Injury can occur on a single stem or on the whole plant, depending on what part of the bush was hit with the spray solution. Though not a soil-active herbicide, it is possible (through misuse) to cause symptoms over the entire plant if the concentrated spray solution is allowed to soak into the ground and saturate blueberry roots, so be sure to mix correctly, use sparingly, and only apply to the plants (weeds) you wish to control! Do not spray so heavily that the product soaks into the ground around the blueberry roots. Wetting bare, weed-free soil serves no purpose since glyphosate has no soil activity and will only control the weeds that are contacted by the spray solution. As always, read and follow the product label.
|Glyphosate injury (left) compared to a normal shoot (right)|