March.'] HARDY biennials. 33 
their being everywhere accessible. Iris humilis, Viola tri- 
color, thyme, Sea Pink (Stattice Armaria), Mignonette, 
Phlox subulata, and Plox procumbens, all make tolerable 
edgings. In the Southern States, Euonymus Japonica, kept 
closely sheared, will make a very handsome green edging. 
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 Septem- 
ber. When they appear above ground, thin them out dis- 
tinctly, 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 elegant 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, recpiire 
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 double I Bloom in June 
Canterbury bell, ( and July. 
Campanula media, alba, white Canterbury 
bell, 
Campanula thyrsoides. 
Cheiranthus cheiri, Wall-flower, should be protected by leaves 
or boards during winter. 
Digitalis purpurea, purple Foxglove. 
alba, white Foxglove. 
