CACTUS CULTURE for Amateurs C C a aCtus ulture for mateurs. Fig. 1.—A COLLECTION OF CACTUSES. Frontispieece. C C ACTUS ULTURE F O R A M A T E U R S : BEING DESCRIPTIONS OF THE VARIOUS CACTUSES GROWN IN THIS COUNTRY, WITH FULL AND PRACTICAL INSTRUCTIONS FOR THEIR SUCCESSFUL CULTIVATION. By W. WATSON, Assistant Curator of the Royal Botanic Gardens, Kew. PROFUSELY ILLUSTRATED. LONDON: L. UPCOTT GILL, 170, STRAND, W.C. 1889. LONDON; PRINTED BY ALFRED BRADLEY, 170, STRAND, W.C. P R E F A C E . THE idea that Cactuses were seldom seen in English gardens, because so little was known about their cultivation and management, suggested to the Publisher of this book that a series of chapters on the best kinds, and how to grow them suc- cessfully, would be useful. These chapters were written for and published in The Bazaar, in 1885 and following years. Some alterations and addi- tions have been made, and the whole is now offered as a thoroughly practical and descriptive work on the subject. The descriptions are as simple and complete as they could be made; the names here used are those adopted at Kew; and the cultural directions are as full and detailed as is necessary. No species or variety is omitted which is known to be in cultivation, or of sufficient interest to be introduced. The many excellent figures of Cactuses in the Botanical Magazine (Bot. Mag.) are referred to under each species described, except in those cases where a complete figure is given in this book. My claims to be heard as a teacher in this department are based on an experience of ten years in the care and cultivation of the large collection of Cactuses at Kew. Whatever the shortcomings of my share of the work may be, I feel certain that the numerous and excellent illustrations which the Publisher has obtained for this book cannot fail to render it attractive, and, let us also hope, contribute something towards bringing Cactuses into favour with horticulturists, professional as well as amateur. W. WATSON. C O N T E N T S . PAGE Introduction . . . . . . . . . . 1 Botanical Characters . . . . . . . . 4 Cultivation . . . . . . . . . . . 11 Propagation . . . . . . . . . . . 28 Epiphyllum, The Genus . . . . . . . . 38 Phyllocactus, „ . . . . . . . . 44 Cereus, „ . . . . . . . . 57 Echinocactus, „ . . . . . . . . 88 Echinopsis, „ . . . . . . . . 128 Melocactus, „ . . . . . . . . 137 Pilocereus, „ . . . . . . . . 143 Mamillaria, „ . . . . . . . . 148 Leuchtenbergia, „ . . . . . . . . 184 Pelecyphora, „ . . . . . . . . 188 Opuntia, „ . . . . . . . . 191 Pereskia, „ . . . . . . . . 219 Rhipsalis, „ . . . . . . . . 225 Temperatures . . . . . . . . . . 234 Dealers In Cactuses . . . . . . . . . 237 Index . . . . . . . . . . . . . 239