halacha - What conditions would render plants non-kosher?

Under certain conditions, I know that uncontaminated (e.g. no insects / meat, etc) plant-based foods are prohibited (ie., non-kosher). Examples I can think of include:

1. 
   

   Non-kosher wine

   
   



2. 
   

   Chometz during Pesach and

   
   


3. 
   

   Plants harvested on the sabbatical/shmita year

   
   

What other conditions would render uncontaminated plant-based foods non-kosher?