The Calathea Musaica, also known as the “Network Plant,” is a captivating tropical houseplant. It is revered for its unique foliage, which displays an intricate mosaic-like pattern of light and dark green. Native to the rainforests of Brazil, it thrives in warm, humid conditions and indirect light, mimicking its natural understory habitat. While it has a reputation for being somewhat particular, the Calathea Musaica can be a rewarding addition to an indoor plant collection with proper care.
Optimal Growing Conditions
Calathea Musaica plants require specific environmental conditions to truly flourish, mirroring their native tropical rainforest environment.
Light
Calathea Musaica thrives in bright, indirect light, similar to the dappled sunlight it would receive under a dense tree canopy. Placing the plant several feet away from an east or north-facing window is often ideal, as these locations provide ample light without harsh direct sun exposure. Direct sunlight can scorch its delicate leaves, leading to brown spots and a fading of its distinctive mosaic patterns.
Temperature
Maintaining a stable temperature is important for the Calathea Musaica. The plant prefers temperatures between 65°F (18°C) and 80°F (27°C). Temperatures below 60°F (15°C) can hinder growth, and the plant may cease to grow if temperatures consistently drop below this threshold. It is important to keep the plant away from drafts, such as those from open windows, heating vents, or air conditioning units, as sudden temperature fluctuations can cause leaves to wither or brown.
Humidity
High humidity is a critical factor for the Calathea Musaica, as it originates from humid tropical environments. The plant appreciates humidity levels ranging from 50% to 80%, with around 60% being a comfortable medium. Low humidity often leads to common problems like crispy leaf edges or tips. To increase humidity, consider placing the plant on a pebble tray filled with water, grouping it with other plants, or using a humidifier. While misting can offer a temporary boost, it often does not provide the consistent humidity levels these plants require.
Watering and Soil Needs
Proper watering practices and an appropriate soil mix are fundamental to the health of your Calathea Musaica.
Watering
Calathea Musaica prefers consistently moist, but not soggy, soil. A good approach is to water when the top inch or two of the soil feels dry to the touch. Overwatering can lead to root rot, while underwatering can cause leaves to curl or wilt. Using filtered, distilled, or rainwater is highly recommended, as Calatheas are sensitive to the fluoride, chlorine, and other minerals often found in tap water, which can cause brown leaf tips. Ensure the pot has proper drainage to prevent water from sitting at the bottom.
Soil
The ideal soil mix for Calathea Musaica is one that is well-draining yet retains sufficient moisture. A suitable blend often includes a peat-based potting mix amended with perlite or vermiculite to improve drainage and aeration. Good aeration is important for healthy root development and helps prevent waterlogging. An African violet mix can also be a good ready-to-use option.
Fertilizing
Calathea Musaica is not a heavy feeder, so fertilizing should be done sparingly. During the growing season (spring and summer), a balanced liquid fertilizer diluted to half strength applied monthly or every few weeks is generally sufficient. Avoid fertilizing during the plant’s dormancy in fall and winter. Over-fertilization can harm the plant’s delicate roots, potentially causing root burn.
Repotting Your Calathea Musaica
Repotting is an infrequent but necessary task for the Calathea Musaica.
Signs that indicate your Calathea Musaica may need repotting include roots emerging from the drainage holes, the plant becoming top-heavy, or stunted growth. These plants are relatively slow-growing and do not mind being somewhat root-bound, so repotting is typically only needed every two to three years. The best time to repot is during spring or early summer, as the plant is entering its active growth phase.
When repotting, select a new pot that is only one size larger, or about 2-3 inches wider in diameter, than the current one. Gently remove the plant from its old container, taking care not to disturb the roots excessively. Inspect the roots for any signs of rot or damage, trimming any unhealthy portions. Refresh the soil with a new, appropriate potting mix, ensuring the plant is set at the same depth as it was previously. After repotting, water thoroughly and place the plant in its usual spot, allowing it to recover from the transplant shock.
Troubleshooting Common Problems
Addressing common issues promptly can help keep your Calathea Musaica healthy and vibrant.
Curling leaves often signal underwatering or insufficient humidity. If the soil is dry, deep watering is necessary, and increasing the ambient humidity as described in Section 2.C can help prevent future curling. Crispy or brown leaf edges are typically a sign of low humidity or the use of tap water with high mineral content. Improving humidity levels and using filtered or distilled water can alleviate this.
Yellowing leaves can indicate overwatering, where the soil remains too wet, or sometimes too much direct light. Adjusting your watering schedule as outlined in Section 3.A to allow the topsoil to dry slightly between waterings is important. Faded leaf patterns usually suggest the plant is receiving too much direct light. Moving the plant to a location with bright, indirect light will help restore its vibrant coloring. Common pests include spider mites, mealybugs, and thrips, which can be managed by wiping leaves with a damp cloth, using insecticidal soap, or applying neem oil.