Plants rest during the summer nights. When the sun sets and the amount of sunlight decreases, the plant stops photosynthesizing. This means that plants do not produce sugar during the night. 

When night falls, plants close the air holes of their leaves in order to prevent water from evaporating. The petals of many flowers also close during the night. 

However, all plants do not rest through the night. In fact, some flowering plants continue to attract moths with their strong smells. The picture below shows a privet hawk moth approaching a flower. Moths drink nectar from the flowers, while transporting pollen from one flower to the next at the same time.

Some plants require short nights in order to grow flowers. Other plants need a long, dark night in order to bloom. 


A privet hawk moth drinking a flower's nectar.