To care for Philodendron, provide bright, indirect light, avoiding harsh midday sun that can scorch its leaves, although a little direct sunlight in the morning or evening is fine.
Use a well-draining soil mix of potting soil, perlite, and orchid bark or vermiculite to prevent waterlogging while retaining some moisture. Allow the top 2-5 (1-2in) cm of soil to dry out before watering, ensuring excess water drains fully, and adjust the frequency seasonally—more in spring and summer, less in autumn and winter.
Keep between 18°C and 27°C (65°F to 80°F), away from cold draughts, and maintain high humidity levels of 60-80% by considering using a humidifier, watered pebble tray, or terrarium.
Feed monthly during the growing season with a diluted balanced fertiliser, stopping in the cooler months to avoid overfeeding which can lead to leaf damage. Wipe the leaves regularly to remove dust, and provide a moss pole or trellis for support, encouraging its natural climbing habit.