Garden

[YOFJAB]

I only have cement along and behind my house so I can only have plants in containers.

1 -- What kind of soil should I purcahse? Someone told me not to buy potting soil ( they said that is only for inside the house), but rather I should by garden soil for my container.

2 --And what is your opinon on those soil bags with 3 or 6 month slow release fertilizer already in it?

3 -- Am I supposed to try to change the dirt ever year or so in my container? I heard after a few years all the nutirents are lost and fresh dirt should be put it the container. But some of my containers have small / medium trees in it or mixed bulbs.....

Thanks