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pyracantha fireblight

I have pyracantha growing beneath the bays at the front of my house - they were planted many years ago and until 2016* were trimmed with shears and secateurs; they now show signs of fireblight - I've been cutting out the black shoots but i'm keen to know more about the fungus spray mentioned in previous posts could you give me more details
*since 2016 I've had to employ help in the garden and hedge trimmers have been used - I wonder if this has contributed to the problem?
any advice/comment would be appreciated
thank you
0
Posts
https://www.diy.com/departments/bayer-garden-fungus-fighter-plus-ready-to-use-disease-control-1l/228530_BQ.prd
but bear in mind this was 7 years ago so the make up of the product could well have changed.
According to the RHS there are no chemical controls for fireblight
https://www.rhs.org.uk/advice/profile?pid=160
although they do suggest various products for pyracantha scab
https://www.rhs.org.uk/advice/profile?pid=265#:~:text=The fungicides tebuconazole (Provanto Fungus,may give some control of
There is more information here and also a link to a section on fireblight
https://www.gardenfocused.co.uk/shrub/pyracantha.php