Hugelkultur wood question.

I have recently come into tons of wood from a 75' sycamore tree that was killed about a year ago when my dad accidentally over flowed his pasture spray tank filled with 2-4D near the base of the tree. I assume that there is some residual chemical in the wood, but is this wood safe to use in hugelkultur beds? I've never built any but I hate to see such a good resource piled up and burned, which is the alternative.

I'm curious what other people will say about this. Obviously, the best thing is to not have the chemical exposure in the first place, but in life, that isn't always possible. Would fungal treatment be possible for a year or two before using it in a hugel bed? I don't know any specifics on what fungi can deal with sycamore and 2-4D, but fungi seem really good at remediating nasty stuff.

I'm hopeful that it is still usable, as there is already fungal growth happening on parts of it.

I would burn it, either in a wood stove or outdoor fire. Don't cook with it.

The soil around the spill is likely much more contaminated than the dead tree is. Presumably, the tree died before it could take up all of the poison. Fungal remediation could help clean up the site.

Ask your dad to consider stopping the poison regimen in favor of producing food in a manner that doesn't poison his farm and his customers.