CULTIVATION 



the far north it would be well to bend down the canes 

 and protect them with the usual blanket of earth 

 and waterproof building paper. 



RECIPES FOR THE DISEASES OF ROSES 



Below are extracts from the best-known authori- 

 ties, giving their recipes for mildew, black spot, 

 rust, etc. 



"The Rose Book" (Page 211). H. H. Thomas suggests using a 

 mixture, for mildew, of equal parts of fine quicklime and sulphur 

 dusted on the affected areas. 



"Roses, Their History, Development, and Culture" (Page 

 303) . Pemberton advocates the same dusting and also gives the 

 following: 1 lb. flowers of sulphur, 1 lb. powdered quicklime. 

 Add sufficient water to form a paste. Add one gallon of cold 

 water. Boil for twenty minutes and when cool pour off the 

 liquid and spray at the rate of half a pint of the above mixture 

 to six gallons of water. 



(Page 303). Pemberton recommends 1>£ lbs. of Calvert's 

 carbolic soft soap in 7^2 quarts of water — a pailful; spray with 

 one part of mixture to three parts of soft water, and he adds, 

 "this is the remedy we apply." 



"Roses and Rose Growing" (The Macmillan Co.), (Pages 137- 

 138). Miss Kingsley advocates flowers of sulphur for mildew, 

 distributed by a pair of powder bellows, and suggests applying 

 before mildew appears. She uses Quassia Chips for Aphis, and 

 recommends picking by hand for caterpillars. 



"The Rose" (Page 89). Ellwanger's recipe for mildew is sulphur 

 and soot, applied while the dew is on the plants so that it will 

 adhere. 



"Roses" (Page 52). The Garden Library of Doubleday, Page & 

 Company suggests for black spot carbonate of copper com- 

 pound, using five ounces of copper compound to three quarts 

 of ammonia and sixty gallons of water. The spraying should 

 be done once a week, using a hose with a nozzle that gives a 

 fine spray. 



"Pictorial Practical Rose Growing" (Pages 80-84). Wright 

 does not mention black spot, but the reference made to orange 

 fungus or red rust is that it develops into black rust, possibly 

 the same as the well-known black spot. This article is so clear 

 that it is quoted verbatim. 



"When the experienced rose grower observes orange-yellow 

 spots on the leaves of his plants in early summer, he knows that 

 187 



