Hazelnut Trees
Q.

Hazelnut tree (Barcelona) –

Zone Weed, CA 96094 | renees910 added on June 22, 2017 | Answered

Why are the leaves curling up? Not discolored. No obvious signs of pests or mold. The other compatible hazelnut tree is not curling like that. (I forget the name of the other tree's variety)

A.
A.Answers to this queston: Add Answer
Downtoearthdigs
Certified GKH Gardening Expert
Answered on June 26, 2017

Curling leaves can indicate a pest or disease issue.
These articles will help you pinpoint the issue.

http://www.omafra.gov.on.ca/english/crops/facts/12-009.htm
https://www.gardeningknowhow.com/edible/nut-trees/hazelnut/grow-hazelnut-trees.htm
You may also want to check with your County Extension Office for issues specific to your region.
https://www.gardeningknowhow.com/extension-search/

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