New Poster Contest Rule Post author:Karen Wilwol Post published:March 27, 2017 Post category:Uncategorized UPDATE: In order for your poster to be eligible for the National Association of Conservation Districts National Conservation Poster Contest the poster must be 14″ x 20″ in size. You Might Also Like 2019 Poster Contest March 7, 2019 Fall 2016 PHS Tree Tender Classes – Register Now! August 12, 2016 i-Tree Tools for Assessing and Managing Community Forests November 5, 2015