Placido wrote:I'm with Willpar about the drainage, Bikey. If, for instance, your cotoneasters are in high-grade compost and the rest of your garden is clay-based soil then that might be your first rethink .......
Any time, just ask
Biker wrote:Thanks so much Willpar, Placi and Jacksparra. That all makes perfect sense to me. The area is one I excavated a few years back and is not the natural clay soil. It is a combination of good quality fertiliser and topsoil (dozens of bags of the stuff). In addition, the plastic Eagle Owl people over the back had a slopping roof to their shed installed two years ago and it runs off into my back garden where the Cotteneasters are (they didn't have any guttering fitted).
So, it looks like water logged, pruning schedule, location etc.
Willpar: Yes, they are the tree type. Should grow to 12ft max, but I may not have carried out the right pruning over the years.
Really grateful for this info team. I've never lost a plant yet and I don't intend to.
I'll have that rethink placi and see about relocating the Cottoneasters and moving some of my native plants into the wet zone.
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