http://mygarden.rhs.org.uk/blogs/helpandadvice/archive/2009/02/09/rhs-help-and-advice-member-s-question-of-the-week.aspxMr J of Leicestershire, sent pictures of his Colorado spruce tree ( Picea pungens ), bought as a specimen in November 2006, which started suffering foliage damage in late summer in 2007 and again in late summer 2008, gradually affecting much of the treeCommunityServer 2007.1 SP1 (Debug Build: 30415.43)