Can eugenia topiary be planted in the ground in its container in zone 7 for removal in the winter?
Planting Globulus Topiary Eugenia
Certified GKH Gardening Expert
Yes, this sounds like a good plan for your Eugenia. Just make sure to dig it up and bring it indoors before temperatures fall down to 25 F. You'll probably need to repot it every 3 years or so. There's a chance it may someday get too big to lift in and out of the ground, but for now this system should work well.
Here's some more information on Eugenia growing in and out of containers: