HARDY SHRUBS IN GREENHOUSE 269 



open ; it is then very pretty and much liked. After 

 flowering, the shoots generally die back almost to the 

 ground, but break up with renewed vigour in spring. 



CEANOTHUS. Some of the early-flowering Ceano- 

 thuses are very valuable ; they may be grown in pots, 

 and their flowers are of pleasing blue colouring, 

 which is unusual and therefore welcome. Among 

 the best for this purpose are C. dentatus, C. papillosus, 

 and C. veitchianus. Ceanothuses do not transplant 

 very well, and if intended for flowering in pots 

 should be lifted in the autumn, potted carefully, 

 and wintered in a cool house. They may be kept 

 altogether in pots, giving them much the same 

 attention during summer as Berberis stenophylla. 



CERCIS SILIQUASTRUM. This is the Judas tree, 

 and as many know, while the leaves are still absent 

 the stems bear clusters of rosy-purple flowers. It 

 may be lifted and potted in the autumn or kept 

 altogether in pots, but on no account indulge in hard 

 forcing, as it resents this treatment. Well-grown 

 specimens are very pretty when in flower in late 

 March. 



CHIONANTHUS. There are two species of Chio- 

 nanthus, viz. the North American Fringe tree (C. 

 virginica) and its Japanese representative C. retusus. 

 They resemble each other very much, but the 

 American form is the better of the two. The Fringe 

 trees are very charming when in pots. Prune back 

 hard after flowering and fully expose to the sun to 

 ensure plenty of flower buds. A moist soil is 

 essential. 



