77'2 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



Chrysanthemums, Classification of {Jour. Soc. Nat. Hort. Fr. 



ser. iv. vol. xi. p. 128; Feb. 1910). — The already classified lists of 

 chrysanthemums have just been revised in France by a strong, com- 

 mittee. The best varieties for each group have been carefully selected, 

 and each variety is described by colour as well as by name for the 

 guidance of amateurs. The grouping is according to the ease of growth, 

 time of flowering, methods of growth, colour, etc. 



Chrysanthemums Grown in Baskets. By Gaston Clement (Rev. 

 Hort., Jan. 1, 1910, p. 8-9; 1 illus.). — The illustration shows a very 

 charming effect produced by growing a single plant in a handled basket, 

 over and around which the branches were trained, entirely covering the 

 basket and handle with flowers and foliage. — C. T. D. 



Chrysanthemums, New. By Max Gamier (Rev. Hort., Jan. 1, 

 1910, pp. 21 and 22). By Gaston Clement (Jan. 16, 1910, pp. 35-36; 

 1 illus.; and Feb. 1, 1910, pp. 61-63). — Two descriptive hsts of new 

 French introductions or eligible varieties. — C. T. D. 



Chrysanthemums, New and Old. By K. F. Miinster (Oesier. 

 Gart. Zeit. vol. v. pt. i. pp. 19-20). — Gives lists of varieties deemed 

 worthy of cultivation. — S. E. W . 



Chrysanthemums, Rot in (Jour. Soc. Nat. Hort. Fr. ser. iv. 

 vol. xi. p. 52 ; Jan. 1910). — The means generally employed to produce 

 the enormous blooms required of show chrysanthemums also tends 

 to cause rot, which appears in two parts of the flower — the heart or 

 receptacle, and the petals. These represent two different forms of rot, 

 which must be differently treated ; but both are produced by an excess 

 of manure, and especially of nitrogenous manure. 



This article gives the results of experiments which tended 

 to show that the chrysanthemum has not that predilection for 

 nitrogenous manure with which it is generally credited, and that, on 

 the other hand, it requires much more lime and potash than it generally 

 receives. The amount of phosphoric acid generally given to the plant 

 is also probably excessive, though, as a matter of fact, it will only 

 assimilate as much of this as it really requires. In order to produce 

 the largest possible blooms without danger of rot the compost used 

 must be rich in lime and potash, and should be prepared a year or two 

 before it is wanted. If at the flowering season additional nourishment 

 is to be given in order to increase the length of the petals, the plant 

 should already be firm and rigid, and should have at its disposal enough 

 potash for the formation of the receptacle and of lime to ensure firm- 

 ness of tissue to the petals. Waterings with nitrate of ammonia should 

 only be given out of doors, and only when the bud is quite formed and 

 the petals ready to expand. In soils which are poor in lime it is 

 advised to add 10 to 12 kilogrammes of lime to a cubic metre of the 

 compost, and in order to help the nitrification of the mass about one 

 kilogranuue of flowers of sulphur to a cubic metre should also be added. 



