Gilliflower. See [Matthiola].
Ginkgo, Salisburia (Maidenhair-tree). Coniferæ.
Seeds, which are mostly imported, and which should be stratified. Also by layers, and by cuttings of either green or ripe wood. The cuttings are handled under glass. Named varieties are grafted upon common stocks.
Ginseng. See [Aralia].
Gladiolus. Irideæ.
Seeds, which are commonly sown in pans in spring, in the house; or they may be sown in the border. Seedlings flower in two or three years. The common method of propagation is by means of cormels (see [page 29], and [Fig. 16]). These are removed from the parent corm and planted in the open, where some of them will flower the same season, although most of them will require a season’s independent growth before they flower. If cormels are desired in abundance, the large corms should not be allowed to flower. Some varieties do not produce cormels readily, and these may be made to bear them by cutting or ringing ([page 30]). A new corm is formed above the old one each year ([Fig. 16]).
Glastonbury-thorn. See [Cratægus].
Seeds should be sown in spring about one inch deep. They should be soaked in hot water before being sown. Varieties propagated by grafts upon seedling stock.
Gleichenia. See [Ferns].