256 TREES AND SHRUBS 



small Hazel bush, and in early spring before the 

 leaves appear, the drooping clusters of fragrant yellow 

 flowers appear in profusion, simple protection is all 

 that is needed to get flowers quite early in the year, 

 when it is very pretty in the greenhouse. It thrives 

 well kept permanently in pots, or it may be lifted 

 and potted in the autumn. No pruning is neces- 

 sary. 



Cytisus (Broom). — The various Brooms are much 

 admired, whether in the open ground or under glass, 

 and for the latter purpose they must be established 

 in pots, for their roots are few, descend deeply, and 

 therefore transplanting is difficult. They will not 

 bear hard forcing, but in a greenhouse may be had 

 in flower by the end of March, or soon after. If 

 kept altogether in pots, cut them hard back after 

 flowering to encourage vigorous shoots for another 

 year. Numerous sorts may be grown in pots, par- 

 ticularly the Spanish Broom (C. albus), the common 

 Broom (C. scoparius), with the hybrid Andreanus and 

 the sulphur -coloured C. prcecox. 



Deutzia. — The pretty D. gracilis is well known as 

 one of the best of all shrubs for early forcing. The 

 Dutch cultivators grow it in pots and plunge it in 

 the open ground. Of these smaller Deutzias some 

 beautiful hybrids have been raised, particularly D, 

 Lemoinei, D. hybrida venusta, and D. kalmceflora, all of 

 which may be forced almost, if not quite, as readily 

 as D. gracilis. The old and exhausted shoots of 

 these Deutzias should, if the shrubs are kept in pots, 

 be cut away to allow young and vigorous ones to 



