The notion that cultivated blueberries do not have as good flavor.
May 01, Mulch should be 4 inches to 6 inches deep and cover a 4-foot band of soil centered on a blueberry plant row. It is important to replenish mulch as it deteriorates. Deteriorating mulch adds organic matter to the soil and creates a favorable environment for root growth. Sawdust, woodchips, ground bark or peat moss are excellent materials for mulching blueberries. A layer 3 to 4 inches thick is desirable and should be replenished every few years to replace that which is lost through decomposition.
Can you use cedar mulch for blueberries? Blueberries have dense, shallow roots and do best with inches of mulch over the roots to conserve moisture, prevent weeds and build organic matter. Do not use bark, sawdust or bagged mulch from cedar or redwood trees which has tannins which may harm the young plants.
Mulch first-year blueberry bushes with a sawdust that has had time to decay and rot. Suggested woods for sawdust include hemlock, pine and fir. Place a 3-inch depth of mulch around the base of the blueberry bushes and extend the mulch out approximately 2 feet from the center of the blueberry bushes.