Do plants know astronomy?

Yesterday I attended a workshop on astronomy at the Planetarium. After the workshop my mind was full of spirals, ellipses, the vanishing black night sky....It set me thinking- do plants have some knowledge of astronomy? Farmers and gardeners know that seeds sown just before a new moon have the greatest chances of sprouting.
Do plants resent the deprivation of the black night sky, which is a gift of nature?
This vareigated costus grows in a spiral shape. It reminds me of a spiral galaxy. Another costus, which is a cousin of this is used for treating diabetes.