THE NURSERY-LIST 441 



Zingiber (Ginger). Zingiberaceoe. 



Propagated by division of rhizomes in spring. 



Zinnia. Composites. 



Annuals, grown from seeds, sown either indoors or out when the 

 weather is settled. 



Zizania (Wild or Indian Rice). Graminem. 



Propagated by seeds, sown in water with a soft mud bottom. 

 It is well to place seed in coarse cotton bags and sink them in water 

 for twenty-four hours before planting. 



Zizyphus (Jujube). Rhamnacece. 



Propagated by seeds, greenwood cuttings under glass, root- 

 cuttings and offsets (suckers) . 



Zygadenus. Liliacece. 



Handled by division of rhizomes, and also by seeds. 



Zygocactus (Epiphyllum of horticulturists). Cactacece. 



The crab cactus or Christmas cactus (Z. truncatus but mostly 

 known as Epiphyllum truncatum) is readily grown from cuttings. 

 Pieces of the branches 4 to 6 inches long are placed in sandy soil 

 in gentle heat and kept moderately dry. Zygocactuses are 

 often grafted on strong stocks of pereskia (Pereskia aculeata is 

 commonly used, but P. grandifolia is equally as good), for the 

 purpose of getting high or rafter plants. A young shoot is cleft- or 

 side-grafted into any part of the pereskia which has become hard, 

 and the cion is held in place by a cactus spine passed through it. 

 Several cions may be inserted along the sides of the stock. See 

 Cacti, page 261. 



Zygopetalum. Orchidaceoe. 



Propagated by cutting through rhizomes between old pseudo- 

 bulbs at a good eye. See Orchids, page 372. 



