342 
Garden Work 
person with a small garden, or even by gardeners with 
the charge of larger gardens, so that they may detect a 
bad disease at once, and check it before it has time to 
spread to any considerable extent. 
It attacks the young leaves and buds, which are 
gradually covered with the delicate hyphae of the disease. 
These penetrate into their tissue, devouring the cell con- 
tents, destroying the cells and the apex of the shoots. 
It also spreads to the young fruit and gradually destroys 
it. When the disease has made some growth it pro- 
duces enormous numbers of small white spores or conidia; 
these may be blown about by the wind, or carried by 
insects or birds to healthy branches or bushes, and under 
favourable conditions will germinate and produce other 
centres of the disease. When the bushes are badly at- 
tacked, the shoots are deformed at the apex, and the 
leaves shrivel up and die. 
If there is only a slight attack, the tips of the shoots 
may be cut off and burned, the bushes being afterwards 
sprayed with potassium sulphide. The following season 
the bushes should all be sprayed just before the buds 
expand, and again, once a fortnight, until they are quite 
free from the appearance of the disease. 
ROSE MILDEW 
This disease is only too well known by the damage it 
does to the Rose bushes in many gardens. But when 
once it is thoroughly understood its attacks may be con- 
siderably checked. It attains its greatest luxuriance in 
warm, damp seasons, therefore in such seasons special 
