Images
Grape leaves showing symptoms of iron chlorosis. Grape leaves showing symptoms of iron chlorosis. Major leaf veins remain green while intervienal tissue and smaller veins become chlorotic. Tissues may eventually experience marginal scorching.
Maple leaf with iron chlorosis. Maple leaf with iron chlorosis. Some plants will have necrotic interveinal lesions, much like those illustrated in this image.
Appearance of leaves affected by triazine and iron chlorosis. This image shows the similar appearance of leaves affected by triazine and iron chlorosis. Triazine damage normally produces interveinal chlorosis while the marginal veins remain green. Iron chlorosis will only have major veins that remain green. A knowledge of the planting area is a good indicator as to which of these maladies your trees are experiencing. Triazine is a soil sterilant and is commonly placed under hard surfaces such as sidewalks and driveways. If the plant is near a hard surface, triazine may be the cause. Soil tests can confirm iron content in the planting soil.
Hawthorn tree affected by iron chlorosis. Hawthorn tree affected by iron chlorosis. Many times only a portion of a plant such as a branch may be affected while the remainder of the plant looks healthy.