Hello, I am Dr. Ayhan Ozveren from Turkey. As I saw your website, I felt the need of asking a question which is confusing me. This year, I started growing plum in total of 2000 japanese plum trees which are 2 years old. These 2000 trees includes 3 different types of plum; black diamond, black beauty and black amber. Can you tell us which type of plum should be used as a plum pollinator for our trees? Looking to hear from you. Sincerely, Dr. Ayhan Ozveren