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   Ornamentals
 more...>Disease Image Gallery>Ornamentals>
Diseases of Ferns
Virus-affected Japanese holly fern

A new virus was recently described from nursery and landscape plantings of both Japanese holly and leatherleaf ferns.

Diseases of Oaks
Powdery mildew symptoms on upper surface of oak leaves.

Oaks, a dominant member of the landscape, are subject to a number of diseases.