These will pose a little challenge due to the fact they are multi- trunked  and and plenty of vertical side branches that will require removal .The tree’s are around 1.8m high and the trunks on these are around 150mm and as yet i haven’t tried to remove them from the ground .I did transplant them from another area in the garden about 15 years ago however a bobcat was used to excavate them and to transplant into their current position .I would expect them to continue to back shoot  down along the trunks that are remaining .I will keep them in the ground until winter then remove them .I most certainly wasn’t gentle when it came to trimming them , 2 down 6 to go . There is several green varieties and golden forms as well.Cheers Alpineart