A gardener asked me about her problem: She planted seven PGM rhodos over two years ago, in a row as a screen. All bloomed well last year. This year, six have bloomed well, but the seventh, at the end of the row, has not bloomed. It has retained the brown winter colour of its leaves, and it set buds, but has not developed further. Could the problem be root weevils, or a root fungus, or ??? How to diagnose? Could the problem (disease?) spread to the other PJMs? How to cure? Thank you, Louis Peterson.