Err, I'm going to have to do some more checking. I don't remember anything about packing it with wood.
I did see where they would slope it from very high in the middle (water reservoir in the center) to much lower around the outside - but still raised. I wasn't considering it for the water conservation properties but more for the more ease of hand working it. I read where they are supposed to be easier to work because you're not trying to keep long rows clear of weeds and you can group things denser.
Right now I've got a 10' circle with the grass dug up and turned over. I'm going to add some old hay and some chicken poo/horse poo this weekend and then cover it with a tarp. I'll also have lots of oak leaves to add later, more hay, more poo - lol. Hoping to end up with a slightly raised bed of richer soil by spring.
I did see where they would slope it from very high in the middle (water reservoir in the center) to much lower around the outside - but still raised. I wasn't considering it for the water conservation properties but more for the more ease of hand working it. I read where they are supposed to be easier to work because you're not trying to keep long rows clear of weeds and you can group things denser.
Right now I've got a 10' circle with the grass dug up and turned over. I'm going to add some old hay and some chicken poo/horse poo this weekend and then cover it with a tarp. I'll also have lots of oak leaves to add later, more hay, more poo - lol. Hoping to end up with a slightly raised bed of richer soil by spring.