Ever heard of hugelkultur? Neither had I until we accidentally included it while filling our rather large planter on our new patio last year. We designed our patio to include a large built-in planter, as I'd been dreaming about one for forever.
However, when it was built, it ended up sitting at the same height as the steps down to the garden... which meant it was incredibly deep. Some might argue it was a slight patio idea flaw, but I'll say no more about it. At first, I didn't think much of it, but then I started calculating how much soil and compost I'd need to fill it. Turns out, I needed a lot and came to a hefty total.
