PYRETHRUMS AT WISLEY, 1915. 



265 



PYRETHRUMS AT WISLEY, 1915. 



Report by C. C. Titchmarsh, Trials Officer. 



Only three growers responded to the invitation to send. Pyrethrnms 

 for trial. 



The majority of the stocks arrived at Wisley during February 

 and March 1913, and were planted in the Trial Beds near the Her- 

 baceous Border. Notwithstanding every attention to cultural details, 

 the plants made but little progress and were not in a proper condition 

 to be judged in 1914. 



Together with a few fresh arrivals, the plants were moved to 

 the strongest soil in the gardens — -the beds near the Rose Arch — 

 where they improved considerably, although the display at flowering 

 time was somewhat disappointing. It may be concluded that the 

 Pyrethrum is not a plant suitable for growing on a light, warm soil, 

 such as that of Wisley. It is not to be inferred that the results of 

 the trial as reported are of little value, but rather the contrary, that 

 those which have best withstood this rigorous test are the best in 

 their several sections. The cultivation of the plants was under the 

 care of Mr. J. Blakey, Assistant Superintendent. 



The garden Pyrethrum is derived from Chrysanthemum coccineum, 

 Beib. taur. cunc. 2, 324 (Pyrethrum roseum), figured in Bot. Reg. t. 1024. 



The Sub-Committee selected the following varieties as the best in 

 the trial : — 



Group I. — Flowers Single. 



a. Flowers White. 



Queen of the Whites. 



Snow White. 



c. Flowers Pink. 



Roseum. 



Record. 



d. Flowers Deep Pink. 



Punch. 



Eglantine 



/. Flowers Deep Rose. 



Firefly. 



g. Flowers Crimson. 



General Gaselee. 



Langport Scarlet. 



Group II. — Flowers Double. 



Aphrodite. 



a. Flowers White. 



Samranburgh. 



