nts that will bloom the first season when
grown from the seed, though such seedlings are seldom so good as the
plants from which they came. They are generally used to originate new
varieties. Seeds of the dahlia, for instance, can be sowed in a box in a
warm room in early March, potted as soon as the plants are large enough
to handle, and finally planted in the garden when the weather is warm.
They will bloom nearly as soon as plants grown by dividing the roots or
from cuttings.
[Illustration: FIG. 100. OUTDOOR-GROWN CHRYSANTHEMUMS]
In growing annual plants from seed, there is little difficulty if the
grower has a greenhouse or a hotbed with a glass sash. Even without
these the plants may be grown in shallow boxes in a warm room. The best
boxes are about four inches deep with bottoms made of slats nailed a
quarter of an inch apart to give proper drainage. Some moss is laid over
the bottom to prevent the soil from sifting through. The boxes should
then be filled with light, rich soil. Fine black forest mold, thoroughly
mixed with one fourth its bulk of well-rotted manure, makes the best
soil for filling the seed-boxes. If this soil be placed in an oven and
heated very hot, the heat will destroy many weeds that would otherwise
give trouble. After the soil is put in the boxes it should be well
packed by pressing it with a flat wooden block. Sow the seeds in
straight rows, and at the ends of the rows put little wooden labels with
the names of the flowers on them.
[Illustration: FIG. 101. THE CARNATION (ELDORADO)]
Seeds sowed in the same box should be of the same general size in order
that they may be properly covered, for seeds need to be covered
according to their size. After sowing the seed, sift the fine soil over
the surface of the box. The best soil for covering small seeds is made
by rubbing dry moss and leaf-mold through a sieve together. This makes a
light cover that will not bake and will retain moisture. After covering
the seeds, press the soil firm and smooth with a wooden block. Now
sprinkle the covering soil lightly with a watering-pot until it is
fairly moistened. Lay some panes of glass over the box to retain the
moisture, and avoid further watering until moisture becomes absolutely
necessary. Too much watering makes the soil too compact and rots the
seed.
As soon as the seedlings have made a second pair of leaves, take them up
with the point of a knife and transplant them into other boxes filled in
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