BULBS AND THEIR CULTIVATION. 



Boussingaultia The Madeira Vine (B. baselloides) 

 bears fragrant white flowers and fleshy leaves on slender 

 annual stems. A suitable plant for covering a sunny trellis 

 or trailing over a bank in summer. Kequires a warm soil. 

 In cold districts lift the tubers in autumn, store in sand, 

 and plant out in spring. Increased by division. 



Com me Una. The only species (C. ccelestis) is a 

 pretty blue-flowered plant with tuberous roots. There is 

 also a white variety, named alba, and both do well in sea- 

 side or sunny gardens. In well-drained soils this Mexican 

 plant can be grown permanently in the garden, but in cold 

 soils it is better to lift the tubers in autumn, store them 

 in sand in a cool place, and plant out in spring. Increased 

 by division. 



Corydalis. The species bulbosa and tuberosa are 

 interesting plants for naturalising in woodland gardens 

 or rough borders. See table of Hardy Tuberous-rooted 

 Plants (p. 43). 



Cyclamen. We have but little to add about these 

 charming winter and spring flowers to what has been 

 supplied in the tabular list. Suffice it to say, these 

 dainty plants appear most at home when naturalised on 

 grassy slopes or in turf under the shade of deciduous trees. 

 They may, however, be grown successfully on a rockery 

 facing north or north-west, where there is little risk of 

 their being disturbed or overgrown by other plants. 

 Increased by seeds sown in pans of peat and leaf-mould 

 in a cold frame. 



Dahlia. The dahlia is, of course, a tuberous-rooted 

 plant, and strictly entitled to come within the scope of this 

 work. As, however, its many types require more cultural 

 details than we can afford space for, we shall refrain from 

 saying more here than that it is, as well known, one of the 



