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A Complete Analysis of the Biological Characteristics of Hydrangea
Hydrangea (Hydrangea macrophylla) originated in China and Japan. It prefers a warm, humid and semi-shaded environment. The optimum growing temperature for hydrangea is 18-28°C, and the winter temperature should not fall below 5°C. Flower bud differentiation requires 6-8 weeks at 5-7°C; a temperature of 20°C can promote flowering, and maintaining 16°C after the flowers appear can extend the flowering period. However, high temperatures make the flowers fade quickly. The potting soil of hydrangea should be kept moist, but it should not be watered too much; especially in the rainy season, pay attention to drainage to prevent root rot caused by waterlogging. In winter, indoor potted hydrangeas are best kept slightly dry.
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Key Points of Commercial Forcing Cultivation Techniques for Hydrangea
After undergoing the necessary cold treatment, hydrangeas are usually shipped and sold from late autumn to early winter. Like dormant plants, they can be planted in 4-6 inch pots, or pre-planted in 4-inch pots like bare-root plants. Newly introduced plants should first have their root growth stimulated (about 2 weeks) before final planting. The optimum temperature for hydrangeas to begin growing is a soil temperature of 15.6°C-16.7°C, while maintaining a slightly lower air temperature of about 15°C, which promotes root activity before bud break. Keep the soil slightly dry before transplanting
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Detailed Explanation of Hydrangea Cutting Propagation Methods and Technical Key Points
Although hydrangea has a long history of cultivation, it remains continuously popular. However, in recent years, due to aging varieties and serious illegal propagation, the prices of finished flowers have been relatively low. The breeding of new hydrangea varieties has also, to some extent, increased market demand and enhanced the competitiveness of growers. The upcoming months of March to May are the main planting period for hydrangea seedlings, in preparation for next year's New Year's Day and Spring Festival market. Below is a focused introduction to some management key points after the arrival of rootless hydrangea seedlings for New Year's Day marketing. 1. Preparation before arrival 1.
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A Detailed Guide to the Care and Propagation Techniques of Hydrangea
Hydrangea, also known as grass hydrangea, blooms from June to July. The flowers open white at first, gradually turning pink or blue, forming large spheres made up of sterile flowers. When the flowers are in full bloom, they look like snow weighing down the branches, charming and lovely. Its branches and leaves spread densely, and its roots are fleshy; it is highly adaptable, able to be planted in the ground in a family courtyard or a corner of a patio, and also suitable for container planting to add color to balconies and windows. Hydrangea prefers semi-shade and a moist environment, and is not very cold-tolerant. In the intense heat of summer, avoid direct sunlight, otherwise the leaves easily scorch, wither and turn yellow; it does not tolerate excessive dryness, and grows best in humus-rich
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How to Propagate Hydrangea? A Detailed Guide to Hydrangea Propagation Techniques
Hydrangea, also known as "Xiuxiu" (hydrangea). It is a plant of the genus Hydrangea in the family Saxifragaceae. It prefers shaded, moist and warm environments, and its suitable growing temperature is generally 15°C to 27°C. In hot summers, cooling can be achieved through measures such as shading, enhancing ventilation and light penetration, and spraying water on the leaves. It requires loose, fertile, well-drained and slightly acidic soil. Hydrangea can be propagated by methods such as cuttings, division and layering, but cuttings are mainly used. The various methods are described below: 1. Cutting method: Cutting propagation can be carried out all year round in a greenhouse.
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Detailed Explanation of Key Techniques for Forcing Hydrangea macrophylla into Bloom
Hydrangea macrophylla, also known as hydrangea, powder-ball flower, or zi yang hua, is an ornamental shrub in the family Saxifragaceae, genus Hydrangea. Potted varieties grow about 30cm tall, with opposite leaves and flower heads up to 20cm in diameter, nearly spherical, borne at the tips of branches, in white, pink, and blue-purple; the flowering period is from May to July, and with proper cultivation it can be extended to the end of September. Its flowers are large, brilliantly colored, and gracefully shaped, making it highly favored by people. The market development prospects are broad. I. Characteristics Hydrangea macrophylla is native to China and has now become a famous ornamental woody flower in the Yangtze River Basin. Hydrangea macrophylla has relatively strong adaptability, belonging to
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Symptom Identification and Control Methods of Hydrangea Viral Disease
Also known as hydrangea ringspot virus disease and hydrangea mosaic disease. Found sporadically in Beijing, Henan, Hebei and other places. It harms hydrangeas, making the plants short and small, with small and pale flowers, reducing their ornamental value. In some places, horticultural cultivation appreciates its diseased beauty, and it is called variegated-leaf hydrangea. Symptoms are a systemic disease; infected plants are thin and weak as a whole, with pale colors in branches, leaves and flower clusters, appearing pale green under a light pinkish-white covering; the leaves have irregular pinkish-white patches mixed into the pinkish-green, with clear boundaries separated by leaf veins; the leaf margins are white. In early spring and winter in the greenhouse
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Hydrangea Pest and Disease Control Methods and Key Technical Points
When humidity is high, temperatures are high, and ventilation is poor, the plant is prone to aphid damage. Control methods: ventilate promptly. In severe cases, spray with 1500-fold diluted Mieyaling solution. In mild cases, they can be removed by hand with a brush. Spraying with cigarette butt or chili pepper water is also effective. For its control methods, refer to those for roses.
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Detailed Guide to Hydrangea Pest and Disease Control
Hydrangea Pest and Disease Control Hydrangea green petal disease symptoms: plants are stunted and shrunken; inflorescence color fades, petals usually turn pale yellow-green, flowers are small or absent. Transmission route: it is caused by infection with mycoplasma-like organisms (abbreviated MLO). MLO mainly survives and overwinters on various perennial plants such as daisy, oxeye daisy, greater plantain, fleabane, corn marigold, and sow thistle, and is mainly transmitted to cause damage through leafhoppers from these plants. In addition, dodder can also transmit the virus. Control methods 1. Promptly remove and destroy diseased plants to reduce
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How to dwarf a hydrangea? Let me teach you a simple method
Hydrangea, also known as bigleaf hydrangea or pink ball flower, is an evergreen small shrub in subtropical and tropical regions. It prefers semi-shaded and humid environments. During the flowering period, the flowers bloom profusely, and their color changes with the pH of the soil: when the soil is alkaline, the flowers are pale red; when the soil is acidic, the flowers are blue, making them extremely attractive. The normal flowering period of potted hydrangea is from May to August. If no treatment is carried out and it is allowed to sprout and grow freely, its plant height can reach 50-70 cm, it is prone to lodging in the pot, and the flowers are relatively small, which affects its ornamental value. How to make potted hydrangea
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