I have several newer plants and this is the first time I have seen this. I use
https://www.amazon.com/BANANA-FERTIL.../dp/B01CQPMQ30
every couple of weeks with my plants. All seem very healthy so far except this Zebrina. It has been my slowest growing plant and then this popped up. Any ideas?
Also you can ignore the leaf with the holes below it. We had a caterpillar problem
Thanks in advance
https://i.postimg.cc/sDctBsjM/Image-from-i-OS.jpg