Hydrangeas love the warm and humid climate. Not tolerant of cold and drought, hi shading avoid direct light. Under natural growth, flower buds differentiate at a cool night temperature of 18°C ​​under short days. If you want to make flowers blue, you should master the ratio of medium nitrogen, low phosphorus, and high potassium when fertilizing. To make it appear red or pink, fertilization should be carried out according to the proportion of high nitrogen, high phosphorus, low potassium, medium pH value between 6.0 ~ 6.5. 1. Breeding practice. The propagation of hydrangeas is carried out in spring and autumn, but it is best to end in late spring and early summer (from the end of April to July). At this time, the flowering period of hydrangea has basically ended in May, and the new branches and leaves have been grown after the leaves have been removed and pruned. Buds. At this time, the top buds can be cut for cuttings. Cuttings can also be carried out from late September to October. After the early spring hydrangeas have been trimmed and culminated with buds for cuttings, many new branch buds are sprouted. At this time, due to the cool weather, it is suitable for cutting propagation. 1 In addition to brick-built nursery beds, in order to facilitate the management of the move, a foam box can be used as a seedbed. After the bottom of the box is cut into several openings, the mouth is covered with tiles and filled with a layer of coarse sand. Cultivate the soil (3 parts of sand, mix 2 parts of sterile mountain soil), smooth it and cut it. Cut the cuttings into 10 to 15 cm sections, cut off the lower leaves of the top branches, leaving only the top 2 to 3 leaves. After the cutting, the cuttings are bundled and well-distributed. In order to make the cutting wounds heal and heal roots at an early date, the cuttings of the leveling are soaked with strong rooting agent (about 0.2 kg per package) and immersed for 5 to 10 minutes. The soil is pressed tightly with fingers so that the cuttings are tightly integrated with the soil. Then use a watering pot to drench the water once. Afterwards, as long as the bed soil is wet, it is not necessary to water, but it is often necessary to spray on the cutting blades and keep the environment around the bed moist. In case of strong sunshine and strong sunshine, shady shades must be used. In this way, under careful management, the wound began to heal in about 25 days, and new roots grew on the branches. 2 on pot cultivation conservation. The hydrangeas are carefully managed after 25 days, and they have already survived. From the top buds, new leaf buds grow upward. At this time, they must be planted and managed. Cultivation of cultivated hydrangea cultivated soil with coniferous soil (higher acid content) plus tannin, nitrogen, phosphorus, and potassium (according to the amount of coniferous soil) compound fertilizer and soil mixing and stacking fully fermented for more than half a year, before opening the number of drying It can be used on day. After the seedling survives, the top branch grows to a length of about 10 centimeters and can be topped for the first time to promote the germination of new leaf buds in the lower part. When the number of shoots that grow after the shoot grows to a certain length, a second topping is performed, and Its growth is balanced and lush. When the main stems are thick, only 3 to 4 shoots are allowed to grow. After survival from the upper basin to the branching period, fertilization is required 3 to 4 times, and potassium dihydrogen phosphate is the main fertilizer. 2. Promote flower bud formation. In the case of potted hydrangeas, only 3-4 shoots are left after pruning and the trimming of the branches is already in mid-November, because the hydrangeas are short-day plants that must be moved into the plastic shed to facilitate their entry into the flower bud differentiation stage. During the day, when the temperature is high at noon, the plastic film under the greenhouse shall be opened for ventilation. At night, the temperature shall be kept at 18°C. Most of the hydrangea varieties stop growing at this temperature growth point and turn from vegetative growth to reproductive growth. In this process, because hydrangea is a broad-leaved plant, special attention should be paid to the supply of water. Normally, when basin soil is dry, it must be irrigated in time, and water must be sprayed to the leaves to keep the environment within the greenhouse moist. Potassium dihydrogen phosphate was used for water distribution every 10 days during the management period. Potassium dihydrogen phosphate and a small amount of ferrous sulfate were sprayed to the leaves every other week using a sprayer. About 65 days, flower buds differentiated and formed. In the following year, the hydrangea can be removed from the greenhouse and placed in the sun for management. At this time, the temperature gradually warms up, and the most suitable for the buds of hydrangea flowers is the maturity of the flower buds and petals. About a day, the differentiation of the female and stamens is completed, which is when the hydrangea blooms in full bloom. Our natural sweetener is extracting from natural plant. Like inulin powder, there are jerusalem artichoke and chicory sources. Monk fruit extract has sweetness of hundreds times than that of sugar. 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