Double height raised bed
Decide on the size of your raised bed, get scaffold boards, cut four long sides (the same length), cut four short sides (the same length). On a flat surface lay down two long and two short sides, on edge, to form a box and screw together (advisable to use galvanised screws, they last longer) Now do the same again with the remaining sides on top of the first box. Get four foot long lats (bits of a pallet or two by ones) and use them to tie both beds together by screwing them to the inside of the beds The bed will be heavy, so get some help when lifting into place. Make it on a flat surface as close to the required position as possible These beds are really good for acid soil beds (for blueberries etc) and sandy soil beds for carrots, also in the case of carrots the higher the bed the better to stop the carrot fly attacking because the fly can only fly up to 18 inches high (check this detail with Kitty, I think I’m correct). There you have it, a double height raised bed.