· similarly to weeds, diseased plants should never be added to a home compost bin, as doing so can encourage the spread of infections to other plants. · no , you should not compost diseased plants in a compost tumbler. · if a disease infects your crop, to be on the safe side, you should avoid composting it , but you can also test whether the disease will spread after decomposition. Discover best practices and safety precautions for a thriving garden. · learn how to compost diseased leaves, reduce waste, promote microbial growth, and create nutrient-rich soil. Some experts will say throw everything in your compost bin, but then contradict themselves with “except. ” and list off all the things you shouldnt compost , like foliage with pests and disease. Fungal spores, bacterial pathogens, and viral infections can survive in compost that doesn’t reach sufficiently high temperatures, meaning your careful garden work could be undone. · composting diseased leaves is a controversial subject. · so, can you compost diseased plants? · avoid composting mistakes that can harm your garden. Learn why diseased plants, weeds, and certain scraps should never go in your compost —and what to do instead. Yes , you can compost diseased plants as it’s biodegradable and can be a rich component of your compost pile, contributing to rich, nutrient-dense soil. Compost tumblers are designed to break down organic matter quickly and efficiently, but they may not be able to eliminate all diseases.