What is the theme of poem Orchids?

In "Orchids," the speaker uses the allure and beauty of orchids to reflect on the themes of transience, time, and mortality. The poem highlights how these delicate flowers bloom briefly and fade away, capturing the fleeting nature of existence. The speaker observes how the orchids "know life's mystery" and finds solace in their acceptance of their ephemeral nature. The poem thus serves as a reminder to cherish and appreciate life's moments, as they too will pass swiftly like the bloom of an orchid.