What should I plant in my containers that are shaded by a tree canopy? Preferably easy…

[Anonymous]

I have some tall rectangular containers (veradek span planters) on my patio. The patio is shaded by a canopy of leaves from maple trees.
The containers are there to kind of hide an ugly part of my yard so I would like them to be pleasant to look at year-round with low effort. Does anyone have any suggestions on what type of plants to put in? Evergreens of some kind? It would be nice to have a mix of different things in the planters but I’m really not sure where to start given the shade when trees are leafed. Thank you.