Rhaphidophora decursiva 'Dragon Tail'

Natural origin and cultivated background of Rhaphidophora decursiva 'Dragon Tail'

Rhaphidophora decursiva ranges from the Indian subcontinent through Bangladesh and the eastern Himalaya to southern China and Indochina.

It grows in seasonally wet tropical and evergreen forests, often in valleys, where young vines can travel across the ground and rocks before climbing trees. 'Dragon Tail' is the commercial name used for cultivated plants of this species.

Growing Rhaphidophora decursiva 'Dragon Tail' indoors

• Support: Use a rigid pole, plank or trellis anchored in a heavy pot. Tie the stem with broad soft ties and keep roots and new leaves free.
• Space: Leave clear room around the plant for the large mature leaves, and extend the support before the vine reaches the top.
• Light: Bright indirect light suits the plant. Introduce direct sun gradually.
• Watering: Water when the large pot feels lighter and part of the mix has dried. Water deeply, check that the centre is wet and let excess water drain.
• Potting mix and stability: Use a coarse mix that keeps its structure and increase pot size gradually. A broad or weighted pot helps keep the large plant stable.
• Warmth and humidity: Keep the vine warm and away from cold windows or draughts. Normal household humidity is usually suitable; gentle airflow helps large leaves dry after cleaning.
• Feeding and cleaning: Feed according to the fertiliser label while new leaves and stems are growing. When growth pauses, stop feeding and wait for the mix to dry further before watering. Wipe large leaves with a damp cloth when they collect dust.
• Pruning, repotting and propagation: Shorten the stem just above a node if the plant becomes too tall. Repot when roots are crowded, the mix has compacted or the pot becomes unstable. Take propagation cuttings with at least one healthy node.

Common issues with Rhaphidophora decursiva 'Dragon Tail'

• An established vine starts producing smaller whole leaves: After a cut, loss of support or major drop in light, the new shoot may produce smaller, whole leaves. Give the shoot a firm support and bright indirect light as it establishes.
• The support bends or the pot starts to tip: The current setup is no longer stable under the plant's weight. Use a heavier pot or a stronger, securely anchored support, and move the vine in stages to protect attached roots.
• Yellowing spreads while the lower pot remains wet: Take the plant out of its pot and check the roots throughout the root ball. Use a clean tool to cut away each soft or dark root and any damaged lower stem. Finish in firm healthy tissue, discard the rotten material, use a smaller pot when needed and refill with fresh, coarse potting mix.
• Leaf sections show silver scars, black dots or torn new growth: Inspect the folds and the places where leaves meet the stem for thrips. Isolate the plant and use a product labelled for thrips on indoor ornamental plants. Repeat treatment according to the schedule printed on the label.

Rhaphidophora decursiva ‘Dragon Tail’ is toxic to people and pets

• Keep this plant away from children, cats and dogs.
• Its leaves and stems contain insoluble calcium oxalate crystals, which can irritate the mouth, throat, skin and eyes.
• Chewing may cause burning pain, drooling, swelling, vomiting or difficulty swallowing. Contact a veterinarian or medical professional after exposure, especially if swelling or breathing problems occur.

How did Rhaphidophora decursiva get its name?

Rhaphidophora combines Greek rhaphis, meaning needle, with phorein, meaning to bear, referring to the needle-like raphide crystals in its tissues. The Latin epithet decursiva means running down and describes leaf tissue that continues along its supporting axis.

Justus Carl Hasskarl established the genus Rhaphidophora in 1842 in Flora, volume 25, issue 2, supplement 1, page 11.

William Roxburgh first described it as Pothos decursivus in 1820 in Flora Indica, volume 1, page 456. Heinrich Wilhelm Schott later placed it in Rhaphidophora as Rhaphidophora decursiva in 1857 in Bonplandia (Hannover), volume 5, page 45.