Is it 4 AM or chicory o’clock? In this short book, botanist and award-winning author Sandra Knapp walks us through a day in a global garden. Each chapter of Flower Day introduces a single flower during a single hour, highlighting twenty-four different species from around the world.

Beginning at midnight in the Americas, we spot the long tubular flowers of the moonflower, Ipomoea alba; they attract a frenzy of hawk moths before the dawn arrives and the flowers wither and collapse. As day breaks, dandelions and chicory open their heads—actually made up of many individual flowers tightly packed together—and flies and bees visit to get the energy they need to lay eggs and raise their young.