To grow these cannas to perfection as well as to enable them to properly develop themselves, they should be given a very deep heavily enriched soil, and as soon as hot, dry weather sets in mulched to the depth of at least two inches with good stable manure, and if the opportunity offers, water copiously during seasons of drought. With this treatment a single tuber will make a clump three or four feet in diameter in a single season; this will give one some idea of the immense amount of foliage and flowers a single specimen will produce.
The plants should not be planted outside until the weather becomes warm and settled, which in this vicinity is about the tenth of May, and as soon as the foliage has been destroyed by the frost it should be cut off, and the tubers dug and stored underneath the greenhouse stage, or in some other situation, where a temperature of 55° is maintained, until the time arrives for planting them outside again.
Or the plants can be lifted on the approach of cold weather, divided, potted up, and grown on for decorative purposes in either the greenhouse or window garden. This is a very safe way to winter over the large flowering cannas or any other variety of which one’s stock is limited.
When grown as pot plants for winter decoration the cannas should be given a compost consisting of two-thirds turfy loam, one-third well decayed manure and a good sprinkling of bone dust, mix well and use the compost rough. The plants should be given as light and sunny a situation as possible and a temperature of 55° to 60°. They should also be freely watered both overhead and at the roots, and as soon as the pots become well filled with roots a little liquid ammonia can be given occasionally or else they must be shifted into larger pots.
Propagation is effected by a careful division of the clumps, and where the plants are to be kept in a state of rest the operation should be performed when they are being planted out in May. In dividing leave two or three eyes or shoots to each plant.
Of the many varieties now listed in catalogues the following are the most desirable and distinct:
Alphonse Bouvier is the grandest deep red variety known, both truss and flowers being very large, and the plant makes a most luxuriant growth of deep red foliage. In color the flowers are of a rich velvety red.
Capt. P. de Suzzini has handsome light green foliage and is the most beautiful of all the spotted varieties. Its flowers are of a rich shade of canary yellow beautifully spotted and dashed with red.
Francois Crozy has bright green foliage and very large flowers which are of a bright orange bordered with a narrow edge of gold—a very rare and desirable color in cannas.
Madame Crozy grows about three and a half feet in height and has broad bright green foliage. The flowers, which are produced in massive spikes, are of a bright crimson scarlet beautifully bordered with gold. The plant commences to bloom when about one foot in height.