The no dig garden is exactly what it describes...a fertile garden bed with no digging at all. It involves layering clean, organic materials that will literally compost around your plants as they grow.
The No Dig Garden is built on top of ground, so you can build a garden anywhere. This makes it extremely attractive for those sites that have poor soil or are weed infested. It's also a great method of gardening for those who can't (or don't want to) dig a garden patch!
The site you choose for your garden must get at least 5 hours of sunlight a day. Drainage will be good because of materials that will be used in making garden.
If you are planting over lawn or weeds, mow them to ground level. If you are planting on a hard surface, put down some cushioning organic material first (like seaweed or leaves).
To build your no dig garden start with a layer of newspaper (no colour printing), at least 6mm (1/4 inch) thick. Surround garden with some sort of border material. This can be bricks, logs, planks or rocks but should be at least 20-25CM high (8-10 inches) to contain organic material within.
Lay down a layer of lucerne hay leaving no gaps, to a height of 10cm (about 4 inches). Layer some good organic fertilizer on top to a height of 20mm (1 inch). This can be just about any sort of good quality material like chicken, horse, cow or sheep manure.