240 THE NURSERY LIST. 



Gillenia. Rosacea:. 



Increased readily by dividing the routs in spring ; also 



by Seeds. 



Gilliflower. See Matthiola. 



Ginger. See Zingiber. 



Ginkgo, Salisburia (Maidenhair-tree). Conifera:. 



Seeds, which are mostly imported, and which should 

 be stratified. Seeds are now produced in some quantity 

 in this country. 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 (^-//-a/Ziz, ox Panax). Araliacecc. 



Cuttings of stems and roots. Stems of old plants may 

 be cut into pieces an inch or two long and inserted in 

 sand in heat. Or young ]ilants can be obtained by cut- 

 ting down the tops of strong plants and then separating 

 the suckers which arise. 



Gladiolus. lyidacecc. 



Seeds, which are commonly sown in pans in spring, in 

 the house ; or they may be sown in the border. Seed- 

 lings flower in two or three years. They give new 

 varieties. The common method of propagation is by 

 means of cormels (see page 31, and Fig. 25). These are 

 removed from the parent corm and planted in the open, 

 where some of them will flower the same season, al- 

 though 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 l.)y cutting or ring- 

 ing (page 31 I (3ne or more new corms are formed 

 above the old one each year ( Fig. 25). 



Gleditschia (Honey Locust). LcgiiininoscT. 



Seeds should be sown in spring about one inch deep. 

 They should be soaked in hot water before being sown. 

 X'arieties propagated by grafts upon seedling stock. 



Gleichenia. See Ferns. 

 Globe Flower. See TroUius. 

 Gloriosa. Liliacecf. 



Seeds should be inserted singly in small pots, in a 



