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It is doubtful if the true mesopotamica can be grown with success in this country. M. Denis in the South of France gave me some plants and predicted I would not succeed with them. He was correct; I can no more grow them than I can the white Iris of Kashmir. In 1907, and again in 1922, I received some roots of this variety; they flowered in the following year, and towards the autumn they grew apace, so much so, that when the winter set in and other Irises discarded many of their leaves, my clumps exhibited no signs of withering. Fearing they would be caught by wind and frost I had them enclosed within a screen and protected overhead. The following year, 1923, they did not bloom, and although at the moment the plants have an abundance of leaves, some of which are broad and large, their colour is not healthy; too yellow and inclined to be blotchy and irregular in tone.
.....Pumila Irises I have grovn for a number of years, having either collected the original plants myself when in my younger days business or climbing mountains took me into the near East, or else they have been sent to me from Macedonia, Bulgaria, Roumania, Turkey, or Armenia. It was my good fortune to have Dr. Post of Beyrout, the author of "Flora of Syria, Palestine, and Sinai" in my party on the Mysian Mt. Olympus. We camped at different altitudes and collected some 140 varieties of plants above an altitude of 5-6,000 feet. Dr. Post was an indefatigable worker, for, although by no means a young man, he never would rest or eat his meal on returning to camp for the day until he had sorted and pressed all the plants he had collected.
.....Pumila Irises of the natural species are not as easy to grow as the Germanica They sulk and sometimes for no apparent reason refuse to bloom. Like the Oncocyclus they need special study; one has to learn the conditions under which they grow in their own habitat and cultivate accordingly.
.....In Greece and the Levant the rains are usually torrential in September- October and continue with more or less rain, snow ni-id sunshine throughout the winter. In April-May fine weather sets in and lasts throughout the summer. From July to September the rhizomes get a thorough baking and it is under these conditions that we also must treat this species in order to insure successful culture.
.....I have had many failures which would bring to despair many gardeners, but these dwarf Irises appeal to me as friends, I have lived with them in the hills and notwithstanding disappointments, I have had some delights; I cannot and will not abandon them. I have one much treasured clump of a variety of balkana from the battle front in Macedonia, the hills overlooking Lake Doiran, sent home eight years ago. The colony now composed of some ten plants is growing in a somewhat raised position within the rim of a barrel cut in half, its bottom knocked out and inserted in the ground. It of course has good draining and is made up of loam and mortar rubbish. I ripen the rhizomes very much as one does the Oncocyclus variety by covering the plants with a frame, though of course in a less severe degree. In October -November I give fresh soil and growth starts again.
.....As Mr. Dykes points out, mellita, balkana, rubro-marginata, Reichenbachii and other of the pumila varieties are closely allied one to the other, and accordingly the treatment for one applies to all.
.....In conclusion a word of caution: do not encourage your Irises to out-grow their strength. I have in my mind a noble and curiously coloured variety introduced by M. Denis with much Ricardi strain in its constitutiori named Mme. Durand. Three years ago this plant bloomed and seeded so generously that towards the end of the summer it lost all its leaves and looked hopelessly dead. When I took up the rhizomes I found them without roots; accordingly I replanted them in a specially prepared new bed and now after two years they have recovered their normal vitality and promise again to bear offspring. Irises after all are only like all other plants and must not be expected to do too much.

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