The leaves of Datura are oval or wide oval in shape. They are longer and have irregular wavy cracks on them. The cracks are not very big
The leaves of morning glory are round, with deep or shallow cracks, sometimes 3 cracks, sometimes 5 cracks, the cracks will be deeper
The flowers of Datura are funnel-shaped and slender, with five shallow fissures and triangular lobes. The flower color is single, the upper part is white or lavender, the lower part is green.
Petunia is generally axillary, 1 or 2 in the top of peduncle, although the Corolla is funnel-shaped, but relatively short and round. The color of flowers is more diverse, there are purple blue, white, purple red and so on.
Datura is a kind of herb or semi shrub, which can grow upright without relying on other plants. Its height is about 0.5-1.5m.
Bellflower is a kind of twining plant, which can grow normally only by relying on other plants. It can climb rattan, with very long length.