Here are some notes from this book and also his book, “Square Foot Gardening – Answer Book.”
- He plants on top on the dirt and grass. No tilling and no improving the soil.
- His soil mix is 1/3 peat moss, 1/3 coarse vermiculite and 1/3 compost (from different sources)
- As part of the compost mix, he encourages using worm castings, composted manure, etc. – this is probably where he gets his Nitrogen source.
- No added fertilizer.
- He does add extra compost every year.
- He suggests using 1 x 6 or 2 x 6 lumber.
- He says to use landscape fabric underneath the box.He used to recommend putting down newspaper or cardboard. He’s worried about old weeds seeds sprouting from the soil.
- After you harvest a crop you add a handful of compost to that particular square.
- Crop Rotation – after you harvest a crop you put in a different type of vegetable. You move from root, to fruit to leaf crops.
I’m going to test this system out this year and see what results I get. I do a version of this as my “Easy” butterfly garden. I use a mix from St.Louis Composting which does contain soil and compost.
Here’s a good video of the process although it’s a bit old.