On my cherry blossom tree. at the base there are what appears to be what look like clinkers(bits that you can break away), have you any suggestions to what this might be.u
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fidgetbonesDerbyshire but with a Nottinghamshire postcode. Posts: 16,462
That doesn't look at all good Pete. How deep is the fissure? As it's close to a footpath, you may need to take advice from a tree specialist in case it's not safe.
The 'clinker' like stuff looks like a hardened form of the resin which cherry trees produce whenever they are damaged or infected. It's the cherry-tree equivalent to a scab forming following a skin cut on one of us. In this case the sunken area of bark makes me suspect a serious case of canker from which the tree is unlikely to recover. However, it may still live on like this for many years but if it is a large tree it would be wise to get a tree surgeon to inpect it in case the heartwood has been weakened by a subsequent fungal infection, which is not unusual. Cherry trees are relatively short-lived and often last only about 25 years, so it may be on its way out anyway.
A trowel in the hand is worth a thousand lost under a bush.
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