Has anyone had experience transplanting a buddleia Davidii. Mine is about 7 years old and grows to 10' every year. I cut it back to 3' tall during the winter. The trunk is about 1 3/4 to 2" diameter. It stays evergreen but it appears to be fairly dormant right now however new shoots are showing up. If it can be transplanted how big should I expect the roots to be? What is the success rate like? Thanks for the help.
Lift it promptly, replant and see what happens. If it shrivels and doesn't bounce back later in spring a replacement can be gotten comparatively cheaply and easily. Down here this fast-growing shrub is now being regarded as a pest species.
Aslo, try cuttings and see how easy it is to mass produce these shrubs. I have had success with cuttings up to 1.5 cm in diameter, and left planted insitu.