THE MANUAL OF GARDENING. 
79 
simple flower, and looks well in small clumps in the front of the 
border. It is sometimes used for an edging; it should be parted 
every year to prevent its degenerating, which it will do speedily. 
There are more than half-a-dozen varieties of this modest and 
pleasing flower. Seed may be saved from the double varieties, 
and sown in the spring like other hardy perennials; but the 
common method of propagation is by dividing the plants in 
autumn, or in spring, or both, which is indispensable ; for like 
all spreading plants they greatly deteriorate the soil, and ought 
not to stand more than one year in the same spot. Daisies have 
been very properly recommended for rock-work and baskets, 
training Petunia, &c., over the handles. 
Campanula pyramidalis. — A beautiful perennial plant from 
Savoy. It grows about four feet high, and the top of the stalk 
supports a pyramid of delicate blue flowers. The seed comes 
up readily, if sown in the spring, under a hand-glass, not being 
covered too deeply with earth. In the fall plant in a nursery 
bed; and in the spring plant in the flower borders; but perhaps 
it may not blow till the following year. It may be propagated 
by parting the roots, but the plants decline by this method. It 
is not particular as to soil ; but a light sandy one suits it best. 
The C. persicifolia, or the Paper Bell-flower, is perfectly 
hardy, standing the severest winter. It is grown both in pots 
and in the open ground. There are varieties, both of a pale 
delicate blue, and of a pure white ; and both of these occur double 
as well as single. They run tall, and produce abundance of 
flowers from June till September. The best time to divide the 
roots is after it has done flowering in autumn, though, if neglected 
then, it may be done in the spring. Like the other Campanulas 
it prefers a light sandy soil, and requires full exposure to the 
sun’s rays. A rich soil causes the plant to rot. 
The variety of Campanula called Canterbury Bell, is a bien 
nial, and should be sown every spring to form a succession. It 
may be planted out till November. 
Camelina ccelestus. — This plant was long cultivated as a 
stove plant before it was considered sufficiently hardy to grow in 
the open ground; but it is now found to be equally hardy with 
the Dahlia. The root consists of a bundle of from six to ten 
fleshy long tubers, somewhat similar to the Dahlia root ; the 
tubers, however, not being thicker than a goose-quill. From 
these, in the spring, there shoots up lanceolate leaves, and a 
flowering stem, rising from two or three to twelve or eighteen 
inches high. The flowers are beautifully blue, and succeed 
each other daily from the beginning of May till the end of Sep- 
tember, producing abundance of seed. They are propagated by 
dividing the roots, like Dahlias, or by the seed, which may be 
sown on a moderate hot-bed, with the other annuals, about the 
