Are they all hydrangeas, blue flowers in the flower market, and saffron flowers in their own homes? Acid blue alkali red
Hydrangeas are very familiar to everyone, hydrangea is the most common flowering plant in the flower market, in the spring, summer and autumn of each year, it is the most popular, the hydrangea on the market can reach the four seasons of blooming, because of the reasons for the cultivation and maintenance of greenhouses, in the high temperature, high nutrients, high humidity environment, hydrangeas can bloom all year round, only in this way can we buy flowering hydrangeas in the market all year round.
Greenhouses and our home are completely different two environments, so the hydrangeas we raise at home can only bloom in the summer, and other seasons are basically not flowering, because the temperature in summer is high, and the light intensity emitted by the ultraviolet rays of the sun is higher, so the hydrangeas will flower, and the temperature in other seasons is low, and the hydrangeas will basically not flower.
Hydrangea this plant has a characteristic, you can use ferrous sulfate acidification soil, to change the flowering color of hydrangeas, usually we buy in the market to buy hydrangea flowering is blue, pay attention to friends can go to the market to take a look, of course, there are some hydrangeas themselves bloom blue flowers, limited by varieties, flowering only blue this kind, most of the hydrangeas can be colored.
Buy the hydrangea flowers from the market, after a period of maintenance, when the hydrangeas bloom, you will find that the original flowers are red, where is the problem? The main reason why the hydrangeas on the market open blue and the hydrangeas in the home open red petals is due to the pH of the soil.
"Acid blue alkali red", is the basic flowering principle of hydrangeas, when the soil is acidic, the petals of the hydrangea flowers must be blue, or biased towards dark purple, after a period of maintenance, the acidic elements in the soil are absorbed by the hydrangea flowers, plus usually we water, the tap water is alkaline, the flower soil is slowly biased towards alkaline, this time the petals of the hydrangeas are red.
Alkaline soil raised hydrangeas, the flowers must be red or dark red, if you want the hydrangeas to bloom blue petals again, we need to use ferrous sulfate with water for irrigation, acidify the soil, so that the pH of the soil is biased towards acidity, and when the hydrangeas bloom again, it is blue.
The most common hydrangea is the endless summer variety, which is also the oldest variety in hydrangeas, and the discoloration is also the most obvious, and the color of this year's flowering may not be changed.
If you want it to bloom purple petals next year, spend a few dollars to buy a pack of ferrous sulfate from the Internet, water it according to the proportion of water, ferrous sulfate goes deep into the interior of the flower soil, and slowly it will be absorbed by the root system of the hydrangea, the acid element will change the color of the hydrangea, and when it blooms in the summer, the petals that bloom must be biased towards blue.