The school tulip bed was made just as Philip's round bed was made. The time to plant depends on the weather. It is always well to get all outdoor planting done before the time of frost. Why? Because you wish to get the bulbs in while the earth is still warm. Bulbs lie in the ground all winter slowly putting out roots, slowly starting to push up toward the light above. For good root forming they need this long time of slow growth. Get the outdoor bulbs in the ground during September.
Before this the ground may be prepared. In all the beds dig down about two feet. Work over the soil well. Make it fine and free from lumps and stones. Ordinary garden soil will be right for these beds. Put no fertilizer in. If your ground is clayey, mix sand with it. Use one-quarter sand in a mixture of this sort. This makes a lighter soil. Clay soil is what we call a heavy soil. Bulbs require light soils.
Now comes planting. Different kinds of bulbs require different depths of soil. Place the tulip bulbs four inches deep, and six inches apart.
Hyacinths were planted by Elizabeth in a strip beside the house. Jack also planted daffodils in a corner sheltered by the house foundation and an old high fence. The daffodils were planted exactly as the tulips, but the hyacinths were planted six inches deep, instead of four.
In buying bulbs for outdoor planting ask for bedding bulbs, while for indoor work buy forcing varieties.
One bright day in October the girls met at Katharine's house to pot their bulbs for winter. Some had made wooden boxes or flats during the winter; others had bought low pots; while still others had the ordinary high pot.
In potting bulbs or any other plant two things are to be kept in mind—first, the soil, and second, the drainage. The soil may be any good garden soil. To a given quantity one may add one-fourth rotted manure and one-fourth sand. This last helps lighten the material, allowing more air to get at the entire mass and making good drainage easier. Mix all this together. If one lacks the well-rotted manure and sand, any good garden soil may be used. Sift the soil until it is perfectly fine.
A simple sieve, which works well, may be made from a small soap or starch box. Knock the bottom out and use in place of this wire netting. Helena and Eloise made two sieves which did for all the girls. Eloise also made some very good flats as described before under the chapter on the girls' winter work. You can easily see how excellent this style of flat is from a drainage point of view.
More trouble, in potted bulbs and all kinds of plants, comes from too little drainage space than from any other one thing. Most boys and girls think it enough if one little stone or piece of pot is put in the hole of the flower pot. Not so; there should be from one to two inches of drainage material in the pot. That seems a great deal, doesn't it? But it will give not only drainage but air space, too, and this keeps the plant in good healthy shape. With too little drainage area the earth in a pot gets clogged and very often sour. A high pot needs more drainage matter in it than a low one. First use a piece of broken pot to place over the drainage hole. But put this in such a position that the drainage hole will be kept open. Then put in two inches of coarse material like broken pot. It is now a good plan to place over this a layer of coarse material. This gives a greater opportunity for air. Over this goes the soil you have already prepared. Place bulbs just below the surface and have soil one inch below the top of pot. Narcissus and hyacinths may be planted with their tops out of the soil.
A low pot needs less drainage material. Some pots have sphagnum moss over the drainage. Instead of this use old sod finely torn up or coarse soil. See, too, that the bulb comes nearly to the top of the soil. When indoor bulbs are planted at some distance below the surface of the soil they have too much work to do to force their way up and out. It takes too long.