Be careful to wipe the glyphosate only on the weeds within the area to be plnated. Glyphosate will also kill blueberries. No product endorsement is implied, nor is discrimination intended against similar materials. Research at the University of Maine has shown that fertilizer speeds the establishment of young blueberry plants. Fertilizer applications increase vegetative growth, rhizome production and ground cover.
Response seems greatest the first two or three years after planting.
Experiments at Blueberry Hill Farm on a plowed soil without an organic pad showed a dramatic response to frequent, multiple applications of liquid fertilizer. Fertilizer should be applied to the soil surface before mulching and planting and to the mulched surface in the spring of the second and third year. Determine fertilizer requirements after the third year by leaf analysis. Otherwise, mulch may be applied after planting. Apply mulch two to four inches deep.