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  1. Russell Plumb

    Rhododendrum leaves curling

    The photo above is a coupe of rhododendrons at my house. The one on the right has curled leaves on a 55 degree day. We have seen this on a few properties in the last two day and believe it may be Phytophthora. Any input from anyone? We’re thinking Agrifos soil drench of 12oz per 100 gl.