It’s there, huddled in the sea of moss that blankets the xaxim panel of my terrarium. The plant took its time to produce new leaves at a decent rate, but I can now count more than twenty of them, albeit small ones. More are probably hidden within the moss. Saying that it is anywhere close to flowering would be a stretch, but at least it does grow.
The tree fern panel of my terrarium should make an excellent growing support for U. campbelliana, considering its epiphytic habits. That said, I could not insert the stolons—on which the bladder-like traps are—into it. These things are not supposed to be aboveground and have a tendency to dry quickly, so the first few weeks will be crucial as to whether the plant will settle or not. If it manages to dig through the tree fern fibers, where moisture is higher, it should be fine.