Calathea Network, also known as Calathea musaica, is a popular houseplant admired for its striking, mosaic-like foliage. This guide details the process of propagating Calathea Network plants.
When to Propagate Calathea Network
Propagate Calathea Network during its active growing season, typically spring and summer. This timing increases the likelihood of successful establishment for new divisions. Attempting propagation during fall or winter dormancy is less effective, as the plant’s energy focuses on survival rather than new growth. A healthy, mature mother plant with robust root development is most suitable for division, ensuring it has sufficient resources to recover and support new growth.
The Best Propagation Method: Division
Division is the most effective propagation method for Calathea Network plants. This approach is particularly suitable due to the plant’s rhizomatous growth habit, where new plantlets or “pups” emerge from underground stems. Unlike propagation methods such as stem or leaf cuttings, which are generally ineffective for this species as they require a node for root development, division allows for the separation of established sections that already possess their own root systems. Each separated clump can grow into an independent plant. This method ensures a higher success rate than attempting to root individual leaves or stems, which lack the necessary structures for sustained growth.
Step-by-Step Guide to Division
Gather new pots with drainage holes and a well-draining potting mix (e.g., peat, perlite, or orchid bark). Water the mother plant thoroughly the day before to loosen soil and minimize stress. Carefully extract the Calathea Network from its pot, gently loosening any roots from drainage holes.
After unpotting, gently remove excess potting mix from the root ball to expose natural divisions. Identify individual clumps by running your fingers through the roots. Carefully untangle these sections, pulling them apart where they naturally separate. If tightly bound, use a sharp, clean knife to make a precise cut through the rhizome, ensuring each new division retains healthy roots and foliage.
Pot each new division into its own container. Fill the bottom of the new pot with fresh potting mix, then center the plant division and fill around its roots, ensuring the plant is at the same depth as it was in the original pot. Avoid using a pot that is too large, as Calatheas prefer a snug fit. Water each newly potted division thoroughly until water drains from the bottom.
Post-Propagation Care
Following division, provide an optimal environment for the newly propagated Calathea Network plants to establish successfully. Place the newly potted divisions in bright, indirect light, avoiding direct sunlight which can scorch their leaves. Consistent warmth is beneficial, with temperatures ideally maintained between 65°F and 80°F (18°C – 26°C), and sudden drafts should be avoided.
Calatheas thrive in high humidity, so maintaining levels above 50% is recommended for young plants. This can be achieved by using a humidifier, placing the pots on a pebble tray, or grouping them with other plants to create a microclimate. Consistent moisture in the soil is important; water the plants when the top inch of soil feels dry to the touch, but prevent the soil from becoming waterlogged. Using filtered or distilled water is advisable, as Calatheas can be sensitive to chemicals found in tap water.
Troubleshooting Common Issues
Newly divided Calathea Network plants can exhibit signs of stress. Wilting or drooping leaves often indicate insufficient watering or low humidity, both of which can be addressed by increasing moisture in the soil or air. Conversely, yellowing leaves can signal overwatering or poor drainage; allow the soil to dry more between waterings and ensure adequate drainage.
Browning leaf tips or edges are a common symptom of low humidity or a reaction to hard water. Increasing the surrounding humidity or switching to filtered water helps alleviate this issue. If roots appear mushy and black, root rot may be present, caused by persistent overwatering, necessitating improved drainage and potentially trimming affected roots. Consistent environmental conditions and close monitoring will help them recover and thrive after the propagation process.