Can i grow,CORDYLINE PURPLE HEART PALM in a large pot in my garden in scotland?

Yes, but it will need some protection from the cold and wet of winter. Use a compost with a lot of grit in it, and put the pot in a sheltered place for the winter, I've seen them with snow on them and they've survived, but afford it as much protection as time and money will allow.

Can i grow,CORDYLINE PURPLE HEART PALM in a large pot in my garden in scotland?
Yes - absolutely! However, make sure you get a horticultural fleece for it from about now - once the frosts start. I have three in the garden (am in Worcestershire) and they are fine all winter here (quite sheltered) but they don't like hard frosts.
Reply:If you can move the pot move it to stand against your house wall, where it will keep slightly warmer. Tie up the centre leaves to form a point so as to protect the growing tip of the plant. Dont worry to much about the lower leaves because they will die and fall next year anyway. Bubble wrap the plant pot itself not the plant. That will keep the roots warm. Good luck, because we now never know what winter will bring.