68 SUMMER AND AUTUMN FLOWERS [CH. 



moisture in summer, and should be divided in March and 

 replanted in bold groups every two or three years, as 

 the roots multiply exceedingly. 



Tritonia or Montbretia or Crocosmia are similar 

 African bulbs, and require like treatment. They, too, 

 spread very quickly. 



Trollius (Globe-flower) has a ranunculus habit and 

 vigorous growth. It varies from a pale yellow to deep 

 gold, and blooms all through early summer. The plants 

 grow freely on any soil, but seem to demand a cool, moist 

 sub-soil and plenty of manure. 



Verbascum {Mullein) a handsome biennial. Like the 

 Foxglove, when once established on a border, it will shift 

 for itself. The best are olympicum and phlonwides. 



Vinca (Periwinkle) is a trailing plant too well known 

 to need description. It is, however, such a free grower, 

 that once established, it will need constant repression. 

 The common blue and the variegated Vinca are useful 

 for covering roots and spots where little else will grow. 

 Of Vinca minor there are several varieties, one with a 

 tiny white flower, and two with flowers like double 

 violets. 



