You probably can use it IF you add a lot of ammendments such as perlite, vermiculite, VERY COARSE sand, and or bark chips. MG is not a good soil for container citrus as its too dense. Citrus plants need an almost freely draining soil to live happily.
Andi

The tree and shrub SOIL is absolutely terrible in containers. To make it suitable for successful container use, you would have to amend it SO much, that it would be much more economical for you to dump in into the yard, as the directions suggest.

I agree with Dorie. You can grow in vanilla pudding too - if you add enough amending material to it; but why handicap yourself by starting with an inferior product and trying to make it work, when you can start with a good (better) product & not worry about it?

Al