70 HARDY PERENNIALS 
and cannot be reached by any spray that will not 
injure the tissues of the plant. The proper thing 
to do is to spray early in the season with Bordeaux 
Mixture, thus preventing the development of the 
spores of the fungus. Carnations are subject to 
a disease which produces purplish blotches on the 
leaves. Violets are sometimes attacked by smut, 
Paeonies contract leaf-spot disease, and Delphiniums 
are subject to mildew. 
In practically all cases of rust or fungus on leaves 
and stems the safest and most effective remedy 
is a spray made by boiling a pound of Sulphide of 
Potassium in three pints of water. Use an enamelled 
pan, and after boiling add the whites of two eggs. 
The solution may be kept in a stone jar or strong 
bottle closely corked. Two ounces of this solution 
to a gallon of rain-water makes a useful fungicide. 
Be careful not to allow the spray to reach white 
painted woodwork as it stains this badly. 
It needs scarcely be remarked that diseased 
leaves and stems should never be allowed to remain 
in the beds and borders to spread the disease, but 
should be carefully removed and burned. 
