Vespula pennsylvanica / maculiforna / germanica / vulgaris / squamosa and DolichovespulaThe dog days of summer…fresh water melon, ice cream, p
06.06.2023 - 16:05 / gardenerspath.com / Helga George
How to Identify, Control, and Treat Eastern Filbert Blight Anisogramma anomalaHazelnuts have been considered divine for ages. We can trace this history back to their mention in a 2838 BC Chinese manuscript as a sacred nourishment bestowed by God.
Currently, commercial groves of these tasty nuts are under siege from an aggressive fungal disease commonly known as Eastern filbert blight.
In case you aren’t already familiar, filbert is an older name for the hazelnut that is still commonly used in the Northwest.
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The fungus that causes this blight, Anisogramma anomala, is considered the worst pathogen to plague hazelnut orchards. If it’s not controlled, it rapidly spreads from tree to tree, and orchard to orchard.
There is no cure for this disease, and it can kill all parts of the tree except the roots.
In addition, the disease has a 12- to 15-month lag time before symptoms manifest.
Read on to learn how to protect your hazelnuts from a potential onslaught.
West Coast and East Coast HazelnutsThere are three different species of hazelnut commonly grown in the US: native American species, Corylus americana, the filbert C. maxima, and the European species, C. avellana.
This includes the ornamental cultivar C. avellana ‘Contorta,’ commonly known as the contorted filbert or Harry Lauder’s walking stick, named after the Scottish entertainer.
High-end hazelnuts of the European variety typically fetch the highest prices, and these are often grown commercially in the Pacific Northwest. These trees don’t tolerate cold as well as the American species.
So, why grow them?
The nuts that they produce are larger and generally considered
Vespula pennsylvanica / maculiforna / germanica / vulgaris / squamosa and DolichovespulaThe dog days of summer…fresh water melon, ice cream, p
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