Hi Verdun, it's almost completely resistant - perhaps 5 to10 curled leaves a season which I just pick off as I see them. When I first planted it I missed a sucker growing from below the graft - on that small branch, every single leaf was affected (which is how I spotted it!)
A trowel in the hand is worth a thousand lost under a bush.
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Hi Verdun, it's almost completely resistant - perhaps 5 to10 curled leaves a season which I just pick off as I see them. When I first planted it I missed a sucker growing from below the graft - on that small branch, every single leaf was affected (which is how I spotted it!)