Asked December 16, 2015, 11:03 AM EST
I have a mature maple tree in my back yard We have not done much with this tree, but I noticed this last year that it did not look robust. I know that it was a drought year, but I wondered if feeding the tree might help. The house dates from 1960 and the tree is likely close to the same vintage. It is in the middle of a flat lawn. I assume that 1) I would need to test the soil,2) select fertilizer based on these tests. If this is correct are any of the soil testing labs listed on this web site more appropriate than others? What is the best source for high quality fertilizer that is likely to be of maximum benefit to the tree without causing pollution? Thank you
Montgomery County Maryland