Introduction - Raised Bed Gardening - page 19

Figure 6. Raised Beds Built From Sawmill Slabs.
Slabs are the outside leftover cut from trees as a round tree is turned into lumber. Slabs are
square on the inside and rounded on the bark side. Depending upon the type of wood, the
bark may say on for years or it may fall off. Sometimes these slabs can be picked up at little
or no charge from small scale saw mills.