infected geranium

Herndon, VA(Zone 6b)

What is causing the weird white spots on the leaves?

Thumbnail by mattskiva
Stamford, CT(Zone 6b)

I've seen other designs on columbine leaves. Check out leaf miners.

Sinks Grove, WV

This does not look at all like typical leaf miner damage. It more likely is a bacterial or fungal disease.

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