peat
Tips for Mulching Fruit Trees
It is possible to mulch all the ground where strawberries are growing with medium grade sedge peat to the depth of at least an inch. This should be applied immediately after planting in August, and if the soil and the weather are dry, it is as well to soak the peat thoroughly first. No cultivations are then done because the peat smothers the annual weeds and prevents them from growing. (No gardener will, of course, plant strawberries on land where there are perennial weeds.) Because the worms will pull some of the sedge peat into the ground, a further application may be necessary the following April or early May, the idea being to keep the level of the peat at about an inch.