Seedlings should be protected from frost during the first winter.
Any attempt to interfere with these directions, by placing the seedlings in abnormal positions, is frustrated by the seedlings themselves, which change their direction of growth by bringing about curvatures of the different parts of their axes, so that the root soon grows vertically downward again and the stem in the opposite direction.
The pricking out of seedlings in pots in the propagating pit is effected in a similar way.
Thus shallow square or oblong wooden boxes, made of light, inexpensive wood, are very useful for seedsowing, for pricking out seedlings, or for planting cuttings.
It is from having ample room that pricked out transplanted seedlings often make the finest plants.