Camassia Esculenta.—­A handsome, hardy, bulbous plant, bearing clusters of beautiful blue flowers in July.  It needs a sandy peat border under a north wall, and is increased by bulbs or seeds.  Plant the bulbs early in October, 4 in. deep and 5 in. apart.  Height, 1-1/3 ft.

Camellias.—­The best soil for these beautiful greenhouse evergreens is a mixture of rough peat, plenty of sand, and a little turfy loam.  The greenhouse should be kept rather close, at a temperature of 55 degrees to 60 degrees, while the plants are growing; but abundant syringing is necessary at all times.  Induce a vigorous growth of wood, and let this be well matured by exposure to the sun and free ventilation.  Old and straggling plants may be renovated by cutting them hard back as soon as they go out of flower, and placing them in a warm house where a moist atmosphere is maintained.  This will induce them to break.  Comparatively little water should be given for some time after they are cut back.  When the state of the roots 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.