Cycas requires high temperature and humidity in the environment, and it must adapt to the environment to blossom and bear fruit, otherwise it will only grow and not reproduce. Cycas cycas grows very slowly, and its life span is as long as 2 years. Therefore, Cycas cycas with a hundred years was misinformed as Cycas with a thousand years.

Cycas revoluta, also known as Pteris formosana, is the most primitive species of existing seed plants, and its fossils have been found in the Paleozoic Carboniferous strata 28-35 million years ago. With the change of geology, many plants have disappeared in the long process of natural selection and species evolution, but Cycas has withstood the test and survived to this day.

Cycas is a primitive gymnosperm, and its stems are upright and straight, usually unbranched, generally about 1-4 meters high, and some are as high as 2 meters; Feather compound leaves are born at the top of the stem, the lobes are banded, the two sides are slightly rolled to the back, and there is only one main vein; After the leaves fall off, they leave obvious marks on the trunk, making the bark rough and hard, as if wearing a suit of armor.

Cycas usually blooms in July and August. A dioecious plant with flowers at the top of the stem. The male flower is a long rod-shaped spike flower formed by the dense aggregation of many microspore leaves; The female flower is composed of a cluster of carpels scattered in a broad oval shape, with light brown or yellow-gray villi on the surface, and 1-3 embryo balls on each side of carpels. Cycas seeds mature in October, and the seeds are round and bright red, like a small red egg, which is called "Phoenix Egg".

in tropical and subtropical areas of China, Cycas plants can bloom once a year for about ten years, while plants potted in the north generally do not bloom for life. However, due to the different environment, in recent years, the news of Cycas orientalis blooming in the north is often seen in newspapers.

There are only 1 genera and 11 species of Cycadaceae in the world, which are distributed intermittently in America, Africa, Australia and East Asia. There are only 8 species of Cycas in China, which are distributed in Taiwan Province, Fujian, Guangdong, Guangxi and Yunnan provinces. As ornamental trees in courtyards and bonsai, cycads and cycads in South China are the most common. An ancient cycad in Yongquan Temple in Gushan, Fuzhou, has a tree age of 8 years, which is rare in China. In the coastal mountainous area of Fujian, a large area of natural Cycas community is preserved, which is a unique spectacle in China and hard to find in the world.

Cycas is a beautiful ornamental plant, and several plants are cultivated in the courtyard, which is quite tropical. It has a wide range of uses. The stem pith is rich in starch, xylose and glucose, and can be made into flour for eating. Leaves and seeds can be used as medicine and have many medicinal values.