Western Washington Fruit Research Foundation. The grounds of the WSU Mount Vernon Northwestern Washington Research and Extension Center are home to experimental orchards and revival orchards and fruits. Many of the best heirloom apples, pears, and berries are flourishing with the help of the Western Washington Fruit Research Foundation, a group of dedicated volunteers. The tour will note the diversity and unique qualities of various heirloom fruits. We’ll do a little picking and tasting, too.