Glazed pots= deciduous/broad leaf trees generally speaking. What options are you considering? Hard to tell you what to out in them if we don’t know what you have. Usually you try to buy the pot to fit the tree, not the other way around.
I had planned the juniper in the brownish one and maple in he greenish one. Yet the greenish one turned out too small for the maple.
Got olives, tiny red maple, fusion tea,
That might fit in small one.
Large one doesn't look as shiny as in the pic and is more on the matt side. Got juniper, cedar that fit the size or maybe an olive.
After the pots were made, unfortunately they didn't match the size of the trees I had planned, still I don't mind buying new trees for them.
Thanks