SOGA and plants.

[Eleven]

I've just been to a garden centre and paid £75 for a tree, however I've noticed that it's had its root cut off. I've called the garden centre and they are saying I shouldn't try to plant it, that I should keep it indoors and it's only supposed to last until just after Christmas.

This doesn't seem right and I cannot help but feel I'm being had over. Any legal experts able to advise on this please?