Growing strawberries in the home garden, Disease, Leaf scorch
Source: University of Minnesota Ext.
Photo Source: Unsplash,
Leaf scorch
In addition to leaves, leaf scorch (Diplocarpon earlianum) can infect petioles, runners, fruit stalks and berry caps.
If unchecked, plants can be significantly weakened reducing the growth of all plant parts.
Severely infected plants are weakened and can die from other stresses such as drought or extreme temperatures.
The leaf scorch fungus overwinters on infected leaves and leaf debris within the patch.
The fungus can remain dormant for long periods in dry leaves, but it produces spores quickly in the presence of moisture.
Spores are spread by wind or by splashing water. Spores will germinate and new leaf spots will form if leaves remain wet for 12 hours or longer.
Once mature, leaf spots will produce spores throughout the growing season in response to wet conditions. These spores are spread mainly by splashing water.
Hot dry weather halts disease progress.
Severe infection in summer and fall can mean fewer strawberries the following year.
Infections on fruit and flower stalks can girdle the stalk and kill the fruit and flower.
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