Southern Gardens and lowcountry go together.

I am in the "upcountry" of SC. Lowcountry is south of Columbia.Upcountry is north of Columbia.
I love the Lowcountry and I have I have a Charleston style plantation house. I have planted cold hardy palms but basically have kept it a southerm garden with lots of Camellias, Magnolias, Gardenias, Confederate jasmine and Lady Banks roses etc.

Do a google search on Charleston Gardens and that will give you ideas on gardens.

and lots of Azaleas!

I reread my post and need to clarify.
Lowcountry represents Charleston/ Beaufort/ Summerville/ Hilton Head and surrounding areas.
Between the Upcountry and Lowcountry you have the Midlands.

When I think of Lowcountry I think of fountains/ courtyard gardens/ statues/ palms/ southern gardens/ Formal gardens with sheared hedges and topiaries.

"Lowcountry represents Charleston/ Beaufort/ Summerville/ Hilton Head and surrounding areas.
Between the Upcountry and Lowcountry you have the Midlands."

That is exactly it, at least in its usage in SC. Why the coastal Georgetown/Myrtle Beach area is not usually called "Low Country" I'm not quite sure, but it usually is not. Myrtle Beach is too new to have an old colonial-era designation but Georgetown is plenty old enough.

Big sprawling live oaks are probably the archetypical view of old-time low country.