Ornamental Gardening 



varieties of roses. It 

 may be held in check 

 by dusting the leaves 

 with powdered sulfur. 

 The sulfur sticks better 

 if it is put on when the 

 leaves are wet with 

 dew. 



The older stems of the 

 rose bush are often seen 

 to be covered with a 

 soft, white substance 

 that looks somewhat like 

 mildew (Fig. 123). The 

 appearance is caused by 

 a multitude of very small 

 scale insects which suck 

 the juice from the stem. 

 They may be killed with 

 a wash or spray made of 

 washing powder dissolved in water one pound to 

 five gallons. . 



Another rose pest is plant lice. These insects work 

 on the soft growing tips of the stems. Like the scale 

 insects, they suck plant juices, but they crawl about, 

 while the scale insects (at least the wingless females) are 

 fixed permanently to the bark. The simplest way to 

 control plant lice is to spray them off the bushes with 

 a garden hose. 



A water garden. Pond lilies add a touch of distinction 

 to a garden, and on a small scale one may have a lily 



Sulfur 



for 



mildew 



Spraying 

 for rose 

 scale 



FIG. 123. Rose scale. The female scale 

 insects attach themselves permanently to 

 the plant. These and the young suck the 

 plant juices. The adult males do not 

 feed, having no mouth parts; they have 

 one pair of wings. 



Plant lice 

 (aphids) 



How to 

 make a 

 pond 



