Cissus discolor, also known as the Rex Begonia Vine or sometimes the Begonia Vine (though this can be confusing as it's not a true Begonia), is a captivating vining plant prized for its stunning, velvety foliage. This Cissus species features heart-shaped leaves with a remarkable blend of colours and patterns. The leaves typically exhibit a deep green or bronze background with intricate silver markings, and the undersides are often a rich purple or reddish hue. It belongs to the Vitaceae family (the grape family).
The genus name Cissus comes from the Greek word kissos, meaning "ivy," referring to the plant's vining habit. Discolor means "different colours" or "variegated," aptly describing the plant's striking foliage.
Light: Cissus discolor thrives in bright, indirect light. Direct sunlight can scorch the delicate leaves and fade the vibrant colours, while insufficient light can lead to less pronounced variegation and slower growth. A spot near a window with filtered light, or a room with ample ambient light, is ideal.
Water: Allow the top inch or two of soil to dry out slightly between waterings. Water thoroughly when you do water, ensuring any excess drains away. Overwatering can lead to root rot, while allowing the plant to dry out too much can cause the leaves to wilt and brown.
Potting mix: A well-draining potting mix is essential. A standard houseplant potting mix, amended with perlite or orchid bark to improve drainage, is a good choice.
Fertilising: Feed your Cissus discolor with a diluted balanced liquid fertiliser every 4-6 weeks during the growing season (spring and summer). Reduce or stop fertilising during the autumn and winter months.
Temperature: Cissus discolor prefers typical room temperatures, roughly between 18-24°C (65-75°F). It is not frost-tolerant and should be protected from cold temperatures. Avoid placing it near draughts or heating/cooling vents.
Humidity: Cissus discolor appreciates higher humidity. Using a humidifier or placing the plant on a pebble tray filled with water can be very helpful. Low humidity can lead to crispy leaf edges.
Growth Habit: Cissus discolor is a vining plant that benefits from having a support to climb on, such as a trellis or moss pole. This will encourage larger leaves and more vigorous growth.
Toxicity: Cissus discolor is not known to be toxic to humans or pets.