What is the most common flower in the world?

The most common flower in the world is the chrysanthemum.

Chrysanthemum is a popular ornamental plant that is cultivated around the world. It originated in Asia, but today it can be found on almost every continent. The chrysanthemum is known for its many different colors and shapes, and it is often used, for example, at funerals and holidays.

The chrysanthemum is also the official flower in many countries, such as Japan and the United States. It often symbolizes love, happiness and longevity. The chrysanthemum is an easy-care and durable flower, which makes it a popular choice for both home gardens and professional cultivation.

Sources: Wikipedia