The Garden p.303, October 9, 1875
THE GIANT IRIS.
This variety, which has been named I. gigantea, appears to be quite new. In addition to its unusual proportions, its flowers, though inodorous, are large in size, and very beautiful. Planted in damp, somewhat stiff, soil, on the margin of water, it attains comparatively a colossal size, and it is possible that it might be treated wholly as an aquatic, and used in the embellishment of ornamental water in fact, it is almost certain that it would thrive under these conditions. This giant species, in all probability, came originally from central Asia; but it was received by M. Oudin, a horticulturist at Lisieux, from Vienna, some years ago, under the name of the Pomeranian Iris. Judging from its hardiness, it must come from a cold country, as the severest winters do not injure it in the least. It succeeds in all kinds of soil, but thrives best, as has been stated, in damp, somewhat stiff loam. As regards propagation it is effected by division of the rhizomes, the growing points being best adapted for the purpose. In order to induce the formation of buds on old rhizomes, which are nearly always without them, instead of dividing them entirely, cut them about three parts through with a spade or other implement, when adventitious buds will be produced on the cut portions, which will then be quite as useful for purposes of propagation as the growing points. I. gigantean often attains a height of nearly 5 feet, the flower-stems being strong and upright. The external divisions of the flowers are yellowish-brown in colour, striped at the base, the internal divisions being white. The leaves are straight and thick, and are produced in fan-like masses. " Revue Horticole."
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