This is one of those plants, like so many members of the Commelinaceae family, that looks great when a bunch of fresh cuttings are first installed in a pot but when older leaves die, they are marcescent and stay attached to the plant. This happens when stems dangle over the edge and their mass becomes too much to support without the ability to put more roots into the soil like what would happen if it was creeping across the ground making roots at every node. This yields an old, tired look, even on plants that are perfectly healthy. Manually removing the shriveled leaves, along with trimming and sticking the snipped pieces back into the pot periodically is a way to keep these kinds of plants looking fresh. And/or, you can curl them back toward the pot so that new areas of the stems are able to touch the soil and make more/new roots.
If it gets loose in the ground where you are, be aware that it will spread like wildfire and climb over other plants that aren't tall enough to get above it.
I believe it is a succulent because cut stems will stay firm and fresh-looking, continuing to form new leaves, taking months to slowly shrivel from the cut toward the tip, patiently waiting to make contact with a place where roots can form.
