Rhaphidophora hongkongensis is part of the Araceae family and its native range is Assam to S. China and Indo-China.
It is a liana with a thick stem, leaf blade is typically obliquely elliptic and distichous (arranged alternately in two opposite vertical rows), aerial roots allow the plant to shingle up host trees. This variegated form has splashes of creamy white, pale yellow, or mint green variegation. You could add a moss board or totem to support this plant.
Genus name comes from the Greek ‘rhaphido’ meaning needle and ‘pherô’ meaning I bear; this refers to the macroscopic needle-like unicellular trichosclereids present in tissues - the purpose of which is to protect the plant from herbivores. Specific epithet means ‘from Hong Kong’.
Light: Rhaphidophora hongkongensis variegata thrives in bright, indirect light, mimicking its natural habitat where it grows as an understory climber. Direct, harsh sunlight must be rigorously avoided, as it can easily scorch the delicate variegated sections of the leaves, leading to unsightly brown, crispy patches or a significant loss of its vibrant coloration. Conversely, insufficient light may result in slower growth, reduced variegation, and the plant potentially reverting to an all-green form. For optimal conditions in a typical UK home, a position near an east-facing window or a few metres away from a south or west-facing window with sheer curtains provides ideal lighting.
Water: The potting mix should be kept consistently moist but never waterlogged. It is crucial to allow the top 2-3 cm (approximately 1 inch) of the soil to dry out slightly between waterings. Ensuring the pot has excellent drainage is paramount to prevent root rot, which can be a common issue, especially given the potentially cooler and damper indoor environments in the UK during certain seasons. Reduce watering significantly in autumn and winter, as the plant's growth naturally slows down.
Soil: An airy, chunky, and well-draining potting mix is essential for Rhaphidophora hongkongensis variegata, though it should also retain some moisture. A specialized aroid mix, incorporating components such as coco coir, perlite, orchid bark, and horticultural charcoal, is highly recommended to provide the necessary aeration and drainage while maintaining adequate hydration. A slightly acidic soil pH, between 5.5 and 6.5, is generally preferred.
Fertilising: During its active growing period in spring and summer, a balanced, diluted liquid fertiliser should be applied every four weeks. It is important to reduce or completely cease fertilising during the autumn and winter months when the plant's growth slows down. Overfeeding can lead to root burn, so always adhere strictly to dilution recommendations.
Temperature: This plant prefers warm and stable temperatures, ideally ranging between 20°C and 28°C (68°F and 82°F). It is vital to shield it from cold draughts and sudden temperature fluctuations, which can stress the plant and cause leaf damage, particularly in UK homes during colder periods. Temperatures falling below 16°C (60°F) may hinder growth, while sustained temperatures below 10°C (50°F) can lead to significant damage.
Humidity: High humidity levels are profoundly beneficial for Rhaphidophora hongkongensis variegata, with ideal levels being above 60%. To maintain optimal conditions, particularly during drier indoor periods in the UK (often due to central heating), consider using a humidifier nearby or placing the plant on a pebble tray filled with water, ensuring the pot is not submerged. Regular misting can also offer some benefit, though a humidifier provides more consistent humidity.
Growth Habit: This Rhaphidophora exhibits a vigorous climbing growth habit, with new leaves emerging and stretching upwards. In its juvenile stage, it often displays a "shingling" behaviour, where leaves lie flat against a surface. As it matures, with proper support, it will climb, and its leaves may increase in size and develop more prominent variegation. It can reach impressive lengths indoors with appropriate support such as a moss pole, coir pole, or trellis.
Toxicity: Like many members of the Araceae family, Rhaphidophora hongkongensis variegata is toxic if consumed by humans or pets.