This seems to have died in the mid section - does anyone know what it is and do I need to cut the scorched looking parts out please?
This is a common infection with Pyracantha shrubs. Oddly enough, it shares a similar name with the Firethorn Shrub. It is called Fire Blight.
These articles will help:
I lost 2 very old plants in the middle of my hedge.
We have a few articles that will help you accomplish this! These will help:
My Firethorne plant leaves are turning yellow and becoming brittle. What can I do to revive it.
Your firethorn plant may be suffering from fireblight. Here are a couple articles that should help:
Hi I have planted 3 firethorn plants (all three colour berries) in my garden. The ground is very dry due to the lack of rain in north wales thia week. They are 50cm/60cm height. I watered them in well on Sunday 24th. The groind was very dry around them by today so i have given them around 3 quarters of a litre each this evening. Im just wondering how often i should be watering and how much. The advice given is that they are hardy and dont need much water but am unsure whether they actually do need water more when in the process of establishing. Thank you Gareth
Yes, they do need water while getting established, but they do not like to be overly wet. Here is more on their care:
It is possible that weed killer has been applied (not by me) next to a path which is next to the pyracantha - could this cause the damage?
This could, certainly, be the culprit. It could resemble fire blight, but this doesn't seem likely with the speed of progression. Here are some articles that will help: