HARDY SHRUBS IN GREENHOUSE 261 



like blossom. To be seen at their best, grow them 

 altogether in pots and give the protection of a cool 

 house in winter. 



TREE PEONIES. The magnificent varieties of the 

 Tree Paeony that have appeared in recent years have 

 led to a great increase in their culture. Though 

 hardy in many places, their young leaves and flowers 

 are frequently injured by late frosts, hence they 

 are often flowered under glass. In this way they 

 make a gorgeous display in the greenhouse, which is 

 sufficiently warm for them in all stages. If forcing 

 is attempted they are quickly spoilt. They must be 

 potted in good loamy soil, and are most satisfactory 

 when grown altogether in pots, as many of the long 

 fleshy roots will be injured in digging up estab- 

 lished plants. 



PERNETTYAMUCRONATA. Though grown chiefly for 

 its ornamental berries, neat little bushes are very 

 pleasing in the greenhouse when thickly studded 

 with little white lily-of-the-valley-like flowers, so 

 pretty against the dark-green colouring of the leaves. 

 The treatment recommended for Kalmias is suitable 

 for the Pernettyas. 



PHILADELPHIA (Mock Orange). This in its several 

 forms may be lifted in the autumn and flowered well 

 the following spring, not early, as the forcing must 

 be very gentle. Even then the perfume of P. 

 coronarius is too powerful to be pleasant in a con- 

 fined space. This objection cannot, however, be urged 

 against M. Lemoine's hybrids between this species 

 and the pretty little Mexican P. mitrophyllus, which has 



