Phyteuma, Rapunculus (Horned Rampion). Campanulaceæ.
Easily increased by seeds or by divisions, in spring.
Phytolacca (Spoke, Skoke, Poke). Phytolaccaceæ.
May be propagated by means of seeds, or by divisions.
Propagated by seeds, sometimes by layers, or grafts. P. excelsa (Norway spruce) makes a good stock; the veneer graft, under glass, in winter, succeeds better than any method of out-door work practicable in our climate; if the graft is inserted near the base in young plants, it is quite possible to obtain them on their own roots after a few transplantings. Side-shoots can be used as cions, and if started in time will furnish good leaders; sometimes a leader is developed more rapidly by bending the plant over at nearly a right-angle, when a stout bud may start from the stem. See [Abies].
Pickerel Weed. See [Pontederia].
Picotee. See [Dianthus] and [Carnation].
Pilea (Artillery Plant, Stingless Nettle). Urticaceæ.
May be increased by seeds, divisions or cuttings.