I built some 4ft x 8ft beds out of landscape timbers as a trial. I put down cardboard, then 1" of coarse sand, then filled it in with 1/3 leaf compost, 1/3 peat moss and 1/3 top soil. No weeds for the first year and very minimal for the second year. Seems the few weeds I did get were distributed by wind. I am sure that the earthworms took care of the cardboard by now.
Probably won't do too much of a garden this year. A couple big trees need to come out first. Then I'll do a total rebuild with larger raised beds.
