THE ROSE GARDEN 



69 



There are several Rose slugs. In each case they are worms which 

 skeletonize the leaves and even attack the plant when the leaves first 

 unfold. Arsenate of lead (one pound arsenate of lead to twenty -five 

 gallons of water) is effective, but even water will check them if appUed 

 with force. Hellebore is good dusted on the leaves; it should first be 

 diluted to half its weight with flour or plaster. 



The leaf hoppers can be controlled by spraying with tobacco ex- 

 tract on under side of leaves. The Rose leaf roller can be controlled 

 with arsenate of lead. There is also the Rose scale, which can easily 

 be washed from the canes with corrosive subh- 

 mate or on a large scale sprayed with lime 

 sulphur, or the canes burned. 



The Rose beetle is especially prevalent on 

 sandy soils. It appears in early Summer, feeding 

 on leaves and flowers. Hand picking is really 

 necessary. They should be dropped into kero- 

 sene. The larvae feed on roots of Rose plants. 

 Some persons have lessened the injury from Rose 

 bugs by allowing chickens to have the run of the 

 Rose beds for several hours a day in May, when 

 the larvae are coming out of the ground. 



Rose Diseases 



Mildew causes a powdery effect upon leaves. 

 It is especially prevalent upon the Crimson 

 Ramblers and Moss Roses. It appears when 

 the nights are cool and days are hot and sultry, 

 and disfigm-es the plant, but does not affect the 

 next year's crop of flowers. Powdered Sulphur upon the leaves is 

 used as a control. 



Rlack Spot is the most serious disease of the American Reauty 

 and other Hybrid Perpetuals*. It is confined to the foliage and appears 

 in Midsummer. It iooks like a black or purple spot one-quarter inch 

 in diameter; the blotches more evident on the upper surface. When 

 the patches are examined they will be found to have a fine mycehum 

 growing on them which causes premature defoliation. The leaves 

 should always be removed if possible. Spray with Rordeaux mixture 

 (3-5 -50), or other copper fungicides. 



Leaf-scroch, when severe, causes the infected areas of the leaf 

 to drop out. The canes are also attacked. The wild Roses, too, are in- 

 fested. The best control is to use copper fungicides. 



Rose Rust is especially prevalent on hardy varieties. It has 

 Summer spores and Winter spores and attacks canes as well as leaves. 



Screen for the side or 

 back of a house. 



Grape vines may be 

 used, but they must 

 be kept free of insects 

 ^nd other "crawly 

 things." Ampf^lopsis, 

 Clematis or Wichura- 

 iana Roses also can be 

 recommended 



