Question From: Mesa, Arizona, United States
Q: What is causing these brown spots on hibiscus and neighboring snail Vine and potato vine
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A: I can't make a positive ID. Could be a disease or a sucking type insect. The fact that the damage seems to be random and not affect all the leaves leads me to believe it's an insect. If it does not spread, the insect may have morphed into a non-feeding mode. Also diseases are usually plant specific . Take samples of the infected leaves to and independent garden center or nursery for a more positive ID. Best And Happy Yardening, Nancy
