Raised beds vs. lasagna gardening?
My mom wants to take back an overgrown area along the back of her property. The grass is field grass and gets 5' tall and then falls over. She'd like to put in raised beds or some other no-dig option, since the sewer line is under this area (and we're not sure how far down it is). She wants to grow squash, melons, pumpkins, maybe some potatoes with hay on top.
Would actual built up raised beds be the best choice or would lasagna gardening be better? Or is there another option? (I would prefer something low-dollar, since she's retired.)