Leather dust is a finely ground powder made from waste leather materials, typically generated during the processing and cutting of leather in tanneries. In agriculture and gardening, leather dust is valued as a rich organic source of nitrogen, which is essential for promoting leafy growth and overall plant vigor. When decomposed in the soil, it gradually releases nutrients, making it an effective slow-release fertilizer for crops, vegetables, and ornamental plants.

Due to its high protein content, leather dust supports microbial activity in the soil, which in turn helps in breaking down organic matter and enhancing soil fertility. It is often used as a soil amendment to improve structure and nutrient availability over time. In addition to its fertilizing benefits, leather dust also contributes to the sustainable management of industrial waste by converting otherwise discarded material into a useful agricultural input.

However, proper treatment and processing are crucial before using leather dust in farming, especially to ensure it is free from harmful chemicals like chromium, which may be present in certain types of treated leather. When sourced and processed responsibly, leather dust serves as an eco-friendly and cost-effective alternative to synthetic nitrogen fertilizers, supporting sustainable and regenerative farming practices.