bb112073   
   From: 25c5f0160ad3ae3f4f25904e264324a3@example.com   
      
   Could be a few things as mentioned already. Most common cause, black spots on   
   any type of leaves in the Northern hemisphere lately are mould, due to a lot   
   of rain for a while, in the winter/spring, then dry periods.  Fungus/mould   
   spores love these    
   conditions.   
      
   *You can safely try this. *   
   Mix a tablespoon of Bicarbonate of Soda into a gallon of water, then spray on   
   all over the entire plant leaves. It will take a while to cure, as will not   
   suddenly disappear.   
   Mould needs acidic PH levels to grow, and by using/adding Bicarbonate of Soda,   
   you are changing the PH slightly to be more alkaline, which will stop/kill any   
   moulds spores in their tracks.   
      
   Another thing, if Potatoes, is use a mulch under the leaves, on top of the   
   actual soil, this helps trap moisture in the mulch, instead of the leaves.    
   The leaves will eventually start to go from green to yellow and fall off, long   
   before end of season,    
   for a few reasons, other than what I mention here.   
      
   Another nature product is Neems oil, also mixed and sprayed on, which is safe   
   on any leaf plant, indoors and out, good for a variety of bugs that eat or   
   live in leaves.   
   This is just another in a line of probable causes and fixes.   
      
   --   
   For full context, visit https://www.homeownershub.com/edible/bli   
   ht-on-my-potatoes-3317842-.htm   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)