Karen Rane, Sr. Plant Disease Diagnostician, Dept. of Botany & Plant Pathology, Purdue Univ.
The blighted areas on these horsechestnut leaves are symptoms of the common fungal disease called Guign READ MORE http://www.ppdl.purdue.edu/ppdl/weeklypics/9-11-06.html
Horse chestnut leaf blotch is an unsightly, but not seriously damaging, disease of white- and red-flowered horse chestnuts. It causes irregular brown blotches on leaves.
What is horse chestnut leaf READ MORE http://apps.rhs.org.uk/advicesearch/Profile.aspx...
ntroduction
Leaf blotch of horse chestnut is caused by the fungus Guignardia aesculi. This is a common disease which causes browning of the leaves especially during years with wet springs. It is us READ MORE http://umaine.edu/ipm/ipddl/publications/5094e/
Nancy Pataky
Horsechestnuts are not used widely in the landscape, but we do see this disease fairly frequently. It may be known as horsechestnut leaf blotch or Guignardia leaf blotch, named for the READ MORE http://hyg.ipm.illinois.edu/pastpest/200110g.html
Introduction
Leaf blotch of horse chestnut is caused by the fungus Guignardia aesculi. This is a common disease which causes browning of the leaves especially during years with wet springs. It is u READ MORE http://pmo.umext.maine.edu/factsht/Chestnut.htm