Just wondering if I could get some advice on what looks like a bit of an outbreak of pseudomonas syringae across my maple collection. I'll take some pictures and update tomorrow (it's dark now in the UK), but what was last year a single incident confined to a Bi Ho, which I luckily caught in time and treated (it's slowly recovering), appears now to have hit at least two of my more established maples and a third slightly younger. I've got the elements for Bordeaux mix arriving tomorrow. But would appreciate any steer from those with experience around what might be causing this and any preventative steps I can take to reduce the risk of further trees being impacted. As a side note, all of these Acers were in the ground - which is making me concerned it might in fact be verticillium wilt. But if that was the case, would my Bi Ho have lived for over a year now following a swift amputation to the infected limb and several drenches of copper fungicide? I've also read up about Botrytis. Anyway - thoughts welcome on best way of reducing a future reoccurrences.