Flying grass, also known as vanilla, flying grass and so on. It is a perennial herb of Primulaceae. Whole grass contains aromatic oil similar to coumarin, which can be used as tobacco and balsam. Dry goods can be put in boxes to prevent insects from eating clothes; It is also used in medicine. It has the effects of dispelling cold and relaxing bowels, and can be used for treating seasonal cold pathogen, headache, lumbago, chest distress, abdominal distension, nocturnal emission, ascaris, etc. It is a precious aromatic plant with high economic value and good market price at home and abroad.

Aromatic plants such as fragrant flowers and herbs contain aromatic volatile oil, antioxidants and fungicides, which can not only repel mosquitoes and flies, beautify the environment, purify the air and beautify the room, but also be widely used in beauty, bathing, diet and medical treatment. Essential oils and dried spices extracted from aromatic plants are important flavoring agents in food, cosmetics, soap and pharmaceutical industries. At present, these products sell well in domestic and foreign markets, and are exported to Russia, the United States and so on, showing attractive market development space. In 2003, the United States ordered more than 1000 tons of essential oil in China. Beijing, Shanghai and other places sell more than tens of millions of seedlings and dried spices such as rosemary, lavender, mint and vanilla every year, and the market is very promising.

Vanilla originated in the Mediterranean coast and was introduced to the United States and Canada. /kloc-was introduced to Japan 0/0 years ago and then to Taiwan Province Province. There are 800,000 vanilla lovers in Japan alone. In recent two years, China has started to plant new European vanilla varieties on a small scale, which has performed well in more than ten provinces and cities and achieved good social and economic benefits. European herbs play a very important role in European horticulture. Many gardening departments and lovers have their own special herb gardens. They collect and cultivate all kinds of herbs and plant them in the garden, so that they exude all kinds of fragrance all year round, which is refreshing. It has been scientifically proved that some of these fragrances can sterilize, disinfect and repel insects, and some can regulate the central nervous system, which is very beneficial to human health and make people get rid of sub-health state. For example, mint can refresh the mind, and red basil can cure cough and diarrhea. Because of the multifunctional function of vanilla in Europe, the sales volume in the international market is huge. The vanilla produced in China is in short supply in the international market, and its development prospect is attractive.