A thickening of the trunk can be seen on the trunk of the mature broom. A weak sprig of laburnum leaves has appeared from below the join
https://media.expressional.social/media_attachments/files/112/570/238/355/074/396/original/00152f50bc3cac35.jpg
Ahah. So our Moroccan broom is grafted onto laburnum.
That combination is interesting because Laburnum and Cytisus are not only compatible for grafting, they also sometimes combine into a chimera.
Whereas a hybrid shows characteristics from both parents, with the plant chimera it is like a Frankenstein monster, with one side of a stem laburnum and the other side broom. Messy and weird.
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