STRAWBERRY DISEASES 429 
Frost-Inyury 
Caused by the action of low temperatures 
Spring frosts often do damage to strawberry plants. Those 
varieties in which the seeds are most exposed suffer most. 
Plants severely affected with leaf-spot have been observed to 
be more injured in the winter than those plants free from this 
disease. Mulching is practiced as a measure against winter- 
injury, while simply covering the plants with straw or blankets 
is practiced as a protection measure against spring frosts. 
(Fuller discussion of frost-injurv given under Apple, page 35.) 
