ARTICLE BY: GERHARD BOCK Davis, California, gardener and blogger Gerhard Bock made his first trip to Hortlandia this year, today he shares his experience with us. You can follow along with Gerhard’s travel and garden adventures on his blog Succulents and More. *** This spring I finally had the opportunity to experience an event my PNW gardening friends have been raving about forever: Hortlandia, the Hardy Plant Society of Oregon’s (HPSO) annual spring plant sale. Hortlandia isn’t “just” another plant sale, it’s the Coachella of plant sales! It’s such a massive event that it’s held at the Portland EXPO Center….