As one of the "Three Treasures of the Garden", hydrangeas are deeply loved by the flowers of the north and south of the river. The varieties of hydrangeas are even more numerous. However, in the process of cultivating hydrangeas, in addition to watering, temperature, fertilization, what are the precautions? Below, the courtyard tree will talk with you about the precautions for raising hydrangeas.
First, hydrangeas are poisonous
That's right, the hydrangeas we all love are poisonous.
Its poison is mainly present in the stems and leaves, accidentally ingested or the skin is stained with juice, which has certain safety risks. If consumed incorrectly, it can also cause vomiting or diarrhea, especially its flowers and leaves. Therefore, when pruning the hydrangeas, wear gloves to prevent the juice from getting on the skin.
However, the scent of hydrangea is non-toxic, so don't be too defensive about its smell. Of course, people who are allergic to pollen can not raise hydrangeas, because hydrangeas contain more pollen, and light touch will contact pollen, and people with sensitive constitutions will cause redness and itching of the skin.
Second, the hydrangea is delicate and cannot accept strong light exposure
In terms of habit, hydrangeas are short-day plants, belonging to semi-shady flowers, with little demand for sunlight, and the favorite environment is bright scattered light. Specifically, hydrangeas can receive full-day sunlight in winter and spring, prompting them to sprout early and have spirit. In summer and autumn, it is necessary to avoid direct sunlight, to maintain under scattered light, and to accept full sunlight after late autumn.
Everyone's hydrangeas should not be placed in a sunny position, otherwise the large and thin leaves are easily scorched by the sun, and the flowers of the hydrangeas fade quickly in the environment of excessive sunlight and high temperature, affecting the ornamental value. Therefore, when cultivating, it is best to choose the sides of the porch or the edge of the wall, these scattered light areas can make the hydrangeas colorful and dazzling.
Third, the hydrangea blue should be early
Hydrangea bluening generally starts from early spring, when the hydrangea begins to sprout new shoots, it is necessary to apply some fermented and decomposed organic fertilizer to it, or pour some acidic fertilizer water to increase the acidity of the soil. At the same time, add aluminum sulfate to it, and pour 1:1000 aqueous solution of aluminum sulfate on the hydrangeas every ten days or so, until the hydrangeas grow buds, about 40 days, the plant can bloom blue flowers.
In order to facilitate the hydrangea strip blue, quietly tell everyone that now there is something called "bluening agent", is a solid particle state, sprinkle a small handful in each basin before the germination of hydrangeas, and then water normally on the line, the bluening agent will gradually dissolve into the soil, continue to provide aluminum ions to the hydrangeas, and save the trouble of repeatedly adding an aqueous solution of aluminum sulfate.
Fourth, trim the hydrangeas in the summer
Pruning of the hydrangeas is done by mid-August, so that the old branches will differentiate in the autumn, favoring the next year of flowering. Although there are many varieties of hydrangeas, most of the varieties are old branches that bloom. The old branches are to be differentiated in the autumn when the cool and low temperature is cool, and the flower buds that have been differentiated will be cut off too late, which is why many times the hydrangeas do not bloom in the second year.
I am a courtyard tree, dedicated to the garden art around you and me, I hope that future generations can still see the green mountains and smell the flowers.