Anthurium chamberlainii

Rediscovered in Venezuela’s Mérida forests

Anthurium chamberlainii was known for decades only from cultivated material before it was rediscovered in Mérida, Venezuela. Wild plants were recorded in wet montane forest at about 1,500–1,800 m, a humid Andean setting with mild temperatures and regular cloud or rain. It grows there as a robust terrestrial subshrub beneath forest cover.

Care for Anthurium chamberlainii

• Light: Set in bright diffuse light, away from hot midday sun. Broad leaves benefit from even illumination and a cool position behind glass.
• Watering: Maintain light, even moisture and water when the surface starts to dry. Empty the outer pot after each thorough watering.
• Humidity and airflow: Aim for 65–80% relative humidity with steady air circulation around the leaf bases and emerging growth.
• Temperature: Keep at 18–26 °C with nights near 18–20 °C. Extended hot nights can reduce leaf size and vigour.
• Substrate and repotting: For the first growth cycle, leave Anthurium chamberlainii at its current planting depth and monitor how the moist but aerated terrestrial root zone responds between thorough waterings; repot once the root system is active and handling stress is lower. Later, choose a stable pot 2–3 cm wider and an airy blend of bark, coir and mineral drainage.
• Feeding: Use a weak complete fertiliser during active growth and a lower dose whenever growth slows. Flush the pot with plain water every 3–4 weeks.
• Large leaves and propagation: Use a stable floor pot before the long petioles become top-heavy and wipe the broad blades with a damp cloth. Propagate from rooted basal growth or a node-bearing stem section.

Root stress, leaf damage and slow growth

• Yellow leaves or a sudden droop: A container that feels much lighter than usual and dry root zone point to thirst; rehydrate the mix thoroughly and empty the outer pot. A container holding moisture for too long, damp surface and soft yellowing point to root stress, especially after cool wet conditions; stop the routine and look closely at the deeper roots.
• Root texture and recovery: Healthy roots stay firm in a lightly moist, open mix. Remove soft or hollow tissue using a blade cleaned before every cut, keep any short base at the surface and use a stable snug pot with an air-rich mineral mix. Before cutting Anthurium chamberlainii, 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.
• Crisp tips and dry margins: Brown margins may record dry roots or accumulated salts, while warm stagnant nights can also damage montane foliage. Check deeper moisture and flush the mix with low-mineral water, then restore air exchange around the leaves.
• Fixed marks or spreading lesions: A sun or impact mark stays dry and holds the same outline. A wet lesion with a moving yellow edge needs isolation; keep foliage dry, photograph the edge and seek advice if it keeps spreading.
• A paused growth point: Weak light can slow the crown even when moisture looks correct. Keep bright diffuse light and a daytime range of 18–26 °C; during warm periods, improve airflow and let root moisture guide watering.
• Pests on soft new growth: Silver marks and black specks on a young leaf point to thrips; inspect petiole bases and lower leaf surfaces closely. Isolate, remove visible pests, apply a product labelled for the pest, repeat only at the interval given on the label and inspect the crown every seven days throughout the next month.
• Leaning or split leaf stalks: Long petioles can lean or split after the pot shifts. Stabilise the container before new growth gains weight and leave enough space for each broad blade to turn freely.

Keeping Anthurium chamberlainii away from pets

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

The name Anthurium chamberlainii

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.

Chamberlainii honours British statesman and horticulturist Joseph Chamberlain, at whose Highbury estate the plant was grown. Maxwell T. Masters described Anthurium chamberlainii in 1888 in The Gardeners’ Chronicle, series 3, volume 3: 462.