280 TREES AND SHRUBS 



R. sanguineum can be brought into flower early 

 under glass, but the flowers do not last long, and 

 for this reason the shrubs are little used for the 

 purpose. 



SPIRAEAS. An extensive family, some of which 

 bloom delightfully when lifted and potted in the 

 autumn and brought into flower in gentle heat. 

 They may also be grown permanently in pots, but 

 as a rule autumn potting is preferable. The most 

 popular is S. confusa or media, but also very charming 

 are S. arguta, one of the most beautiful of all Spiraeas, 

 S. Van Houttei, S, Thunbergi, and 5. prunifolia fl. pi., 

 which all bear white flowers, those of the last men- 

 tioned being double. 



STAPHYLEA (Bladder Nut). S. colchica is most 

 used for forcing, and is a charming shrub for the 

 purpose. It quickly responds to heat and moisture. 

 Brought on in a gentle greenhouse temperature, it 

 gives a wealth of drooping clusters of white fragrant 

 flowers. Keep the shrubs in pots, as the buds are pro- 

 duced more freely than when planting out is done, 

 and after the flowers are over prune hard back. 

 There is a hybrid between S. pinnata and S. colchica, 

 called Columbieri, which is better than S. colchica. 



SYRINGA (Lilac). The Lilac is one of the most 

 popular of shrubs for forcing, and may be had in 

 bloom by Christmas or soon after, its flowers being 

 welcome from then until they appear out of doors. 

 Thousands of plants for flowering under glass are 

 prepared in the most careful way every year, the 

 neat bushes, about 2 feet high, having been grown 



