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Category: Pests & Disease

Q: The peeling of my grapefruit on my citrus tree is brown and it feels like sand paper. They are ripe and mature but what is wrong with them?

melanose

A: The disease is probably melanose, which is a common coastal fungal disease that primarily occurs in grapefruit but can attack any citrus. The first symptoms on leaves are small, circular, dark depressions with a yellow margin, similar… Read More

  Q:  What is wrong with my citrus tree?  I see little white flies whenever I get near the fruit or leaves.  I turned some of the leaves over and saw these orange specks.  Is this an insect or a disease?

Whitefly fungi

A:   Actually the orange spots you see are neither an insect nor a disease. The spots are beneficial fungi which attack the young stationary stage (pupae) of a common citrus pest called the white fly. The white fly… Read More