=Phacelia=, Eutoca, Whitlavia. _Hydrophyllaceæ._ The annuals are increased by seeds, and the perennials by seeds and divisions. =Phædranassa=, including Leperiza (Queen Lily). _Amaryllideæ._ Propagated by seeds and bulbels. =Phaius.= _Orchideæ._ Division of the bulbs. (See also under Orchids.) =Phalænopsis.= _Orchideæ._ These are very slow and difficult to propagate. In the majority of the species it can only be done where a lateral off-shoot is made from the main stem. Some species, such as _P. Luddemanniana_, and more rarely _P. amabilis_, _P. Stuartiana_ and _P. Schilleriana_, develop plantlets on the old flower scapes. By pegging these down on a basket of moss they may be established and afterwards separated. _P. Stuartiana_ and _P. deliciosa_ have been known to produce plants on the roots. Other instances of root-proliferation are recorded in _Saccolabium micranthum_ and a species of cyrtopodium. (See under Orchids.) =Phalaris.= _Gramineæ._ Propagated by seeds, but the sports by divisions. =Phaleria=, Drimyspermum. _Thymelæaceæ._ Increased by seeds sown in heat in spring; or by cuttings of the young shoots, which should be inserted in bottom heat. =Pharbitis.= See Ipomœa. =Phaseolus= (Bean, Kidney, Pole, String; French Bean, etc.). _Leguminosæ._ The ornamental greenhouse kinds are grown from seeds planted in light soil in a warm propagating house. See Bean. =Phebalium.= _Rutaceæ._ May be increased by cuttings of the young wood, under a glass. =Phellodendron= (Cork Tree). _Rutaceæ._ Increased by seeds, layers and by root-cuttings. =Philadelphus= (Mock Orange, Syringa). _Saxifrageæ._ Seeds, layers, suckers and cuttings. Layers are most used. Cuttings of mature wood are sometimes employed. Some well-marked varieties, like vars. _nana_ and _aurea_ of _P. coronarius_, are grown from cuttings of soft wood in summer in frames. =Phillyrea= (Jasmine Box, Mock Privet). _Oleaceæ._ Seeds. May be propagated by cuttings, layers, or by grafting on the privet. =Philodendron.= _Aroideæ._ Increased by seeds; and by dividing the stems, allowing two or three joints to each piece, inserting them in pots in a brisk heat. =Phlomis.= _Labiatæ._ All of the species may be increased by seeds; the herbaceous kinds by divisions, and the shrubby sorts also by cuttings. =Phlox.= _Polemoniaceæ._ The annuals are grown from seeds sown in the open. The perennials are grown from seeds, divisions, cuttings of stems and roots. Cuttings made during summer, and handled in a frame, do well. The roots are cut into short pieces, and are then handled in pans or flats under cover. =Phœnix=, Elate (Date Palm). _Palmæ._ Increased by imported seeds, sown in a sandy soil, in a mild hot-bed. Also by suckers. See also Date.