require the plants to be
re-potted, remove as much of the old soil as possible without injuring
them, and put them into the smallest sized pots into which they can
be got, with fresh soil. This may be done after the last flower has
fallen, or after the buds have fairly commenced to push. The plants
may be placed out of doors at the beginning of June, and returned to
the greenhouse in October. There are several varieties suitable for
growing in the open. These should be provided with a soil, 2 ft. deep,
composed of peat, leaf-mould, and cows' dung. The roots should
always be kept moist and cool, and the plants disturbed as little as
possible. A top dressing of fresh soil may be given each winter, and
the plants protected from frost by binding straw round the stems.

Campanula.--A showy genus of plants, mostly hardy perennials, which
need no special treatment. They are readily raised from seed, or
division of roots. The less hardy kinds may be sown on a hotbed or in
the greenhouse, and when large enough potted off. Campanula Mayii is a
grand plant for hanging baskets, and also grows well trained up
sticks in a pyramidal form. A rich, gritty soil suits them all. The
tall-growing varieties make fine pot-plants. Flower in July. Height, 1
ft. to 5 ft.

Canary Creeper (_Tropaeolum Canariense_).--This is eminently suitable
for trellis-work or for walls. Its elegant foliage and bright yellow
flowers make it a general favourite. It may be raised from seed on
a hotbed in spring, gradually hardened off, and planted out in May.
Height, 10 ft.

Candytuft (_Iberis_).--Very pretty hardy annuals. Sow the seed in
autumn in a light, rich soil, or in spring if a less prolonged
flowering season will give satisfaction. Bloom in May or June. Height,
1 ft.

Canna (_Indian Shot or Hemp_).--For pot-plants on terraces, gravel
walks, and such like places, few things can equal and none surpass
Cannas. They are half-hardy perennials, and may be increased from
seed or by dividing the roots late in autumn, allowing them first to
partially dry. File the tough skin off one end of the seed, and steep
it in hot water for a few hours before it is sown, then stand it in a
hot place till it has germinated. Harden off and plant out, or shift
into larger pots in June, using a rich, light soil. Lift and store the
roots in autumn in the same way as Dahlias. Different kinds flower at
various seasons, so that a succession of bloom may be had throughout
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