By Hardgraft
United Kingdom 
I have lots of walnut leaves which I compost down,but I am beginning to wonder if they are toxic to any plants when used as a mulch, or when incorporated as a "feed."
Any ideas, please?
12 Oct, 2011
Answers
Many thanks, as I leave the leaves composting for 12 months I guess there is no problem.
13 Oct, 2011
Many thanks, as I leave the leaves composting for 12 months I guess there is no problem.
13 Oct, 2011
Previous question
Assuming you're composting the walnut leaves properly, mixed with other leaves as well, the toxic contents degrade in air, light and water within 2-4 weeks, so unless you're chopping them up in a shredder and immediately applying them to the base of plants, there shouldn't be a problem.
12 Oct, 2011