So I collected a bunch of tree rounds after a big windstorm last year. Today I started digging the trench to bury them in. But my friend warned me that poplar can sprout! The wood sat outside in the snow all winter, I don't think its dry yet though.
Am I going to regret burying this stuff under soil? I think it's aspen. I hear it's hard to get rid of.
Many types of trees in that family can sprout and root under similar conditions. Just to be safe, I would season the wood enough that it dies on a cellular level before burying it, if invasive sprouting is a possibility. Maybe before you bury it, make some mushroom totems with the rounds, and let them go for a year before you bury them. Then you can get a mushroom harvest before they become part of your hugel project.
Hope that helps!
Location: Rocky Mountains, British Columbia zone 4b?