Strangelove8

Hello everyone. I have a problem with my farms. When I first started my city the farms grew easily, but lately I destroyed most of them because they were ugly Pedriana Plants and now they won't grow back. My city is mostly high wealth residential and medium/high wealth commerce with no other industry and a population of 56,000. Will the farms ever grow back or is my only alternative to build ploppable farms? Thanks for the help