264. VINES 
ten gallons of water, is better, to my mind, 
because, if the day is windy, the sulphur is blown 
from the foliage. Spraying with a solution of 
copper will also control the mildew. 
Black spot is a fungous disease. As the name 
suggests the leaves have little black spots on 
them, which, if left untreated, get larger; then 
the leaves fall. For the most part it is confined 
to roses grown under glass, but I have seen 
climbing roses affected. It is due to a bad loca- 
tion. The best remedy is to pick off the affected 
leaves, burn them, and then give the plants a good 
spraying with acopper solution. This must be done 
early in the morning, before the sun strikes the 
plants. The leaf blight, another fungous disease, is 
more common on outside roses, and can be deter- 
mined by the generally unhealthy appearance of 
the foliage which becomes spotted and flecked with 
a grayish colour. The best remedy for this is a cop- 
per solution. Very few diseases, however, appear 
on roses that are growing under ideal conditions. 
ROSES FOR FIVE MONTHS 
In recent years, the introduction of many 
hybrid climbing roses has served to direct atten- 
tion toward their possibilities when grown upon 
pillars, and especially on verandas. Some of 
