What soil mix works in Kolkata's humid climate?

Kolkata's high humidity demands well-draining potting mix: 40% cocopeat, 30% compost, 20% perlite, 10% neem cake. This ratio prevents waterlogging during Kolkata's intense July–September monsoon while retaining nutrients. Add Trichoderma at potting time to prevent fungal root diseases that thrive in humidity.