THE ROSE GARDEN 



57 



The Rose curculio, a snout beetle, is found 

 often on wild Roses, also on Rosa rugosa, on 

 the unfolding bud. They should be hand picked. 

 They drill into the bud and are found late in the 

 day or early in the morning. 



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 disfigures the plant, but does 

 not affect the next year's crop of flowers. Sulphur 

 powdered, upon the leaves is a suggested control. 



Rlack Spot is the most serious disease, and 

 is especially bad on the American Reauty and 

 other hybrid perpetuals. It is confined to the 

 foliage and appestrs in Midsummer. It looks like 

 a black or purple spot one-quarter inch in dia- 

 meter; the blotches more evident on the upper 

 surface. When the patches are examined they will be found to have 

 a fine myceUmn growing on them which causes premature defoUation. 

 The leaves should always be removed if possible. Spray with Ror- 

 deaux mixture (3-5-50), or other copper fungicides; potassium sulphide 

 does not seem as good. 



Leaf Scorch, 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. 

 The best preventive is the removal and burning of all rusted canes. 

 A spray with some copper solution to protect and prevent is all that 

 can be advised. 



Rose Canker appears as a warty growth on the canes; excrescences 

 on wood. It can only be cut out when found. It is caused by a fungus. 



Screen for the side 

 or back of a house. 

 Grape vines may be 

 used, but they must 

 be Icept free of insects 

 and other "crawly 

 things." Ampelopsis, 

 Clematis or Wichur- 

 aiana Roses also can 

 be recommended 



