I bought a Dwarf bareroot Pomegranate this winter and am shocked at how well it's done in a container. Although we live in Zone 8b and this bush will survive our winters in East Texas, I've chosen to keep it in a pot due to lack of sun and water.
I am grateful for a second go round of blossoms! The first round didn't get pollinated. We have a severe deficit of pollinators here in our Piney Woods. When my little bush bloomed a second time, I hand pollinated each blossom and to my delight I've got multiple baby Pom Poms growing!
I'm sure you know hand pollinating can take various forms, I just use my finger tips and dip from bud to bud. Works for me!