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Laburnum Trees

Q.Laburnums grow sport branches that are evergreen non flowering and too long and weeping.

Zone Dublin Ireland | Anonymous added on August 26, 2020 | Answered

I’ve seen this on many laburnums but can’t put a name to it. They sap the strength of the tree and make it unbalanced. When remove they grow back vigorously. They are like cancer.

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GKH_Susan
Certified GKH Gardening Expert
Answered on August 29, 2020

If the tree is grown on a rootstalk, the stray branches could be coming from it.

https://www.gardeningknowhow.com/ornamental/trees/tgen/can-grafted-trees-revert-to-their-root-stock.htm

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