Orchids are the subject here, and the speaker's point is a quiet, slightly sad one: a flower can be lovely and complex and still go unnoticed. The poem begins by describing the orchid as familiar and "simple," then reminds us that it is "complex in its makeup," with vivid colors showing from the inside. That small contrast sets up the main tension. Something can look ordinary and still hold a lot of depth.
The speaker seems to feel a mild regret, or at least a gentle observation about how people behave. We walk past, admire the flower for "a few seconds," and move on, forgetting its "momentary beauty." The poem even acts out this habit. It opens and closes with the single word "Orchids," and the last lines shrink to a short, flat list: "A beautiful, / Forgettable, / Flower." The mood is calm, reflective, and a little wistful, as if the poem is nudging us to slow down and look longer.