Next come the gold fish. For a tub, only two are necessary, but for a pond one hundred feet in diameter, twenty-five should be used. These fish spawn in June and have been known to breed enough to stock a large pond. There is an old theory,—doubted by many, that the old fish turn cannibals and devour their progeny. These people advise the putting of roots and stock into a tub, this is so the egg may be attached, removed, and hatched separately. In cases like this the small fish are allowed to grow considerably before being returned to the tub.
There are two kinds of tubers, the tender and the hardy. The latter require practically no care during the winter months, that is, always provided the water is deep enough to allow no freezing of the crown of the plant. They should be planted about the first of May and both varieties can be given the same treatment, with the exception that the hardy variety do best when planted in soil two feet deep and covered with six inches of water.
All pools should have planting in addition to the tubers of submerged plants. This is to aerate the water and keep it pure and sweet. The best kinds to be used for this purpose are Anacharis Canadensis Gigantea, and Canbomba Viridifolia, ten of them being enough for a large pool. The former is a giant water weed with dark green ovate leaves and light stems. It is a quick grower and considered by authorities to be one of the best oxygenators in existence. The latter, sometimes known as Washington grass, is also popular. It has brilliant glossy green leaves, fan-shaped and more beautiful than a delicate fern. In addition to this why not use the Ludwigia Munlerti, which is one of the prettiest submerged plants. It shows small ovate leaves that are green on the upper side and pink on the under. This makes it distinct from any other aquarium plant.
A great help in the way of nourishment for these water lilies is the application when first planted or in the early spring of dried blood manure. The proper way of using this is to broad cast it on the surface of the water, using one pound to every ten square feet of surface.
Too many people make the mistake of keeping the water too cold. This necessitates the filling of the pool and the leaving it to grow warm through exposure to the sun for several days before planting. When additional water has to be added, it should be some that has stood in the sun for several days, as cold water injures the growth. The condition for growth is the same for both the tender and the hardy Nymphæas with the exception that the former should not be planted until after warm weather sets in. It is well, however, to grow them in pots so that they will be of fair size by June first when the weather has become suitable for their outdoor existence.
If the pond is to be large, why not use groups, but if small, single ones will do. For their planting, the hardy variety can be sown in either fall or spring, as one fancies. They should have a small hole cut through the shell of each seed with a sharp knife that they may do better. For the tender kind, do not put them out until they are well started. They should be sown in pots or pans, covering the seeds with one-fourth of an inch of sand, giving them a thorough watering and allowing them to drain for an hour. Then submerge them under two inches of soil at a temperature of seventy degrees. These can be removed into separate pots when they have shown two leaves. This kind is very desirable for cutting, the best for this purpose being the night-blooming varieties.
The Pygmæa hybrid type and the Laydekri, as well, are desirable for hardy variety. The former is the smallest water lily in cultivation, a free bloomer showing white flowers, one and a half inches in diameter, while the Pygmæa Helvola, yellow in coloring, is very dainty. A combination of these two colors is always interesting, while if you wish the latter kind, why not try the Laydekria Rosea, which is a French hybrid and one of the earliest in introduction. Only a few specimen plants are found cultivated at the present time. The flowers are of delicate pink with a deep golden center that deepens into a dark shade of rose, presenting a novel feature in that it seemingly is one plant showing different colors. Another variety of this same order is the Laydekri Lilacea, three to five inches across, shading from rosy lilac to bright carmine and sending forth a fragrance like a tea rose. The Sultan is also very valuable on account of its free flowering, the plants showing never less than six flowers open daily. These are of good size Solferina red with white shading and yellow stamens. This is very rare and therefore brings a high price.
THERE IS AN EVER-CHANGING BEAUTY TO A GARDEN WHOSE PATHS ARE BROKEN HERE AND THERE BY POOLS