Lunar Roses are something I came up with quite a while ago. Visually they look like a hybrid of a rose and an orchid. Lunar Roses absorb moonlight and at night will cycle through all colors. Once plucked though, the color becomes permanent. As long as it gets water and moonlight, it can be kept alive indefinitely.

They are exceptionally good at converting CO2 to O2 and can thrive in many different climates.

Art by  Jameless