im going to post a link to a web site i find informative and helpful . http://www.ces.ncsu.edu/depts/hort/consumer/factsheets/trees-new/index.html this is a trees fact sheet and has links to fert/lime treatments and even pruning tips. ill be sure to keep this thread current and will post links or studys as i find them, and welcom others to do the same . one request though is no spam. this could turn into a very useful and knowledgable thread with your participation , thx in advance, MAD whacker.