Anthurium clavigerum

A canopy climber from tropical America

Anthurium clavigerum ranges from Honduras through western Amazonia. It begins on trees and can develop into a large climbing hemi-epiphyte, becoming established low in the canopy or along forest edges in wet tropical forest. Its roots encounter both humid bark and, as the plant develops, more stable contact with the ground.

Care for Anthurium clavigerum

• Light: Give bright filtered light so the climbing stem remains compact. Acclimated leaves tolerate gentle morning or evening sun.
• Watering: Water when the surface begins to dry while the centre remains slightly moist. Soak the pot and moisten the support lightly if aerial roots are actively entering it.
• Humidity and airflow: Maintain 65–80% relative humidity with airflow along the stem, support and leaf undersides.
• Temperature: Keep at 20–28 °C and above 18 °C at night. Warm roots and a stable support encourage continuous growth.
• Substrate and repotting: Keep the nursery planting of Anthurium clavigerum stable while light, temperature and watering settle, and follow the climbing stem and attached roots for signs of activity; repot when the plant is growing and its drying rate is familiar. Repot later into a snug, stable pot with coarse bark, coco chips, coir and pumice; install the support without damaging roots.
• Feeding: Feed lightly with a complete fertiliser during stem, leaf and aerial-root growth. Flush bark-based mixes with plain water every 4–6 weeks.
• Large climbing growth and propagation: Provide a strong pole or plank early because the climbing stem and divided mature leaves become heavy. Wipe each mature lobe gently and propagate from a node-bearing stem section with an established aerial root.

Yellow leaves, dry roots and pests

• A limp leaf or yellowing growth: A dry coarse mix, low pot weight and drooping divided leaves indicate thirst; water through the pot and let it drain. A heavy damp base with soft yellow growth points to root failure or a stem held too deeply in the mix.
• Failed roots at the centre of the pot: Keep firm roots at the base and along supported nodes. Remove hollow or slippery sections using sharp scissors cleaned first, hold the stem above a coarse snug mix and secure the active roots to a support strong enough for mature growth. Before cutting Anthurium clavigerum, photograph the root system and confirm failure by texture; preserve every firm section, sterilise the tool between cuts and keep the crown stable while new roots develop.
• Fresh brown edging: Brown tips may be linked to rapid drying at the support, salts or dry air around exposed roots. Check pot and support separately, flush the root zone and moisten only areas carrying active roots.
• Tracking a new leaf spot: Dry rub marks form where leaves press against a support or wall. Isolate the plant if a spot is wet, yellow-edged or enlarging; keep foliage dry and photograph the edge daily.
• A crown that has stopped advancing: Smaller divided leaves, stretched stem sections or a leaning plant show that light or support is inadequate. Give bright filtered light and 20–28 °C, strengthen the support early and keep each new aerial root in contact.
• Checking the newest leaf for pests: Thrips scar soft new lobes; scale and mealybugs hide at the many vein junctions, nodes and ties. Take a close look at each leaf section as well as the climbing stem. Isolate, clean the plant and support. Apply a product labelled for the pest to the nodes, ties and leaf sections where pests were found and use the product’s stated timing for follow-up applications while checking weekly for four weeks.
• Support becoming unstable: Large divided leaves can loosen a light support or pull it towards the pot edge. Anchor the support before the next leaf expands and retie the stem while it remains flexible.

Pet risk from Anthurium clavigerum

• Not pet-safe. This plant contains calcium oxalate crystals that can cause immediate pain and irritation if chewed.

The name Anthurium clavigerum

The genus name Anthurium combines Greek anthos, “flower”, and oura, “tail”, referring to the tail-like spadix. Heinrich Wilhelm Schott established the genus in 1829 in Wiener Zeitschrift für Kunst, Litteratur, Theater und Mode, volume 3, page 828.

Clavigerum means “club-bearing”, from Latin clava, “club”, and -ger, “bearing”. Eduard Friedrich Poeppig described Anthurium clavigerum in 1845 in Poeppig and Endlicher’s Nova Genera ac Species Plantarum 3: 84.