|What size should the frames of a raised bed garden be...2x6, 2x8 or 4x8? 4x8 seems to be appropriate to me. Please note that this is for my personal back yard to grow veggies for my family.|
|Do you mean the bed itself, measured in feet? Or do you mean the measurements of the pieces of wood themselves in inches?|
If it's the size of the completed garden, that's a personal preference. Remember that one of the main purposes of raised beds is that you do NOT step into them. Therefore the 4' x8' would seem quite appropriate. A bed two feed wide is quite narrow.
If you are talking about the size of the lumber, my personal experience would lead me toward the 4" x 8" as well. It will give stability to the sides of your raised bed, while at the same time being high enough to actually RAISE the bed. A 2" x 8" would work as well, but you might need to add some supports to keep it from collapsing.
One reminder: I would caution you against using pressure-treated wood to construct raised beds for a food garden. Or at least read up on the various literature citing the hazards, and what you can do to minimize them.