Spots on trees?

I recently received an email from someone regarding spots on their tree. My policy is to ensure that people know that my first hour is free, so that we can discuss any problem in detail, and so I can assess the situation before any unnecessary charges are incurred by my client. One option that arose was the possibility they they might approach the nursery that originally sold them the tree to determine if they've seen the problem before, and could recommend any treatment solutions - as suggested by my client's husband. This is an excellent solution, and one I definitely recommend before seeking any alternative solution, especially if the tree is less than two or three years old. Any nursersy worth their salt will be able to diagnose the problem, and if absolutely necessary, replace the tree free of charge.

To do this, I suggested that they go ahead with this approach, but also with the knowledge of how old their tree is, the kind of tree it is and an accurate description of the problem. A digital photograph of a leaf exhibiting the disease symptoms is an excellent tool with regards to this approach. It is a good idea not to bring in a leaf with the disease on it, because it will not be received kindly, as the leaf potentially may contain active spores that could infect similar trees within the nursery itself.

In many cases, the problem can be cleared up with proper sanitation measures, up to and including removal of all leaves on the ground after they've fallen off, and sterilization of any equipment used to trim the tree(s). Sterilization can be as easy as dipping any cutting implement into a solution of approximately 1 to 2% bleach. The following year, carefully monitor the tree for any recurrence of symptoms. Repeat this procedure, and it should clear up by itself.