Had quite a bit of decayed wood from cutting dead trees for winter heat. The decayed outer bark and wood were split off the dead heart wood. Ended up with about a 1/3 cord stack of decayed wood from the winter heating season.
What to do with it?
There was a fair amount of dead pole timber lying on the ground where the dead trees were harvested for firewood. All came from a mostly oak forest turning toward old growth.
The idea was to use the pole timber in fort style for support, and the decayed wood inside "the fort" to prevent the bed from quickly "slumping" downhill.
About eighty gallons of river pea gravel, an accumulating "waste product" from a local rock and gravel operation, was used to fill the voids and hold the decayed wood in place. Pea gravel is at least as good as decayed wood for holding moisture.
The sandy soil from digging the trench for the fort poles is the first ground contact layer. From there, in order of ingredient volume, it is decayed wood, pea gravel, biochar (another excellent moisture grabber that retains bulk), Global Harvest soil rejuvenator, cal-phos and Sea-90. Then on top a sprinkling of bark from the log splitting, newly emerged grass, and composted horse manure.
Herbs were then seeded, with a few native herbs transplanted from their native habitat on top.
How will it work? Will it slump? Will it grow stuff with little watering? We shall see.