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4-H Forestry Judging Tree Diseases
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artist conk
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annosum root rot Similar to artist conk At base of conifer trees
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beech bark scale
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black knot
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brown spot needle blight
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cedar apple rust On cedar limbs and apple leaves
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dogwood anthracnose Only on dogwood leaves
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Dutch elm disease Fan shaped galleries
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dwarf mistletoe
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fusiform rust
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hypoxylyn canker Gray patches on bark
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lichen
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nectria canker Bullseye shape swelling
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needle cast
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oak wilt Brown transparent oak leaves
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red heart of pine
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white pine blister rust
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chaga mushroom Like a large black knot
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