Very nice!
What a great experiment, I look forward to seeing your long term results. I am not trying to be a back seat gardener, but it would be interesting to do one bed, 2 or 3 times deeper with that many times more
wood in them. To see what difference in
water consumption might happen with a range of wood mass.
We are going to be building a bunch of hugleculture beds this summer. We have planned to go heavy on the wood, but now you have me thinking we
should try a few spots with annuals with a small amount of wood and monitor the difference in water requirements.