| Below I share 11 photographs showing common plant diseases and insect pests photographed by me in Seattle. An entire article could be devoted to each, but I am far too busy to do so. Other photos could show damage from insufficient water; frost damage; herbicide damage; and plants in need of fertilizer, or trees suffering from delayed graft-incompatibility. Perhaps I can get around to those in the future. |
A Begonia infected with powdery mildew ; photo by ALJ
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Japanese Maple dying from verticillium wilt ; photo by ALJ
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Peach leaf curl disease on a Nectarine tree ; photo by ALJ
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Pear-leaf Rust damage on a Pear tree ; photo by ALJ
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Rust damage on a Serviceberry tree ; photo by ALJ
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Ganoderma fungal conk on a oak tree ; photo by ALJ
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pathogenic Honey Mushrooms (Armillaria) in fall ; photo by ALJ
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Bronze Birch Borer killing tops of Birch trees ; photo by ALJ
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Leaf Blister Mite damage on a Pear tree ; photo by ALJ
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Scale insects on a leaf underside ; photo by ALJ
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Cherry Bark Tortrix frass at base of a Mountain Ash trunk ; photo by ALJ
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