The longer permanent grow beds on the outside ‘walls’ are about 10′ x2′ and have 4″ of builders sand in them. Potted plants or seedling flats an be set inside. The grow beds can be covered with half hoops and plastic which bumps me up another zone or two. allows me to grow a few greens all winter. I can also use heating cables in them for root zone heat-providing we don’t lose power (that happens quite often actually). Continue reading →