Rhaphidophora tetrasperma variegata 'Green on green'

Origin and background of Rhaphidophora tetrasperma variegata 'Green on green'

Green-on-green marbling occurs in cultivated Rhaphidophora tetrasperma. The species itself grows in southern Thailand and Peninsular Malaysia, climbing through forests on sandstone and granite from about 190 to 760 metres.

Beneath that cultivated pattern is the same narrow-range species found in Thai and Malaysian forests.

Care for a climbing houseplant

Growth and support: Rhaphidophora ‘Green on green’ develops compact growth and larger divided leaves when it climbs a vertical support in bright, filtered light. Once acclimatised, the plant can take a little gentle sun, although abrupt high light can still scorch the paler green sectors. Use moderate feeding during active growth and keep the climbing stem in contact with a rough support. If taking a cutting, choose a stem section with a node, where the new shoot will form, and visible contrasting green sectors.

Roots and substrate: Use an open aroid mix with bark and mineral particles that preserve open air spaces. Water the complete root ball, then let it partly dry before watering again.

Troubleshooting Rhaphidophora tetrasperma variegata 'Green on green'

Rhaphidophora ‘Green on green’ has integrated sectors in different shades of green. General paling between veins, widespread yellowing or random bleached patches is stress, not improved variegation. Compare several healthy leaves and the stem pattern. Check roots and light before changing nutrition, since both wet roots and abrupt sun can distort the colour.

An all-green shoot that continues without contrasting sectors has reverted. Stronger light may change contrast but cannot create the missing pattern in that growing point. Cut a persistently reverted shoot back to visibly patterned stem tissue if enough healthy vine remains. New shoots can still vary, so assess more than one leaf before making a cut.

If several leaves yellow while the mix remains wet and dries slowly, inspect the roots for loss. Limp growth above a dry throughout root ball calls for thorough rewetting. Thrips produce silver scars, black specks and distorted new leaves, while mites create fine stippling. Separate an affected vine, then treat the stem joints and leaf undersides as directed. Preserve firm leaf-bearing stem joints that retain the pattern if root or stem rot requires rescue cuttings.

Rhaphidophora tetrasperma variegata ‘Green on green’ 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.

Where does the name Rhaphidophora tetrasperma come from?

Rhaphidophora combines Greek rhaphis, meaning needle, with phorein, meaning to bear, referring to the needle-like raphide crystals in its tissues. Tetrasperma combines Greek tetra, four, with sperma, seed.

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

Joseph Dalton Hooker first described Rhaphidophora tetrasperma in 1893 in The Flora of British India, volume 6, page 548.