What causes this? I am sure it is some sort of deficiency but what kind? I fertilize this one heavily with pond plant tabs. It is in a large bowl and the water is very hot already.
Spotty leaves on lotus
Mine are like that too this year...I'm wondering if it's the "hotter than normal" temps we're having. Mine are in enough fertilized muck to make them normally, very happy. No bugs on the underside, but they're also still blooming.