Two of the photographs above are of a collection of Sorbus trees that I had in my garden. They are now nothing but a pile of ashes. The sorbus you see are members of the rosaceae or rose family – the most of which are susceptible to a disease known as fireblight.
The first thing I noticed was that the leaves were shrivelled, dead and still clinging to the plant. [These photographs were taken the last week in January btw]. The buds were also dead but still held to the plant. When I checked inside they too were gone. Necrosis had set in and the stems were dying from the top down.
The cause of this is the bacteria Erwinia amylovora spread generally by the wind blowing, insects and rain splash. It is that simple.
The recommended method of control used to be to burn the plant and that was the route I chose. I guess old habits die hard 😉 But some books recommend the pruning of the plant well below where the fireblight can be found. I simply prefer the better safe than sorry route and the chances of it affecting some of the many other Sorbus sp. that are planted in my garden.