By Johnbush23
Buckinghamshire,
United Kingdom 
Our laburnum tree is at least 30+ years old. It is growing in a sunny position and has never been pruned since we moved here 24 years ago. Today we have noticed cracks have appeared down its trunk. Is this something to worry about?
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laburnums page
24 Aug, 2010
Answers
Exactly. I've got some cut stems from a garden clearance, and the outer bark is split, but the wood is sound. The tree was perfectly healthy. Phil J
24 Aug, 2010
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A photograph would be helpful, but do you mean actually in the trunk, or just in the bark?
24 Aug, 2010