100 PLANT PROPAGATION 
CENTAUREA.—This genus includes the popular Corn- 
flower, Sweet Sultan, several hardy perennials, and the 
extensively-grown, silvery-leaved C. Cineraria. The 
perennials can be raised from seed, or the roots may be 
divided; the annuals from seed sown in April. For 
bedding purposes C. Cineraria is much more satisfac- 
tory, and is-considerably less trouble when raised from 
seed sown in slight heat in August, than when propa- 
gated from cuttings, as was formerly practised, pro- 
vided they are potted singly in small pots and kept in a 
cool house from which frost is excluded during winter. 
CEeRASTIUM.—The silvery-foliaged kinds, so useful in 
the rockery and for edgings, are easily increased by 
division in April or by cuttings planted in a shady 
border after flowering in July. 
Cestrum (Habrothamnus).—Cuttings of young side- 
shoots with a heel strike root freely in a close heat of 
65 to 70 degrees in summer. 
CHAMPEUCE.—Much used in sub-tropical gardening 
and carpet-bedding, these composites are raised from 
seed sown in gentle heat in February and again in 
September. In the latter case the seedlings are pro- 
tected indoors during winter to provide strong plants 
for planting out of doors at the end of May. 
CHERRIES.—These useful fruit-trees are mostly 
budded in July on stocks of the Wild Gean raised from 
seed and the Mahaleb stock for Morello Cherries and 
dwarf trees. Should any of the buds fail to take, graft- 
ing may be done in March. Prospects of success are 
greatly enhanced by cutting off the shoots intended for 
scions early in the year, laying them in the ground in 
a cool place to keep them dormant until wanted. A 
wood bud is necessary on each scion, and it sometimes 
