The treatment of young orchids should be founded on what suits the parents. As a rule, however, they require more careful nursing, and some of the conditions must be modified. Drought, intense light and cold draughts must be avoided. For many orchids, especially those from equatorial regions, where the atmospheric conditions alternate between saturation and intense heat and dryness, it is necessary, in order to induce flowering, that nature, to some extent at least, should be imitated. With young plants, by whatever method they may be obtained, the supply of water must only be reduced in accordance with the weather and season, and beyond that, no attempt at resting made. In cases, however, where plants have been divided or made into cuttings, a very limited supply of water is needed at first; but to prevent exhaustion, the atmosphere should always be kept laden with moisture.
Oreopanax. Araliaceæ.
Seeds, and cuttings of the young shoots, or division of well established plants.
Ornithogalum (Star of Bethlehem). Liliaceæ.
Seeds. Commonly by bulbels, and by division of the clumps.
Ornus. See [Fraxinus].
Orobus (Bitter Vetch). Leguminosæ.
Readily propagated by seeds, or by dividing the tufts.
Orontium. Aroideæ.
Commonly increased by division, but seeds may be used.