Spirea plant. Maybe japonica? (chorley PR6)

Large spirea plant dug out of garden yesterday. I am not sure which variety. Looks like spirea japonica, does flower with little pink flowers, i have had to cut it back to dig it out so it is looking a bit bare. Regrows easily. Large root ball so quite heavy and I have just wrapped it in plastic so not potted. I can't lift it but I am a weakling! Could always shake more of the soil off to make it lighter if needed. I don't have horsetail or any other invasive species in the garden but there could be a couple of weeds. Will take first request in order to not have it out of the ground for too long