ni GLENNYS HANDBOOK 



rapid-growing climbers, covering a large space during the 

 summer season with their herbaceous stems, which, in a 

 greenhouse or conservatory, retain their foliage, and continue 

 to blossom through the winter. They are very useful as well 

 as ornamental out of doors during the summer season, but in 

 such situations are killed by frosts. When grown in a green- 

 house they generally ripen plenty of seeds, by which they 

 are best propagated, though they may be increased by 

 cuttings. They require a rich loamy soil. C. scandena is 

 chiefly grown. 



COBURGHIA. [Amaryllidaceae.] Fine greenhouse bulbs, 

 agreeing in treatment with Phycella and the allied genera ; 

 that is, they require a rich loamy soil, and a warm sunny 

 situation during summer, and to be kept dry and from frost 

 in winter. Increased by division. 



COCKSCOMB. See Celosia. 



CQilLESTlNA. [Compositae.] C. ageratoides, formerly 

 known as Af/eralum aelestimim, is a half-hardy sub-shrubby 

 plant, useful fur the decoration of the flower garden in sum- 

 mer. The plant should be raised from cuttings in July or 

 August, potted into single pots, and kept through the winter 

 in a dryish greenhouse, where abundance of air is admitted 

 in all mild weather, and frost is by any means excluded : 

 they may be kept in small pots, on shelves near the glass. 

 In February they should be shifted into pots a size larger, 

 and may be removed to shallow frames as soon as these are 

 a safe protection against frost. In such frames the}' get more 

 perfectly exposed to light and air, and are thus the better 

 prepared for planting out. In May the plants must be 

 thoroughly hardened to bear the open air without protection, 

 and towards the end of that month they may be planted out. 



COLCHICUM. Meadow Saffeon. [Melanthaceae. : 

 Hardy bulbs, pushing up their Crocus-like flowers just above 

 ground in autumn, whence they are sometimes called autumn 

 Crocuses : the leaves are not produced with the flowers, but 

 appear in spring. They are pretty either for patches in the 

 mixed flower-border, or as an edging. They increase by 

 offsets or by seeds, the latter sown as soon as ripe, and 

 allowed two seasons' growth in the seed-bed, and then the 

 strongest planted out for blooming. Offsets should be pjlanted' 



