A sandy soil suits the crocus admirably. Plant in the fall, in the open, 3 to 4 inches deep. When they show signs of failing, take up the bulbs and reset them. They tend to rise out of the ground, because the new bulb or corm forms on the top of the old one. They run out on lawns in two or three years. If best results are desired, it is well to renew the bed occasionally by buying new bulbs. Crocus beds may be filled later in the season with quick-growing annuals. It is important that only the best flowering bulbs be secured.
They may be forced with ease, planted in pots or shallow boxes, put away in a cool place and brought into the house at any time through the winter. A low temperature will bring them into bloom in perfection in about four weeks from the time they are brought in. They can be had in the window-garden in this way, opening in the sunshine.
Croton.—Under this name many varieties and so-called species of Codiæum are grown for conservatory decoration, and latterly for foliage bedding in the open. The colors and shapes of the leaves are very various and attractive. The crotons make good window-garden subjects, although they are very liable to the attack of the mealy bug.
The plants should be given an abundance of light in order to bring out their fine colors; but it is usually advisable to screen them from the direct rays of the sun when they are grown under glass. If the red spider or the mealy bug attack them, they may be syringed with tobacco water. Plants that are propagated indoors in winter may be massed in beds out of doors in summer, where they make very striking effects. Give them strong deep soil, and be sure that they are syringed frequently enough on the underside of the leaves to keep down the red spider. If the plants have been gradually subjected to strong light before they are taken out of doors, they will stand the full sunlight and will develop their rich colors to perfection. In the fall they may be taken up, cut back, and used for window-garden or conservatory subjects.
Crotons are shrubs or small trees, and they may be transferred into large pots or tubs and grown into large tree-like specimens. Old and scraggly specimens should be thrown away.
Crotons are propagated readily by cuttings of half-ripened wood any time in winter or spring.
Cyclamen.—A tender greenhouse tuberous plant, sometimes seen in the window-garden. The Persian cyclamen is best for the house-gardener to grow.
Cyclamens may be grown from seed sown in April or September in soil containing a large proportion of sand and leafmold. If sown in September, they should be wintered in a coolhouse. In May they should be potted into larger pots and placed in a shaded frame, and by July will have become large enough for their flowering pot, which should be either 5-inch or 6-inch. They should be brought into the house before danger of frost, and grown cool until through flowering. A temperature of 55° suits them while in flower. After flowering, they will need a rest for a short time, but should not become very dry, or the bulb will be injured. When they start into growth, they should have the old soil shaken off and be potted into smaller pots. At no time should more than half the tuber be under the soil.
April-sown plants should be similarly treated. Cyclamens should bloom in about fifteen months from seed. The seed germinates very slowly.
Tubers large enough to flower the first year may be purchased from the seedsmen at moderate prices; and unless one has facilities for growing the seedlings for a year, purchase of the tubers will give the best satisfaction. Secure new tubers, for old ones are not so good.