158 TREES AND SHRUBS 



Genista iinctoria fl. pi. — A low-growing trailing 

 Genista, useful for the rock garden and flowering when 

 many of the alpines are over. 



Genista virgata. — A very different plant to the 

 above, and will make a very large bush, covered 

 with pale-yellow flowers in late summer. A good 

 shrub. 



Halesia tetraptera. — Quite hardy and attractive both 

 in bloom and foliage. 



Hamamelis arborea. — This is quite hardy, but grows 

 very slowly. It flowers in a small state, but not very 

 freely. I have only had this plant for four years, but 

 I think it will do very well, and should flower more 

 freely when a bit larger. 



Hedysarum muUijugum. — Quite hardy. An attractive 

 shrub, with spikes of reddish pea-like flowers in July 

 and August. It increases freely from the root by 

 suckers. Thin and cut back the shoots in spring. 



Helianthemum vulgare (Rock Rose). — There are 

 many garden varieties of this, both double and single, 

 the single sorts being the most attractive. They are 

 quite hardy on a warm and sunny rock garden. 



Hydrangea paniculata. — Hardy. A splendid low- 

 growing shrub, flowering in autumn. A group of 

 this, with a few plants of Prunus Pissardi cut hard 

 back every spring to keep them small, is very effective, 

 and the group can be carpeted with Lily of the 

 Valley or London Pride to cover the bare soil under- 

 neath. The shoots of the Hydrangea should be well 

 thinned, and those left cut hard back in the spring. 

 It well repays a dose or two of liquid manure in the 



