THE ORCHID REVIEW. 185 



CALENDAR OF OPERATIONS FOR JUNE. 



By JOHN Mackay, The Gardens, Highbury, Birmingham. 

 For temperatures and management of the various departments see last 

 month's Calendar. 



The cold spell of weather experienced during last month was not at all 

 favourable to the growth of Orchids ; more fire heat was needed in order to 

 keep the temperatures correct than is usual at this time of year, the regulation 

 of which required careful handling. Every encouragement should be given 

 to the plants in each department, by attention to important details, such as 

 watering and damping down, both of which are essential to their welfare. 

 Although there is always something in need of attention in the way of 

 repotting, &c, the bulk of this work will have been attended to. These 

 plants should be given the best possible conditions in their growing 

 quarters, and where this operation has been carried out successfully they 

 will soon begin to show the benefits derived therefrom. Plants that are 

 growing and rooting freely will require water more copiously than hereto- 

 fore, the exception being with plants that are in leaf soil, as a less 

 quantity will suffice in this case. 



Thunias.— Plants of Thunia Bensoniae, T. Marshalliana, T. X Veitchii, 

 and T. alba, which were potted as advised, will be about to expand their 

 flowers and should have every encouragement ; their pots will be now filled 

 with roots and must not be allowed to become dry. Light applications- 

 two or three times a week— of liquid cow manure will greatly assist their 

 development at the present time. After flowering, the plants should be 

 removed to a house where plenty of sunshine and free ventilation can be 

 given to mature the growths, keeping a sharp look-out for red spider and 

 thrips, as these pests are very partial to their tender foliage, but can be 

 kept in check by occasionally sponging the leaves with XL- All Insecticide. 

 Calanthes.— These plants are making rapid headway, and may have 

 water applied more freely, taking care not to do this where the plants are 

 not rooting freely, because excess at this period invariably ends in the 

 foliage and bulbs becoming subject to that disease called Spot, whereas a 

 little extra care would give the cultivator good, strong, clean, healthy 

 growth, which is always more desirable than seeing them in the former 



Cattleya Warscewiczii (gigas).— This is a most desirable species to 

 have, and is certainly one of the most useful late summer flowering 

 Cattleyas when it thrives, and flowers annually. When grown suspended near 

 the roof glass, or in a position where plenty of strong light is afforded, little 

 difficulty is experienced to induce them to flower. Their growths will now 

 be in an advanced stage and will socn be showing their sheaths, and when 



