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My Rowan tree is showing signs that it may be dying. The leaves are starting to turn brown and the bark is splitting open on the trunk. Has anyone any ideas what is causing this? I had exactly the same problem with another about 3 years ago with the leaves not falling in the Autumn when they had totally turned brown and the bark on the trunk showed the same splitting. I had to resort to felling and replacing it.
Healthy Mountain Ash trees are gorgeous specimens that can help brighten up even the most unattractive yards. However, the species is not immune to diseases that can rob it of its beauty and charm.
Among the most common infections that afflict the Mountain Ash tree include:
Mountain Ash is also susceptible to sawflies which can defoliate the tree within a few days.
Found the above while surfing and thought it might help you with a diagnosis!
This is what the leaves, berries and bark look like. Looks like it might be Leaf Spot plus something else. Anyone any ideas what it is and how to cure it?
That splitting of the bark at the base of the tree looks extremely serious and possibly a sign of Honey fungus, unfortunately. It would also explain why you recently lost another one. Have a look at the RHS advice:
Thanks for that. However, looking at the RHS link you sent me I don't think its Honey Fungus as there are no signs at the base of the tree and the splits in the bark go up to at lease 3m.
You stated about your old trees `the leaves not falling in the autumn, that is a tell tale sign of fire blight this also causes splitting of the bark
The bark splitting is the tree trying to protect itself from disease
The tree above, could you go out with a sharp knife and take the bark off round the scar and tell me what colour the trunk is under the bark you have taken off and is it oozing pus
It might be another form of fungus, Magnum. Try poking a large screwdriver etc through one of the cracks in the bark into the heartwood of the tree. It should be solid. If it crumbles, then the heartwood is rotting and it will be terminal as the wood will have lost it's strength and the tree will be prone to being blown down by the wind, or branches may fall under their own weight, making it dangerous. Have a good sniff through the cracks too - any hint of a "mushroomy" smell would also indicate a fungal infection. Those are not treatable, unfortunately.
This is what it looks like under the bark. There is no mushroomy smell and no signs of oozing. A screwdriver only goes in about 5mm.
A Reddy Brown discolouration on the trunk is Fire Blight
I think Buddyboy is right.