> Was it a combination of night luminescence and gravitational pull that told the plant when to flower? Almost definitely light response - orchids are pollinat

> Was it a combination of night luminescence and gravitational pull that told the plant when to flower? Almost definitely light response - orchids are pollinated by a wide variety of insects, including night active moths. Almost definitely not 'gravitational pull' as the moon's mass does not vary based on the amount of light it reflects towards one particular direction.