Question of the Week – Large Leaf Spot

This week, the question was: What is wrong with this chestnut leaf?

This leaf is showing symptoms of a fungal disease called large leaf spot (Monochaetia sp.) that affects oaks and chestnuts. The appropriately named spots may reach 2 inches wide and stretch across the entire leaf, killing large amounts of tissue. This disease is uncommon in South Carolina but has been documented to slow tree growth and reduce the size of annual growth rings. For more information, see this publication.

This week’s question is from Upstate Extension Agent Andy Rollins.

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