
• A container that allows for adequate airflow to the root

Temperature & Fertilizer

• Ideal temperature range is 65°F to 80°F
• Balanced liquid fertilizer applied monthly during growing season

Division

• Through rhizome division or stem node cuttings

Stem Cuttings (if applicable)

• Include a portion of the aerial root in cuttings

Seeds

• Less common due to the slower germination process and the overall reliability of vegetative methods

Typical Issues

• Infestations of spider mites, mealybugs, and scale insects
• Root rot can occur if overwatered or kept in poorly draining soil

Treatment Recommendations

• Insecticidal soap or neem oil for pest control
• Avoiding overwatering to prevent fungal diseases and root rot

• Plays a modest ecological role in its native habitat by providing cover and support for various understory species

• Prized for its delicate, elongated leaves and climbing nature
• Ideal for vertical garden displays and modern interior design applications.

Wild Population Status

• Currently no major conservation concerns, however, the preservation of its natural tropical habitat remains important

Market Availability

• Relatively rare in commercial cultivation
• Acquired through specialty plant collectors and aroid societies