Polygala (Milkwort). Polygaleæ.
Seeds; sometimes by division, and by cuttings of young shoots under cover, particularly for tropical species.
Polygonatum (Solomon’s Seal). Liliaceæ.
Propagated by seed and by divisions.
Polygonum (Knot-Grass or Weed). Polygonaceæ.
Seeds. The perennials are also increased by divisions of the root-stocks, and by cuttings.
Polypodium (Polypody). Filices.
Divisions usually. See [Ferns].
Pomegranate (Punica granatum). Lythrœrieæ.
Largely by seeds, and all varieties are increased by cuttings, suckers, layers, and scarce sorts by grafting on a common sort.