It is usually mixed with a dye and a dyeing auxiliary to make a colorant and spray dye flowers, originally from the Netherlands. According to flower experts, there are few natural blue roses in the world, and the "blue enchantress" sold in the market is the product of artificial dyeing.
The basic shape is similar to that of a rose, with ten to twenty petals. The more formal "blue enchantress" begins to dye in the growth period of flowers, and the color can be evenly attached to the petals, which looks more natural; Most vendors directly dye ordinary white roses blue after picking them, which is unnatural and easy to fade.
Introduction to growth environment:
Although the blue witch has no strict requirements on climate and soil, loose, fertile loam with rich organic matter and good acid water is more suitable. Sexual preference is warm, sunny and ventilated environment. The optimum temperature of most varieties is 15 ~ 26℃ in the daytime and 10 ~ 15℃ at night. In winter, when the temperature is lower than 5℃, it goes into hibernation.
Some varieties can tolerate low temperature of-15℃ and high temperature of 35℃; When the temperature keeps above 30℃ in summer, plants enter a semi-dormant state and grow poorly. Although it can bear buds, it has few petals and dull color, which loses its ornamental value.