Thursday, 17 December 2015 16:42

How is the Walnut Twig Beetle Impacting Black Walnut

If you are familiar with Walnut you no doubt have heard of the Walnut Twig Beetle.  The United States Department of Agriculture has records of the Walnut Twig Beetle from as far back as the 1920’s.  It originally surfaced on the west coast and over time has been migrating East.

The Walnut Twig Beetle is known to bore into walnut trees, (Juglans nigra), and leave a fungus under the bark that creates a dead area, or canker, in the tree eliminating its ability to transport nutrients.  This results in the tree being infected with the Thousand Cankers Disease. This disease now threatens millions of black walnut trees in the forests across North America causing several States to establish movement quarantines in an attempt to prevent the further spread of this disease.

The quarantines primarily pertain to non-processed timber such as firewood, logs and green lumber.  Walnut that is processed such as 100% bark-free, kiln-dried with squared edges or is transformed into a finished wood product like furniture and flooring is not impacted by the quarantine.  However, each State has its own quarantine regulation so it is wise to research what this specifically means to your region.

Hardwood lumber manufacturers have been dealing with the Thousand Cankers Disease for some time now.   The largest impact it has had is where kiln dried lumber can be manufactured and which green suppliers can be used.  In general, the supply of kiln dried Walnut on the market has been steady but this could change if the situation worsens. 

black walnut logsWalnut log sales have also continued with little impact as long as loads have the proper phytosanitary certification requried.

Baillie Lumber is very familiar with the requirements to supply customers with the Walnut products they require.  If you have questions relating to Walnut, the Twig Beetle or the Thousand Canker Disease contact us today to discuss how you might best be served.

Tony Cimorelli
Baillie Lumber Co.
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