FORM III
SPRING
WINDOW BOXES
Many garden plants should be started in a box of earth in a warm, sunny window. In some schools this can be done with a little care in heating on cold nights. Small boxes or grape baskets full of rich sandy loam with an inch of gravel in the bottom for drainage may be used. Sow the seeds in rows or broadcast. To prevent the soil from drying out too quickly, cover the box with a pane of glass. When the plants are up, give them plenty of light and not too much warmth. On very mild days set them in a warm, sheltered place out-of-doors and bring them in again early in the evening. This tends to make them hardy. When about three inches high, pick the young plants out and set them in other boxes a few inches apart. This moving causes the formation of numerous fibrous roots and makes stronger plants.
WINDOW GARDENS
Window boxes may be used for a whole season on the inside of the building in cold weather, and on the outside in warm weather. There is almost no limit to the kinds of plants that can be grown in them, but they are most suitable for flowers.
Good boxes may be made of dressed lumber so as to fit on the window-sill. They should be six inches deep, ten inches wide, and the required length. They should have a few small holes in the bottom to allow excess water to drain off and should be painted dark green or some quiet colour. There should be an inch of gravel in the bottom, some rotted sods covering this, and then the box filled with rich sandy loam.
SUITABLE PLANTS
Some flowers suitable for growing in window boxes outside in summer are those of drooping habit: lobelia, Kenilworth ivy, verbena, tropeolum, petunia, and sweet-alyssum toward the front, and behind, more erect plants, such as geranium, heliotrope, begonia, phlox, and nasturtium. The box must not be too much crowded.
For inside and in shady situations the following are suitable: tradescantia, parlour ivy, moneywort, vinca smilax, climbing fern, asparagus fern, dracæna, coleus, centaurea, sword fern, and Boston fern. For indoor boxes in winter, the following may be used: abutilon, calceolaria, cyclamen, violets, primroses, petunias, geraniums, freesia, and such foliage plants as dracæna, cannas, dusty miller, and coleus. The following climbing plants may be trained up the window cases: asparagus plumosus fern, cobea scandens, smilax, maurandia, and English ivy. If drooping or trailing plants are desired, the following may be used: oxalis, sweet-alyssum, lobelia, ivy, geranium, Kenilworth ivy, and Wandering Jew.