264 



THE BOOK OF GARDENING. 



growing freely all the summer. If flowers appear they must 

 be pinched out in the bud state, so that the whole energy of 

 the plant may be directed towards making a good strong 

 specimen, able to withstand the winter. 



In the '? following list of species and varieties all the more 

 popular florists' flowers, as well as bulbs and tubers, have been 

 intentionally omitted, as these have been separately treated 

 in chapters devoted to those plants ; while further enumeration 

 of species and varieties will be found in the "Appendix.'' 



Achillea Ptarmica flore-pleno (Double Sneezewort) is a 

 useful border plant, growing 2 ft. high, and producing an abundance 

 of double white flowers in corymbs ; these are invaluable for 

 cutting, and may be had from July to September. Propagation 

 by seeds, cuttings, or division. 



Aconitum Napellus (Common Monk's Hood) is a tall Lark- 

 spur-like plant, growing from 3ft. to 4ft. high, and bearing numerous 



blue helmet-shaped flowers on 



large terminal racemes. It is of 



easy culture, and forms a very 



effective border plant, suitable 



also for shrubberies', wild gardens, 



&c. ; it must, however, be planted 



where there is no fear of cattle 



getting at the roots, which are ex- 



, 1 tremely poisonous, and although 



^jEj^J quite distinct, have sometimes been 



fljj mistaken for Horse-radish, with 



1 NH fatal results. The variety album 



U w^~ has white flowers, and bicolor blue 



I 'jJ^dtea and white. Both varieties, as well 



as the type, flower from June 



to September. Propagated by 



seeds or division. 



Agrostemma coronaria.— A 

 synonym of Lychnis coronaria. 



Aquilegia (Columbine) is a 

 genus of free-flowering subjects 

 of easy culture in ordinary 

 garden soil. They are suitable 

 for beds, borders, shrubberies, 

 &c, and thrive in shady situa- 

 tions. They are also very 

 beautiful when naturalised in grass ; and the flowers are also 

 prized for cutting. Aquilegias are propagated by seeds or by 

 division, the latter method being the only safe way to 



Fig. 148. — Aquilegia Stuartii. 



