1、 Because of the fragrance of flowers

Some flowers have fragrance and some flowers have no fragrance. That's because fragrant flowers contain an aromatic oil. The aromatic oil volatilizes through its own metabolism and becomes the flower fragrance we can smell

2、 The difference of flower fragrance

Because the fragrant oil contained in flowers is different, we can smell different flower fragrance, such as rose and jasmine. The flavor of these flowers is relatively strong. That is because the aromatic oil in these flowers volatilizes to a great extent, and we can also smell it far away; Osmanthus fragrans and evening primrose are relatively light in taste because the effect of volatilization of aromatic oil in their flowers is not very good, so their taste is relatively light. Some flowers do not contain aromatic oil. For example, the flower of Mantianxing has no taste because it does not contain aromatic oil

3、 Other ways of emitting flower fragrance

Some flowers do not contain aromatic oil, but they still smell very fragrant. Why? Although the plant does not contain aromatic oil, it will produce aromatic oil during its metabolism, so these flowers without aromatic oil can also emit floral fragrance

Another possibility is that this kind of flowers contain glycosomes, which have no fragrance, but will emit fragrance after being decomposed by enzymes. Therefore, this kind of flowers can also have floral fragrance. For example, Begonia flower has floral fragrance because it contains glycosomes. The smell of flowers is not always fragrant, and many flowers are smelly. For example, King flower attracts insects by emitting odor and helps it spread pollen