392 



JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



Maximmn Minimum 



Date 



Centigrade 



Fahrenlieit 



Centigrade 



Fahrenheit 



Oct. 13 



18°-5 



(65°-3) 



-0°-5 



(31°-1) 



„ 14 



18° 



(64°-4) 



-2° 



(28°'4) 



„ 15 



Id"" 



(66°-2) 



-2° 



(28°-4) 



16 



10° 



(50°) 



-4° 



(24°-8) 



17 



5° 



(41°) 





(30°-2) 



„ 18 



9° 



(48°'2) 



-l°-5 



(29°'3) 



„ 19 



12° 



(53°-6) 



-2° 



(28°-4) 



„ 20 



13° 



(55°-4) 



-3° 



(26°-6) 



„ 21 



15° 



(59°) 



-2° 



(28°-4) 



„ 22 



17° 



(62°-6) 



-l°-5 



(29°-3) 



„ 23 



17° 



(62°'6) 



0° 



(32°) 



„ 24 



20° 



(68°) 



+ 5° 



(41°) 



From the 17tih the rise of the maximum and the fall of the minimum 

 is very curious. " 



. Asters in Dry Weather. 



The season of 1911 will long be remembered for its great heat and 

 drought, and the consequent effect on plant life. On the hot light soil 

 at Wisley, keeping the hoe continually working did more good than 

 all the watering and mulching by reducing evaporation from the soil, 

 and most plants, including vegetables, did well. But although all the 

 collection of Asters (Michaelmas Daisies) grew strongly and freely until 

 the flower buds formed, mildew attacked the majority of the plants, 

 some worse than others. Most of those varieties marked "bad " in 

 the following list opened a large proportion of their flowers, but they 

 were smaller than usual, and those marked ^'^ very bad " in the majority 

 of instances were quite a failure so far as flowering goes. Those merely 

 named were but slightly attacked. The varieties in the collection not 

 named at all were free from mildew. 



The collection of aslers is a very large one and contains all the best 

 varieties. A practically complete list of varieties grown will be found 

 in our Journal, vol. xxxiii., p. 184. 



None of the pink or reddish flowered varieties such as ' Lil Far- j 

 dell " were touched by mildew, though side by side with diseased 

 plants. 



' Albion, ' very bad ; ' Antigone, ' very bad ; * Apollo, ' bad ; * Argus ' ; 

 * Ariadne,' very bad; * Berenice,' very bad; 'caniis/ very bad; ' Capti- 

 vation ' ; ' Catulus ' ; * Ceres ' ; ' Collerette blanche ' ; ' cordifolius 

 giganteus '; ' Daisy Peters,' very bad; * D. B. Crane '; ' decorus '; 

 ' densus,' bad; ' dumosus,' bad; * Elsie Perry '; ' eminens,' very bad; 

 [ formosissimus/ very bad; ' Gloriosa ' ; * Harpur Crewe,' very bad; 

 ' Horace,' bad; ' Irene '; ' Janus '; * Keston Blue '; ' lilacinus,' very 

 bad; ' litoreus/ bad; 'Maud'; * Mavourneen, ' bad; 'Miss Parish'; 

 'Mrs. Alec Anderson,' bad; 'Mrs. Twinan,' bad; 'Mrs. Wheeler 

 Bennett,' slightly; ' Moonstone '; ' Nancy '; ' paniculatus laxus,' very 

 bad; 'Photograph'; 'Pink Daisy,' very bad; 'Porcelain,' slightly; 



