CHARLOTTE, NC--(Marketwire - January 31, 2011) - Organic Plant Health, Inc., (OPH), ( PINKSHEETS : AMSZ ), an exclusive manufacturer and distributor of organic-based fertilizers and soil conditioners, announced today that it has retained the services of SEC auditing firm Silberstein Ungar, PLLC, http://www.sucpas.com , to perform a certified audit of complete 2009 and ...