it will break down in a few seasons.

Bark scraps tend to raise the acidity and improve the health of the soil as it breaks down, both of which are good for trees.

in composting — but I chip my own mulch mostly from hedge and tree branch pruning/thinning — not just bark, though I have chipped up bark that fell off firewood as well and included it in compost. And my compost has always been really good nutrient and grow-wise.

I do know that most mulch is acidic pH wise. So keep keep that in mind. I’d say try it and see? You can alway add lime if soul pH gets too acidic.

Look it up. Basically you just build a sort of mound with big stuff like branches and bark at the bottom, then smaller organic stuff, then soil. Then you plant on it for years as it slowly breaks down.