Preserving plant specimens is the best way to identify plants by their characteristics at a later period of time. It is always best (if possible) to collect the entire plant specimen at peak production, so you have included the roots, flowers and potentially the seeds of the plant. The Hermiston Agricultural Research & Extension Center is located at 2121 South First Street in Hermiston, Oregon. Office hours are 8:00am - 5:00pm, Monday - Friday, closed during the lunch hour, noon - 1:00pm. http://extension.oregonstate.edu/umatilla/ipm
