Mostly by seeds and divisions. For the conservatory plants known as geraniums, see Pelargonium.
Gerardia. Scrophularineæ.
Propagated, but often with difficulty, by seeds, sown in the open air or in a frame or cool house.
Seeds, and cuttings of the shoots and leaves. Handled in essentially the same manner as Gloxinia, which see.
Gethyllis. Amaryllideæ.
They may be increased by bulbels or seeds.