What happens to plants that are less aromatic in life? If you think that there will be less interest and no big deal, then the author will criticize you mercilessly - big mistake! Take our kitchen, coriander, pepper, pepper, wild fennel (cumin), star anise, cinnamon, clove, fragrant leaves, thyme, mint and other condiments, they are all derived from aromatic plants, do not look at things But if life is less, the food will be boring, so-called food, it can only be a legend. In ancient times, the rich vanilla was a symbol of the status of a gentleman. Only noble moral scholars were qualified to wear herbs such as Zeeland and Perrin.

Aromatic plants are fragrant because they contain volatile aromatic oils. These volatile oils are mostly monoterpenes and sesquiterpenes. Sometimes, these aromatic oils are hidden in plants and sometimes stored in epidermal cells. For example, the famous aromatic plant rosemary has a lot of "granules" on the back of the leaves like pearls. These "granules" are the glandular hairs on the surface of rosemary leaves, that is, the storage warehouse of aromatic oil. This kind of warehouse is also found on the leaves of the ornamental plant pepper wood, except that these warehouses are not located on the back of the leaves, but are embedded in the mesophyll to form a transparent oil spot. With a light hand, the aromatic oil will flow out and the aroma will overflow.

These aromatic oils are collected and refined into essential oils, which are widely used in the fields of cosmetics and medicine, bringing huge economic benefits.

Aromatic oil is a secondary metabolite in plants, not a necessary material for growth, but with the presence of these volatile substances, it will leave the hateful insects and small animals far away, greatly reducing the bedding. The danger of eating and trampling. Therefore, before and after the Dragon Boat Festival, some people always want to insert the aromatic plant Artemisia argyi in the doorway, in order to prevent insects and insects.