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Content tagged with "thousand cankers disease"

black-walnut-bark

Black Walnut Bark

Black walnut bark is rough, and when the surface is lightly scraped shows a chocolate brown color.

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black-walnut-catkins

Black Walnut Catkins

Male flowers appear in drooping catkins when leaves emerge in spring.

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black-walnut-twig-cross-section

Black Walnut Twig Cross Section

Twigs thick, light brown, with fuzzy buds and tan, chambered pith at the core of the twig.

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Photo shows walnut tree with browning leaves

Browning Leaves Indicate TCD

In midsummer, TCD-infected trees may show wilted brown leaves on branches high in the canopy.

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Photo shows declining black walnut tree

Declining Black Walnut Tree

Black walnut trees in Missouri can display die-back for many other reasons besides TCD.

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Photo of a vial of walnut twig beetles.

Don't Accidentally Spread TCD

Photo of a vial of walnut twig beetles.

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Photo of firewood

Don't Move Firewood!

Many tree-killing pests travel in firewood. If you love Missouri’s forests, buy firewood where you camp, and burn it all before you leave.

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Although TCD has not been detected in Missouri, we can estimate its potential economic impact. This four-page bulletin overviews the losses.

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Photo of scientist using a drawknife to expose thousand cankers disease

Exposing Thousand Cankers Disease

Lightly scraping away the bark exposes TCD cankers underneath.

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