ARTICLE BY: LOREE BOHL Loree Bohl is an HPSO Board Member and the lady behind the blog Danger Garden, she’s a freelance garden writer and a spiky plant lover who grows desert loving plants here in Oregon. This article originally appeared in the Rock Garden Quarterly, the journal of the North American Rock Gardening Society, it is republished here with their permission. *** Summers in Portland, Oregon, are the stunning reward for our long, wet, grey and cool winters. Summer days are sunny and the weather is warm (some would say hot, and after the temperature records set this last summer I…