2. Different distribution, Platycodon grandiflorum is widely distributed in China, including northeast, north, east and central provinces, as well as southern coastal provinces and cities.
Eustoma grandiflorum, as its name implies, is an exotic species. Native to Colorado, Texas and other places in the United States. It was introduced to Japan and South Korea in the last century and became popular.
3. The leaves are different. Seen from the leaves, the leaves of Platycodon grandiflorum are mostly oval or lanceolate, with fine serrations at the top, green surface and white powder on the back, usually in whorls.
The leaves of Buxus macrophylla are oval, whole, gray-green, opposite.