272 THE NURSERY-MANUAL 



Ceanothus. Rhamnacece. 



Increased by layers and by cuttings of mature wood in autumn 

 hi a coldframe. Softwood cuttings grow readily if taken in early 

 spring from forced plants. Also propagated by seeds sown in 

 spring. Varieties and hybrids may be grafted on roots of C. 

 americanus under glass in early spring. Seeds may be sown in 

 spring. 



Cedar: Cedrus, Chamoecyparis, Juniperus, Thuja; also Cedrela. 



Cedrela (Bastard Cedar). Meliaceoe. 



Propagated by seeds and mature-wood cuttings in sand, under 

 glass ; also by root-cuttings. 



Cedronella. Labiates. 



The herbaceous species are propagated by division of the roots 

 and by cuttings of young wood; C. triphylla by cuttings or by 

 seeds. 



Cedrus (Cedar). Pinacew. 



Propagated in spring by seeds. Varieties are propagated by 

 veneer-grafts in late summer or fall ; may also be grown from 

 cuttings, if the small shoots which spring from the old wood are 

 taken. In the North, C. atlantica may be used as stock on which 

 to graft varieties and rare kinds, and in the South C. Deodara. 



Celastrus (Staff-tree. Bitter-sweet). Celastmcece. 



Grown from seeds sown in fall or stratified, and freely by suckers ; 

 also by layering in autumn ; also by root-cuttings. 



Celery (Apium graveolens). Umbelliferce. 



Grown from seeds ; for the early crop, sow under glass, as in a 

 hotbed, early in March. Seed for late crops may be sown out- 

 doors as early in spring as the ground can be worked, in well-pro- 

 tected and carefully prepared seed-beds ; keep the soil uniformly 

 moist. 



Celosia (Cockscomb). Amaraniacea. 



Grown from seed sown in spring indoors or directly in the open. 

 Seeds germinate readily. 



Celsia. Scrophulariaceas. 



Seeds in pots in the greenhouse, the plants being later trans- 

 ferred to the open ; C. Arcturus also by cuttings. 



