What evergreen to plant in deep shade large planters
That sounds lovely.
A couple of issues to consider....
* do the planters have good drainage in the bottom? (A must)
*do you have many problems with deer?
*would you consider, given the deep shade, a welcome pop of color in these planters?
Possible plants include Yews (Must have good drainage), Inkberries, Hollies, Pieris floribunda, and some Rhododendrons.
If deer are a problem, here is our list of deer resistant plants: https://extension.umd.edu/sites/extension.umd.edu/files/_images/programs/hgic/Publications/non_HGIC_...