How thick a layer of mulch is good to use on food gardens to hold moisture in the soil?
Mulch is a way of improving soil. Mulch used on food gardens should not be acidic so do not use mulch made from chipped christmas trees as it is very acidic. If there is mulch on the garden from last season clear it off in the spring so that the soil can warm up. If the mulch is left on during the spring it will prevent the soil from warming up. Then in July, place the mulch around plants without having the mulch touch the plants. This layer of 7-10 cm of mulch will hold moisture in the soil and will gradually break down and become part of the soil.
