Calathea lancifolia is a wonderfully showy houseplant. It has upright, lance-shaped leaves with long wavy edges that form in clumps, spreading slowly over time. The leaves are variegated with dark green strokes on a pale green background. The undersides are a burgundy red and velvety to the touch. The Rattlesnake plant is also sometimes known as Calathea insignis.
Calathea lancifolia – Rattlesnake Plant Care & Info Guide
Horty Hints
Shade-seeker! This striking plant does best away from direct sunlight. If you notice the green spots on its leaves fading, the plant needs more shade.
Might that be Mites? Calathea are very susceptible to spider mites, which are not usually spotted until it is too late. Routinely check on the underside of leaves to see if there is any webbing along the veining.
Wipe leaves with a damp cloth to remove accumulated dust. Do not use leaf shine as this will damage the foliage. Brown tips may occur.
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.
Temperature
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 or in the kitchen from time-to-time to give it an extra boost.
Feed
Apply a weak dose of a nitrogen-rich foliage fertiliser once or twice a month during the growing season.
Height & Growth Rate
Calathea lancifolia is a moderately fast growing plant, ultimately reaching heights of around 60cm.
Toxicity
This Calathea is considered non-toxic, therefore safe around children and pets.
Air Purifying
This plant filters airborne toxins and is part of our clean air plant collection.
Origin
Calathea lancifolia originates from the Tropical Americas.

































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