U of M Gardening Information: What's wrong with my plant?

Kentucky coffeetree > Leaves > Leaves small and discolored yellow to brown

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Credit: Edward L. Barnard, Florida Dept. of Agriculture and Consumer Services, Bugwood.org
Credit: Edward L. Barnard, Florida Dept. of Agriculture and Consumer Services, Bugwood.org
Credit: M. Grabowski, University of Minnesota
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Leaves are smaller in size and turn yellow earlier than normal
Canopy appears thin with few leaves and multiple dead branches
Fungal conks, semicircle shelf fungi, can be found singly or in clusters from the base of the tree up to 3 feet high on the trunk
Conks are reddish brown and shiny on top, white and porous underneath, a rim of white may be visible on the edge of growing conks
Infected wood at the base of the tree is white, soft, stringy or spongy
Infected trees frequently break or fall over in storms
Most frequent on stressed trees and/or those with mechanical wounds
More information on Ganoderma butt rot...

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Leaves are small and yellow in chronic infections
Leaves turn brown from the edges and tips, wilt and die in severe infections
Leaf symptoms are often seen on only one or a few random branches in the canopy
Dark streaks often can be seen in the sapwood if the bark is peeled back, appearing as rings or arcs in a cross cut
Symptoms may develop over a single growing season, or over several years
More information on Verticillium wilt...