Hydrangeas with new branches can be pruned not only in spring, but also once after flowering in summer. If you want it to bloom for the second time in autumn, when pruning, cut it from the most full bud point under the flower. Generally, cut off the residual flowers and one or two pairs of leaves under the flowers, and wait until the new buds germinate in autumn before opening.
Extended data
cultivation techniques
Potted hydrangea is commonly used in 15-20cm pots. Potted plants should be fully watered after germination in spring to ensure that their leaves do not wither. During the flowering period from June to July, there should be sufficient fertilizer and water, and apply fertilizer 1 time every half month or use "Huiyou" 2 1-7-7 acid fertilizer.
When the light is too strong in midsummer, proper shading can prolong the flower viewing period. After flowering, the stems are removed to promote the production of new branches. The color of flowers is influenced by soil pH, and the flowers in acidic soil are blue, while the flowers in alkaline soil are red. Change the pot once a year in spring. Prune properly to keep the plants beautiful. ?
operate
Hydrangea likes to be warm and humid, not tolerant of drought, and also avoid waterlogging; Like semi-cloudy environment, not cold-resistant, suitable for growth in fertile, well-drained acidic soil.
The pH of soil has a very obvious influence on the color of hydrangea. Flowers are blue when the soil is acidic. Flowers are red when the soil is alkaline. Hydrangea should be cultivated in acidic soil (pH4-4.5 is appropriate).
Hydrangea likes fertilizer, and it is usually applied once every 15 days in the growing period. In order to keep the acidity of the soil, 1%-3% ferrous sulfate can be added to the fertilizer solution for application.
Regular irrigation of alum fertilizer can make plants grow green; Adding 1-2 times of potassium dihydrogen phosphate in bud stage can make the flowers big and colorful; The application of cake fertilizer should avoid the dog days, so as not to cause diseases and insect pests and damage the root system.
Hydrangea has large leaves and lush foliage, and needs more water. In the spring, summer and autumn of the growing season, water should be poured enough to keep the basin soil moist. In summer, the weather is hot and the evaporation is large. Besides watering enough water, you should also spray water on the leaves every day. Hydrangea's root is fleshy, so don't water it too much to avoid water accumulation in the basin, otherwise it will rot the root.
After September, the weather is getting colder and colder, and the amount of watering should be gradually reduced. Before the first frost is moved indoors, the room temperature should be kept at about 4 degrees. Remove the leaves before entering the room to prevent them from rotting.
Plants should be placed indoors in sunny places in winter, and it is advisable to leave the house after Grain Rain in the second year. Hydrangea is an ideal potted flower with extensive management and few pests and diseases, which is relatively easy to manage and cultivate. ?
Hydrangea, also known as grass hydrangea, blooms from June to July. Flowers are white at first, and gradually become pink or blue, which are spherical and composed of sterile flowers. Bloom is in full bloom, like snowflakes pressing trees, charming and moving.
Dense branches and leaves, fleshy roots and strong adaptability. It can be planted in the corners of family courtyards and patios, and is also suitable for potted plants to beautify balconies and windows.
Main value
Hydrangea was cultivated earlier in China, and it was planted in Jiangnan gardens built in Ming and Qing Dynasties. Parks built at the beginning of the 20th century are also inseparable from the cultivation of hydrangeas. Modern parks and scenic spots are planted in pieces to form a landscape. However, potted viewing of hydrangea is not very common, which brings excellent opportunities for the development and application of hydrangea.
Baidu encyclopedia-hydrangea