Calathea ornata Sanderiana has large dark green, glossy leaves with white, fish-bone-like stripes that have pink overtones. The leaves are purple underneath.
It is one of the larger Calathea varieties and makes a fantastic statement house plant.
White-striped wonder! The Sanderiana has beautiful pink stripes along its foliage, however if you notice these fading to white, the plant is receiving too much sunlight. Move to a more shaded location.
Living on the edge! Crisping up at the edges of leaves is a watering issue not humidity. This plant is sensitive to chlorine in tap water, so allow it to stand overnight to diffuse before use, and maintain an even moist soil. Brown leaf tips are common.
What's got you down? Leaf droop happens naturally during the day with some Calathea, they then sit more upright at night, however if leaf droop is combined with dry air and soil, the plant needs more water and humidity.
Light
As with most variegated plants, Calathea need plenty of diffused light. Direct sunlight will cause the leaves to fade and lose their markings. They can tolerate some degree of shade, but the more indirect light, the finer the foliage.
Watering
Calathea must be kept in damp soil at all times, but definitely do not allow the plant to sit in water or in very wet soil. Think 'little and often' as a watering policy.
Prefers warm to high temperatures, ideally between 18-23°C, but can cope with as low as 15°C. Avoid draughts and ensure the plant has reasonable ventilation.
Humidity
High humidity levels are a must. Mist frequently to improve humidity conditions and pop it near the shower from time-to-time to give it an extra boost.