The Garden Under Glass

124 THE GARDEN UNDER GLASS they do exceedingly well for cut flowers. Tall kinds, such as Sutton’s Mammoth, make grand specimens in large pots. They have to be watered carefully. It is some-times found a good plan to pot up asters in order that they may be kept back until some other plants, whose place they are to take, have finished flowering. Canterbury Bells.—Delightful as pot plants. They may be potted up just before they throw up their flower spikes ; or, when quite seedlings, they may be potted into 3-inch pots, and eventually moved along so that three plants will flower in a 9-inch pot. Only clear, soft colours of the single varieties are advised. Campanulas.—I here refer to the tall chimney cam-panulas. As with Canterbury belis, I prefer to get them in their pots quite early in their career. Sow in spring, prick off into boxes, pot into 3-inch pots, and through 6-inch to their final 9-inch pots. They will not flower the same season they are sown, but if given hardy treat-ment and liberal feeding they should eventually form good specimens and may afterwards be planted out in the borders. Blue and white forms are available. Clarkias.—These grow taller as pot plants than they would outside. They may very well be treated in the same manner as advised for schizanthuses. They are rather impatient of root disturbance and should be carefully looked after, following the pricking out and potting. Sutton’s Firefly should certainly be grown. Godetias.—Godetias are strong rivals to Clarkias for the purpose of furnishing the greenhouse and providing cut flowers, especially as they are more compact in habit and some forms are much more dwarf-like. Sow in autumn and grow along in cold quarters to flower in the spring. Heliotropes.—Heliotrope is quite populär on account