1. The feeding method of hydrangea likes to be warm and humid, and it is not tolerant of drought and avoids waterlogging; Like semi-cloudy natural environment, not tolerant of low temperature, suitable for growth and development in acid-rich soil layer with good drainage pipeline. The pH of soil layer is very unfavorable to the pattern of hydrangea. When the soil layer is acidic, the flowers are dark blue. When the soil layer is alkaline, the flowers are bright red.
Hydrangea should be planted in acidic soil (pH 4-4.5). Hydrangea likes fertilizer, and during its growth and development, liquid fertilizer for pancakes is generally applied once every 15 days. In order to keep the acidity of the soil layer, 1%-3% aluminum sulfate can be used in the fertilizer solution. Regular irrigation of alum fertilizer can make the main stems and branches green; Topdressing 1-2 times potassium dihydrogen phosphate in bud stage can make the flowers big and colorful; The use of peanut bran should avoid the dog days to prevent diseases and damage to the roots.
Hydrangea has thick leaves, lush foliage and large water consumption. In the spring, summer and autumn of the growing season, water should be poured to keep the bonsai soil moist. It is hot in summer, and the water surface evaporates greatly. Besides watering enough water, water the leaves every day. Hydrangea roots are fleshy, so don't water them too much. Avoid storing water in pots, or the roots will rot. After September, the temperature will gradually cool, and the irrigation amount will gradually decrease. Before defrosting, move indoors and keep the indoor temperature at 4 degrees. Remove the leaves before entering the house to prevent them from rotting. Plants should be placed indoors in sunny places in winter, and it is advisable to leave the room after the vernal equinox the following year.
2. The propagation of hydrangea is suitable for germination in early spring. When inserting fiber, first pour the mother plant out of the pot, shake off most of the old cultivated soil, expose the tender buds, dissolve the twisted root system, and minimize the root system damage. Use a sharp knife to cut the connecting part between the heading seedling and the mother plant with laser and plant them separately.
It can be used all year round. Select strong and semi-lignified branches, cut the lower phloem near the node with a knife, wrap the cut part with wet moss, peat soil or molding soil, and wrap it with plastic film outside, and bind it left and right. If the temperature is suitable, 1 month can take root. Break the decorative strip below, remove the plastic film and remove the basin.
Generally in May-June, combined with early spring pruning and post-flowering plastic surgery. Select a branch. The length of woody or semi-woody disease-free branches is 65,438+00 ~ 65,438+05 cm. Leave 2 ~ 3 leaves at the top, and cut off 65,438+0/3 ~ 65,438+0/2 respectively. Soak in ABT rooting agent 250 mg/L light calcium carbonate slurry, and then insert it into river sand, ceramsite or pottery.
3. Appreciate the efficacy of hydrangea. Hydrangea is a famous ornamental tree species in the Yangtze River basin, with large inflorescences and diverse patterns. It was white at first, then light green, and gradually turned into dark blue or light pink, which was very strong. It is a very, very ornamental flower plant. Decorate the home. Hydrangea has beautiful color and long flowering period. Two plants are planted opposite each other at the entrance of the home gate. They line up along the building. They are clustered in a corner of the courtyard, and the actual effect of decoration and cleaning is very ideal. In addition, planting two pots of plants to decorate the balcony, life balcony and guest rooms is unique and plays a great role in the clean layout of the home.
Medicinal value. Hydrangea can be viewed independently, can also be used as a potted plant to decorate the home, and can also be used as medicine. Hydrangea is bitter, slightly pungent, cold and toxic, and has the effect of treating dengue fever, renal cystic wind, sore throat and other diseases. After careful pruning, hydrangea has large inflorescence, many patterns and long flowering period. It is particularly beautiful in the process of opening up to the outside world. Whether it is independent appreciation or home decoration, the actual effect is very good. People who like to put potted flowers and green plants at home can also consider hydrangea.