Abstract: The invention comtemplates the automatic tagging of seedling transplants which have been or are about to be inserted in the prepared soil within individual cells of matrices (e.g. 3.times.4 matrices of cells). The tags are stacked and retained in individual vertically extending magazines which are above and in transversely spaced array, across the path of the row-by-row indexed conveyor advance of each successive matrix. The tags of each stack are retained by lateral side-edge lug formations of each magazine, at the otherwise open bottom end of the magazine. A tag-picker arm carries an elastomeric suction cup which is configurated, in its horizontal pick-off relation with the bottom face of the bottom tag, to engage and arcuately deform the tag, thus removing or decreasing magazine-lug restraint and affording an initial extracting displacement wherein the arched tag can be downwardly displaced, essentially without shear or other interaction with the next-adjacent and other remaining tags in the magazine.