How to use neem cake for plants?

Neem cake provides nitrogen, suppresses soil nematodes, and deters fungus gnats — a three-in-one benefit for container gardens. Mix 1 handful per 10 litres of potting mix before sowing. For established plants, top-dress 2 tablespoons per pot monthly and water in well. Available at most Indian agricultural input shops for ₹30–50 per kg.