Extension > Garden > Diagnose a problem > What's wrong with my plant? > Deciduous Trees > Prunus > Leaves wilting
Prunus > Leaves > Leaves wilting
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Black knot
Apiosporina morbosa
- Gall formation may cause leaves to wilt or not leaf out showing branch dieback
- Lumpy olive to black elongate swellings along all sizes of twigs
and branches - Rough black cracked swelling can occur on the main trunk
- Most common on choke and pin cherry
- More information on Black knot
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Leaf curl
Taphrina wiesneri
- Diseased leaves droop, turn brown and die as the disease progresses
- Witches brooms, clusters of small twigs arising from a swollen area of the branch, form on some infected trees
- Leaves have thick puckered to curled spots that are yellow to reddish brown
- Common on wild cherry trees
- More information on Leaf curl
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Brown rot
Monilinia fructicola
- Sudden browning of blossoms or wilting of leaves
- Sunken, darkened areas on twigs from which gums are exuded, also known as gummosis
- Part or all of the ripening fruit develop a soft brown rot, then become shriveled and dusted with powdery tufts of tan to gray spores
- Rotten fruit may remain attached to the tree or fall to the ground
- More information on Brown rot
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Verticillium Wilt
Verticillium dahliae
- Leaves turn brown from the edges and tips, then wilt and die in severe infections
- Leaf symptoms are often seen on only one or a few random branches in the canopy
- Leaves are small and yellowed in chronic infections
- Dark streaks 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
