Blackweb

Blackweb was a fungal disease affecting grapes.

Effects
It occurred on grape vines grown in a cold, damp environment, resulting in a powdery mildew. The grapes were bitter and stunted as a result.

History
The grape vines grown in Maskyr's Eye in the Vast in the mid–14 century DR were often afflicted with blackweb, owing to the climate. Despite this, they were used for the local sour wine known as sund.