J. Linderski has argued that Pliny described flower boxes in his Naturalis Historia, at 19.59. However, Linderski could only find one other allusion to this practice in Martial 11.18.J. Linderski, "Imago Hortorum": Pliny the Elder and the Gardens of the Urban Poor", Classical Philology, 96 (2001), pp. 305-308
