I 9 2 THE NURSERY-BOOK. 



Gerardia. Scrophularinece. 



Propagated, but often with difficulty, by seeds, sown in 

 the open air or in a frame or cool house. 



Gesnera. Gesneracece. 



Seeds, and cuttings of the shoots and leaves. Handled in 

 essentially the same manner as Gloxinia, which see. 



Gethyllis. Amaryllidece. 



They may be increased by bulbels or seeds. 

 Geum, including Sieversia (Avens). Kosacece. 

 Gherkin. See Cucumber. 



Propagation is effected by seeds or division. 

 Gilia, including Fenzlia. Polemoniacecc. 



Seeds should be sown in spring in the open ground or 

 frame, in a rather light soil. 



Gilibertia. Araliacece. 



Cuttings, inserted in sand in a gentle heat. 

 Gillenia. Rosacece. 



Increased readily by dividing the roots in spring ; also by 

 seeds. 



Gilliesia. Liliacece. 



Propagated by bulbels. 

 Gilliflower. See Matthiola. 

 Ginkgo, Salisburia (Maidenhair-tree). Coniferce. 



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. Iridece. 



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

 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 be- 

 fore they flower If cormels are desired in abundance, the 

 large corms should not be allowed to flower. Some varieties 



