Vine Clinic: What’s the problem?

A few leaves on my Aglianico back-up vines look a little weird.

I am not worried about them. But I wanted to put it to readers: should I be? What are the changes in the photos below?

In medicine, we call this a “differential diagnosis”: a list of possible causes of a symptom or phenomenon. As one grows wine grapes, it’s good to keep an eye on what’s happening with the plants and to know what could cause some changes or unusual appearance of the plant.

It may be fun to test our common knowledge….

Spots. What are they? Why are they on the leaf?

Spots. What are they? Why are they on the leaf?

Ruffling and curling. What could cause it?

Ruffling and curling. What could cause it?

It's obvious something has been chewing on this leaf. But what?

It's obvious something has been chewing on this leaf. But what?

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About SUAMW

Father, husband, physician, amateur guitarist, wine lover, wine writer, wine grower and wine maker trying to do it all within eye shot of downtown Los Angeles. http://www.shutupandmakewine.com http://twitter.com/Dr_Arthur_P
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