1. Different shapes

Rhododendron: it is a perennial plant with no hair and blue gray color. The stem is upright and long, with a height of 30 to 60 cm. There are many branches on it, showing an expanded state. It doesn't have many leaves, only a few, with a length of 10 to 30 cm and a grayish green color. Its flowers are solitary at the top of the stem and branches. Its pedicel is 5 to 15 cm long. The receptacle is a little concave and its shape is similar to the funnel shape. When it blooms, it will become cup-shaped. Usually, the petals have four petals, which are triangular fan-shaped, with a length of 2.5 to 3 cm. The color is yellow, and there are some orange spots on the base. The flowering period is usually from April to August

Yu Meimei: its stem is also upright and long, but there are many light yellow bristles on it. The leaves are different in length from 3 cm to 15 cm, which can be seen from each other. In addition, its flower shape is oval, the color is purplish red, and there are purplish red spots on it, so the flower color and shape are also different

2. Different main values

Hualing grass: Hualing grass is very good to watch because of its beautiful leaf shape and gorgeous color. In addition, it has certain medicinal value. The extract from its plant can treat some swelling and pain of our body, but it is also a little toxic. When you accidentally touch its leaves, it will easily make your skin itch and get some small pimples. If it is serious, you have to see a doctor. In addition, its fruit can't be eaten, otherwise it will cause vomiting and diarrhea

Yu Meimei: its ornamental value is higher than that of hualingcao. The flowers are very beautiful and have a long flowering period. Therefore, it is often seen in some flower beds. In addition, its medicinal value is also higher than that of chamomile. The former is toxic, but its whole plant can be used as medicine. It can treat some cough, diarrhea and other diseases, and the effect is very good