We want to indicate with this term those gardens raised from the ground in any way. The first of which we have news we find them in Nineveh and Babylon, suspended on large terraces and supported by arches, pillars and vaults. They were considered in antiquity one of the seven Hipproses of the world, together with the pyramids of Egypt, the statue of Jupiter performed by Phidias, the colossus of Rhodes, the temple of Artemis at Ephesus, the mausoleum of Alicarnassus and the lighthouse of Alexandria.
“Le ciel est, par-dessus le tait si bleu, si calme!
Un arbre, par-dessus le mit berce sa palme.”
They stretched along the banks of the Euphrates and seem to date back to the time of Semiramis (about 800 B.C.), then restored by Nebuchadnezzar; according to the geographer Strabo they consisted of overlapping terraces, with trees and avenues at the pillars that supported them; but it is more probable that it was degrading terraces and this undoubtedly made plant life possible on each of them; the upper one often took on the appearance of a large, large garden, as it also used the foliage of the trees that grew in the supporting pillars of the lower ones. On the other hand, many Assyrian bas-reliefs show houses with a double terrace, in which the upper one served as a shelter from too high a temperature, and the lower one was decorated with plant elements; in a regularly according to the effect to be obtained, so that the whole looks just like a wagon; in this way, however, it will be easier to measure the inputs according to the species which will preferably be all perennial. The heavier vessels will remain in correspondence with the more solid perimeter walls and the taller plants will also serve as windbreaks, or they will be extended on supports to the inside, if climbers, to form arbors or shaded areas in summer. We must not forget that in most of our climates, if the wind and the cold are the enemies of the gardens on the roofs, the summer sun is the same and therefore the presence of climbers that shade the most exposed areas and almost a necessity.
in the sun Agapanthus, Hibiscus rasa-sinemsis (provided the sun is not really excessive), Nerium oleander, Punica granatum, Pelargonium of all kinds (because the zonals will hide the tall pots and the Peltatum will fall back hiding the edges of false flowerbeds), Bougainvillea . In the shade will prosper Fntsia, Laurus nobílís, excellent as windbreak, Nandína domestica, Plumbago capensis, and many others. Do not forget, where sun and exposure allow it, the climbing roses that will be the real completion of our hanging garden.