The true begonia is a woody, non-toxic plant of the apple genus of the Rosaceae family, of which the fruits of Begonia occidentalis are often eaten in preserves.

But most people don't recognize a true begonia. They think of real begonias as pear blossoms or cherry blossoms. And they think "begonias" actually includes long life flowers, begonias, geraniums, geraniums, and many other red flowers, these should not be eaten, especially the tiger prickly plum has a strong poison, geraniums have a bad smell can easily lead to allergies.