Hello - sorry but this is too wide a question, you need to tell us which tree you wish to plant so we can give you specific planting advice.The company you order the tree from will supply you with package details.

I've bought bare root trees several times. The growers I use have an informative website - http://www.ashridgetrees.co.uk/Planting-Bare-Root-Trees
I am sure you will get info with the trees you order, but you could read this so you know what to expect .