86 ORCHIDS : HOW TO GROW THEM SUCCESSFULLY. 



different treatment to most of the Cool-house Orchids, it is one 

 that I feel constrained to recommend to amateurs, as the treatment 

 required is so simple. It should be potted in chopped fibrous peat, 

 with a liberal supply of coarse silver sand, filling the pots one 

 quarter of their depth with crocks, and placing over them a thin 

 layer of sphagnum, making the tubers moderately firm in the pots, 

 and leaving their crowns slightly below the surface of the soil. 

 The best time for repotting them is in the autumn, immediately 

 after the plants have flowered, when a new growth starts from the 

 side of the old flower spike. During the winter months Disas should 

 occupy an airy position in a Cool house, or a place may be found 

 for them with the Odontoglossums on a shelf near the glass, at 

 the coolest end if possible, and near to a ventilator. In April 

 they should be removed to a cool frame, having a north aspect, 

 which is, or can be, shaded from the sun's rays, and the plants 

 should be well syringed night and morning and never allowed to 

 become dry. They should also be examined occasionally for red 

 spider and aphis, which sometimes attack the plants. Under such 

 treatment as I have recommended Disa grandiflora will grow freely 

 and multiply, and the great beauty of its flowers will be seen from 

 August to October. Keep them just moist only during winter or 

 "rot" will occur. The colour is a rich scarlet, with light markings, 

 and strong plants can be purchased at about 5s. each, established 

 or newly imported. 



DENDROBIUM JAMESIANUM. From Moulmein. 



There are but few Dendrobiums which can be cultivated with much 

 success in a Cool house, but this species is suitable, and when well 

 grown is a stately Orchid, producing fine trusses of large and beautiful 

 white and yellow blooms. The usual compost I have recommended for 

 Orchids suits it, and it can be grown in small baskets suspended from 

 the roof, near to the glass, and have plenty of water when growing, 

 and during the winter it should never be allowed to become dry enough 

 for the pseudobulbs to shrivel, and removed to an Intermediate house. 



Strong plants, with one lead, are obtainable for about 5s. to 7s. 6d. 

 each; and, in purchasing this Orchid, it is best to obtain newly 

 imported or semi-established plants, as they start into growth much 

 more satisfactorily than old plants. 



CYPRIPEDIUM INSIGNE. From Nepaul. 



This old species of the " Lady's Slipper" is a great favourite, and 

 is found, like Ccelogyne cristata and Dendrobium nobile, in almost 

 every collection of plants in all gardens of note throughout the country. 

 It should be grown in pots in a compost of fibrous peat, broken 

 charcoal, silver sand and sphagnum moss. The pot should be well 



