Not necessarily, but if a raised garden bed is built properly, odds are your plants will be healthier.  In-ground gardens certainly grow healthy plants, too. If the soil conditions are right and you take good care of your in-ground garden, you can produce a yield just as healthy as the plants from your raised garden bed.  But if plants don’t grow well in your traditional garden space, it may be due to poor native soil or drainage problems. If that’s the case, a properly built raised garden bed with superior soil and drainage can help you achieve a healthier yield. Alternatively, if you build a raised garden bed improperly or don’t maintain the framed materials, an in-ground garden might produce healthier plants.