This section is from the book "The Gardener V1", by William Thomson. Also available from Amazon: The New Organic Grower: A Master's Manual of Tools and Techniques for the Home and Market Gardener.
A few years ago I received a quantity of plants from Italy, chiefly composed of varieties of Orchis and Ophrys. They - i.e., the Orchi-daceee - were all lifted during the period of growth, many while in flower. They were potted at once in a mixture of equal parts light loam and sand, and set in a cold frame, where they were allowed to remain all the winter, very little water being given them, and only protected by a mat during frost. "Well, I really thought I had seen the last of them, but early the next spring the majority of them began to make their appearance; water was administered rather more freely, and in May and June a large number of them flowered. When the bloom was over, and they had gone to rest, they were repotted in the same compost as before, and treated in precisely the same manner as the winter and spring preceding, with the same result. There are in flower at present, Ophrys fusca, Orchis provincialis, Ophrys olbiensis, and others. I have noticed that those which were put at the side of the pot succeed much better than those put in the middle. If any of your many correspondents could give me any information respecting the culture of this interesting class of plants, I should be very much obliged.
Hafodunos, North Wales.