Seeds, sown in early spring in a cool frame. Also by division.
Frangula. See [Rhamnus].
Frankenia, including Beatsonia, Hypericopsis. Frankeniaceæ.
Increased by seeds and divisions.
Fraxinella. See [Dictamnus].
Propagated chiefly by seeds, which should be stratified. The named sorts are budded upon seedling stocks if the sorts are upright growers, or top-grafted if they are weepers. Both the European and American species are used for stocks.
Freesia. Irideæ.
Increased readily by seed, sown as soon as ripe in pots of light, sandy soil, and placed in a sunny position, in a cool frame. By bulbels.
Fremontia. Malvaceæ.