Update, Elderberry kept back in jar of water showing most growth, since, repotted before roots got to long. Surprisingly, the potted (kept wet and on north side of house) dogwood showing most growth, then elderberry, some arrowwood, nothing yet from the buttonbrush. None of the direct outdoor planted varieties have shown anygrowth. All of the transplanted elderberry are green and doing well. (Side note in addition to adding screening to the property, the elderberry are going to be flowering in june which helps bees fill in gap for pollin during summer derth).