Ask Extension is a way for you to get answers from the Oregon State University Extension Service. We have experts in family and health, community development, food and agriculture, coastal issues, forestry, programs for young people, and gardening.
Q: We have a large walnut tree and would like to compost the leaves for our vegetable garden. I have read conflicting reports about the ability of composting to break down the toxin juglone. Is it safe to compost these leaves?