ON GREENHOUSE PLANTS. 



713 



some roots attached, and potted in 3m. pots. Flower in 8in. 

 pots. Green-fly is very troublesome, but can be kept under by 

 frequent slight fumigations. The plants are also subject to the 

 attacks of Red-spider, but only when sufficient moisture has not 

 been kept about in hot, dry weather. C. cruenta (Fig. 461) is 

 one of the original parents. It is much more robust than the 

 garden hybrids, having tall, loose, and graceful panicles of flowers. 

 A new race has recently been evolved by crossing this with the 

 old hybrids. These are known as C. kewensis ; they have much 



the same habit as 

 cruenta, but larger 

 flowers, are very 

 effective, and have 

 a strong constitu- 

 tion. The colours 

 of all the above are 

 very varied and 

 brilliant. 



Cosmos bipin- 

 natus is an annual 

 which although 

 often grown out of 

 doors is worthy of 

 a place in the 

 greenhouse. Sow 

 seed in March and 

 grow on, flowering 

 in 8in. pots in July 

 and August. For 

 soil use loam, leaf- 

 soil, and sand. The flowers 

 somewhat resemble a single 

 Dahlia, and are of various 

 colours. Height 3ft. 



Cuphea ignea is a pretty, 

 compact little plant, with 

 scarlet and black tubular 

 flowers. Propagate by 

 cuttings struck in warmth 

 a cool pit to flower in 



Fig. 461.— Cineraria cruenta. 



in February or March, and grow 

 summer. Height ift. 



Daturas.' — The perennial species of these make handsome 

 specimen plants for the centre bed, forming large bushes with 

 tubular hanging flowers. They are very easily rooted- from 

 cuttings placed in a little bottom-heat, afterwards being grown on 

 for a time in the warm pit to make large plants. When these 

 have been formed, the young shoots should be cut back every 

 autumn to within three or four eyes ; they will break readily in 



