Prickly Pear. See [Opuntia].
Pride of India. See [Melia].
Priestleya, including Achyronia. Leguminosæ.
Seeds. Cuttings of very young wood, under cover.
Prim. See [Ligustrum].
Primula, Polyanthus (Primrose, Cowslip). Primulaceæ.
Seeds, sown carefully in very fine soil, under glass. Some rare sorts are increased by division.
Prinos. See [Ilex].
Pritchardia. Palmæ.
Increased by seeds.