34 HARDY BIENNIALS. \_Mdrch. 



HARDY BIENNIALS. 



Biennial plants are such as are of two years' duration. 

 Being sown this year they flower, seed, or fruit next year, 

 and soon after decay : the seeds should be sown about the 

 end of this month or beginning of next, either in the spot 

 where they are to remain or a compartment by themselves, 

 regularly marked, and to be transplanted in May or Sep- 

 tember. When they appear above ground thin them out 

 distinctly, that, when they are to be removed, a little earth 

 may adhere to them: and, if sown where they are to 

 stand, leave only three or four plants in each patch. The 

 following list are a few of the free-blooming and more ele- 

 gant sorts : 



Agrostemma coronaria, Rose Campion, blooms all summer. 

 Althea rosea, Hollyhock, and all its varieties, very showy 



in July and August. When any very desirable 



variety is procured, it can be multiplied by dividing 



the root. 

 Antirrhinum majus, Snap-dragon, and its varieties, require 



to be protected during winter with a few leaves or 



litter. 

 Cantua coronopifolia, flowers in August and September, 



beautiful scarlet, delights in dry gravelly soil. 

 Ipomopsis elegans. 

 Campanula media, dark blue Canterbury"! 



bell, 

 Campanula media, semi-pleno, half dou- [Bloom in June 



ble Canterbury bell, j and July. 



Campanula media, alba, white Canterbury 



bell, J 



Campanula thyrsoides. 

 Cheiranthus cheiri, Wall-flower, should be protected by 



leaves or boards during winter. 

 Digitalis purpurea, purple Fox glove. 

 alba, white Fox glove. 



Dianthus barbatus, Sweet William pink. 



coccineus crimson pink. 



fl. pi. double-flowered ; the double sorts 



can be propagated by laying, same as 

 carnations. 



