Hello everyone! This year I'm preparing a Mandala garden in my backyard. I'm only growing potatoes there this year, since it takes all of this summer for me to prepare the mandala circle. But I wan't some help from you people here. I live in a cold temperate climate, in the middle of Sweden, where we usually use raised beds. Should I make the garden beds raised in the mandala too? Or should I raise all of the mandala, including the space for fruit trees, chicken fodder and the like? That takes a lot of organic matter, but I think I can get it. If I should raise all of it, do I need some sort of wall around it all? Or should I plant something special on the edges to prevent the raised part to spread down, if you know what I mean?