The Calathea Ornata Sanderiana, commonly known as the Pinstripe Calathea, is a popular houseplant recognized for its striking foliage.
Distinctive Features
The Calathea Ornata Sanderiana displays dark green leaves with prominent pink pinstripes. The undersides of its leaves feature a delicate purple hue. This unique coloration gives the plant its common name, the Pinstripe Calathea. This plant exhibits nyctinasty, a phenomenon where its leaves move in response to light. They unfurl during the day to maximize light absorption and fold upwards at night, resembling hands in prayer.
Comprehensive Care Guide
Light Requirements
Calathea Ornata Sanderiana thrives in bright, indirect light, mimicking its natural habitat on the rainforest floor. Direct sunlight should be avoided as it can cause the leaves to scorch and the pink stripes to fade. An ideal placement is near an east or north-facing window, or a few feet away from a south or west-facing window with sheer curtains to diffuse intense light. Consistent indirect light promotes healthy foliage.
Watering Practices
Maintain consistent soil moisture without waterlogging. Water when the top inch or two of the soil feels dry. Overwatering can lead to root rot, so ensure good drainage. Using distilled, filtered, or rainwater is recommended, as Calatheas are sensitive to chemicals like fluoride and chlorine in tap water, which can cause leaf browning. During winter months, reduce watering frequency.
Humidity Needs
High humidity is a requirement for Calathea Ornata Sanderiana, reflecting its tropical origins. Insufficient humidity can result in brown leaf tips and edges. To increase humidity, place it on a pebble tray, use a humidifier, or group it with other plants. Misting provides temporary relief but is not a long-term solution.
Soil and Fertilization
A well-draining yet moisture-retentive potting mix is suitable for Calathea Ornata Sanderiana. This plant benefits from regular fertilization during its active growing season, typically spring and summer. A balanced liquid fertilizer, diluted to half or quarter strength, can be applied every 2 to 4 weeks. Fertilization should be reduced or stopped entirely during the dormant winter months.
Temperature Considerations
Calathea Ornata Sanderiana thrives in warm temperatures, ideally ranging between 65°F and 80°F (18°C to 27°C). It is sensitive to sudden temperature fluctuations and cold drafts. Place the plant away from air conditioning vents, heating sources, and drafty windows to maintain a stable environment. Consistent temperatures within its preferred range support robust growth.
Troubleshooting Common Issues
Brown leaf tips or edges often indicate low humidity or inconsistent watering. Increase ambient humidity and maintain a consistent watering schedule using purified water. Yellowing leaves can signal overwatering or a nutrient deficiency. Allow the top layer of soil to dry slightly between waterings and ensure adequate drainage.
Curling leaves typically indicate underwatering or insufficient humidity; thorough watering and increased humidity usually resolves this. Faded pinstripes suggest the plant is receiving too much direct light, which can bleach the coloration. Moving the plant to a location with bright, indirect light will help restore its leaf patterns. Inspect the plant regularly for common pests like spider mites, mealybugs, and aphids, treating infestations with insecticidal soap or neem oil.
Propagation and Repotting
The most common method for propagating Calathea Ornata Sanderiana is through division, ideally performed during repotting in spring when the plant is actively growing. To propagate, carefully remove the plant from its pot and gently separate the rhizomes. Pot these divisions in fresh, well-draining soil and water them thoroughly.
Repotting is generally needed every 1 to 2 years or when the plant becomes root-bound. Spring is the optimal time for repotting, allowing the plant to recover and establish itself in its new container. Select a pot that is only slightly larger than the previous one, and handle the roots gently.
Pet and Human Safety
Calathea Ornata Sanderiana is generally considered non-toxic to pets and humans. This makes it a suitable choice for households with animals or young children. While the plant is safe, prevent ingestion to avoid any potential mild digestive upset.