Aqua blue pots in the landscape and staggered on the side of a hill were not my idea, but my bride's, the person who pops up on my phone as Jan My Love Winter. I have avoided this color like the plague for most of my life. To modify the French phrase, this project was going to be my "peace" de resistance. Jan is a gifted and natural plant groomer when it comes to our mixed containers, so making peace is the goal.
The containers have two sections, a lower reservoir for pea gravel and the upper-level for a good lightweight potting soil, which I consider the critical element for all containers and baskets. I was also required to drill drainage holes in the upper-level compartment, and in the bottom.
Since the containers were to be staggered on a slope, I decided to wait until they were planted to level up not only with each other but from every angle in the landscape. For this I used wood shims much like you would use for furniture in an old house.