Yes, biodegradable mulch can be used in organic farming. It is an environmentally friendly option that helps to suppress weeds, retain soil moisture, and regulate soil temperature. Biodegradable mulches, such as straw, wood chips, or leaf mold, break down naturally over time, enriching the soil with nutrients and organic matter, which aligns with the principles of organic farming that promote soil health and sustainability. However, it's important to ensure that the mulch materials are sourced from organic or sustainably managed practices to maintain the organic integrity of the farm.