1、 Different plant types

In adulthood, the plant height of Rehmannia glutinosa will be higher. The whole plant height is about 60-120cm. Sometimes there is almost no hair on the stem

Goldfish grass is relatively short, not so high as a whole, about 20-80cm. Put the two adult plants together, you can distinguish them. They are very similar in appearance, and it will be difficult to distinguish the seedlings directly

2、 Different leaves

The leaves of Rehmannia glutinosa are round and wide, oval or long oval in shape, about 5-15cm long, and there are short round teeth on the edge of the leaves

The leaves of goldfish grass are narrow and long, but smaller. The shape is lanceolate to rectangular circular lanceolate, with a length of about 2-6cm. The leaves are entire

3、 Different flowers

The flower color of Rehmannia glutinosa is light purple, as well as white, purple, yellow, red and other colors. The corolla on the plant will tilt, one side will expand into a bell shape, and the single appearance is in the shape of a small horn, which is arranged neatly

The flower colors of goldfish grass are more diverse. There may be several colors on a flower, mainly dark yellow, light yellow, yellow orange, light red, crimson and other colors. It looks like a small goldfish and doesn't look so neat