The weeds occurring in lowbush blueberries, like the crop itself, are species of the native flora that survive and are promoted by the 2-year crop cycle.
Weeds constitute one of the major production problems in lowbush blueberry culture.
Good weed control is necessary to maximize crop yield. It also allows the use of fertilizer and facilitates harvesting, especially with the newly developed mechanical harvesters. Until recently, weed control was restricted mainly to cutting and mowing and to wiping or spot treatments of phenoxy-type herbicides. These labor-intensive treatments often resulted in crop injury and, in many cases, failed to give satisfactory control of many weed species. Recent increases in lowbush blueberry production have resulted, in part, from the industry adapting widely the use of certain selective soil-applied herbicides, particularly hexazinone.