Blue Emoy Ji is the earliest from the Netherlands, is a processed flower. Multiple hybridization and research by the roses and roses. It is dyed with a staining agent and ambassium that is harmless to the human body. When the white rose is fast to maturity, put it into the container containing the colorant, so that the flower is absorbed, and the toner is inhaled.
According to flowers experts, there are very few blue roses that have naturally growing in the world. Now the “blue demon” sold in the market is the product after artificial staining.
The more regular “blue enchantry” is the floral growth stage start staining, and the color can be evenly attached to the petals, which looks more nature.
Mainly in the North China, Northwest and Southwest, Japan, North Korea and other places have been distributed. It is also widely planted in many other countries.
For climate, soil requirements are not strict, loose, fertile, rich in organizational matter, microalic acid, and good drainage.
Sex warm, sufficient sunshine, air circulation environment.
The most suitable temperature is 10 ~ 26 ° C. Winter temperature is below 5 ° C to go to sleep. Some varieties can be cold -15 ° C.
Other aspects such as pests and diseases are similar to roses.