The following question was sent to the P&PDL diagnosticians here at Purdue University:

Question: This spring we planted new blueberry plants we planted them in peat moss and soil mixture some of the plants have developed red spots and blotches on the leaves the problem does not seem to be getting any worse please send us any information you might have.

Answer: There could be several different things that could be causing the spots on your blueberries. It is difficult to diagnose via the computer without seeing a sample. Before control recommendations are given, it is very important to identify the problem correctly. Therefore, we are not able to answer your specific question. You are welcome to submit a sample to our lab and we will diagnose the problem for a fee of $11 within Indiana, $22 outside of Indiana. Make checks payable to Purdue University. You can find a copy of our sample submission form on our homepage, or you can write a letter describing your problem. The more information you can give us, the better. Information such as variety, when noticed the problem, how old are the plants. For more information on submitting a sample, please call (765)-494-7071 or fax (765)-494-3958 our office. Mail your sample to:

Plant and Pest Diagnostic Lab
Purdue University
915 W. State Street
West Lafayette, IN 47907-2054

--Peggy R. Sellers, Ph.D., Director, Plant & Pest Diagnostic Laboratory

Information listed is valid only for the state of Indiana.

The information given herein is supplied with the understanding that no discrimination is intended and no endorsement by the Purdue University Cooperative Extension Service is implied. Any person using products listed assumes full responsibility for their use in accordance with current direction of the manufacturer. Purdue University is an equal opportunity/equal access institution.