How do I start a no dig garden?
Even if you have a concrete backyard in the city it is still possible to grow your own food. A no dig garden can be constructed virtually anywhere and can be of any size. The first step is to construct a border about 50cm in height out of timber, stone or bricks. If you are starting on a soil surface the first layer should be newspaper, 5-10 sheets thick laid in an overlapping pattern to suppress weeds. Next add a 15cm thick layer of lucerne straw followed by a 5 cm layer of well rotted manure of any sort. Then repeat the process again and finally cap it off with a 10cm layer of potting mix or compost into which you can plant your vegetable seeds or seedlings.
The layers will act like a big ‘compost cake’, and as it decomposes there will be lots of plant food released by the bacterial action, which will turbo charge your vegetables. As the layers rot down, they will encourage lots of worms to work too, further enriching the garden. As it rots, the depth will sink, so top up with more compost and hay as required.