I have had good luck in the past burying logs to create a Hügelkultur for my garden. This year I decided to build some raised beds and lined the bottom of the beds with logs to get the advantages of Hügelkultur and also to reduce the amount of top soil I had to haul to my back yard.

Unfortunately, I wasn't thinking and accidentally put in some black walnut logs. Now I'm worried I won't be able to grow anything because of the juglone chemical in black walnuts.

The logs were very broken down and nearly falling apart. They had been laying on the ground for what appears to be 5-10 years. I know the juglone probably won't be completely gone, but will it have broken down enough to not kill my veggies? Or should I spend 6 hours, dig it all back up, and get rid of the logs now?

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    I would suspect there is little poison left in the wood after weathering. When I had a black walnut tree ,the fallen leaves did not seem to make a big difference to weeds. – blacksmith37 Apr 20 '20 at 19:30
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    Leave the logs where they are. Any Juglone in the logs should have leached out long ago. – Jurp Apr 20 '20 at 21:46
  • Thanks for the replies. Think I'm going to try it this year and see how it goes. I can always dig it up in the fall if I have to. – codeConcussion Apr 21 '20 at 3:33

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