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Symptoms and Control Methods of Hydrangea Anthracnose
[Distribution] Tianjin, Hebei, Liaoning, Henan, Guangdong, Shanghai, Jiangsu, Zhejiang, Fujian, Sichuan. [Symptoms] Mainly occurs on leaves. The lesions initially appear as small brown spots, which after expanding become circular, with edges from purplish-brown to blue-black, and centers from light brown to grayish-white, with concentric rings and whorled small black dots protruding. Lesions vary in size, the small ones only 1 mm, and the large ones up to 10 mm. [Pathogen] The pathogen is a fungus, Colletotrichum hydrangeae (Colletotrichurnhy-dr
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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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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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A Complete Guide to Jasmine Cultivation and Care Methods
Jasmine is commonly propagated by cuttings and layering. For cuttings, they can be taken from April to October, with rooting fastest in summer. Cut a mature one-year-old branch 10 cm long, remove the lower leaves, and insert it into a sand bed; it will root after 60 days. For layering, select a longer branch, at the 15 cm point, preferably making a gentle wound below a node, and bury it in a pot filled with sandy soil, keeping it moist regularly; it will root after 2-3 weeks, and after 2 months it can be cut away from the mother plant to become a new plant. Watering is key in cultivation. In midsummer, water every morning and evening. If the air is dry, spray water to increase air humidity, and never water at noon.
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A Detailed Guide to the Cultivation Methods and Care Techniques of African Jasmine
African jasmine easily adapts to unfamiliar environments and can be grown in courtyards and on balconies. Its branches are the color of jade, its leaves glossy and shining, and its flowers slightly fragrant, with an elegant shape, each having five petals, arranged in umbels clustered at the tips of the flowering branches. The flowering period is very long, blooming in both winter and summer, with the most splendid blooms in spring and summer. At dawn or dusk, a faint, elusive fragrance refreshes the heart and mind. African jasmine is an evergreen (climbing) shrub or small tree of the genus Fagraea in the family Loganiaceae, native to southern China and countries such as Southeast Asia. Its original name is Chinese Fagraea (see "Iconographia Cormophytorum Sinicorum"
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What are the methods for controlling pests and diseases of jasmine?
Diseases of jasmine during its growth period include: jasmine stem rot and southern blight; pests include: jasmine leaf borer, scale insects, and carmine spider mite. (1) Jasmine stem rot. This disease occurs at the base of the stem. In the early stage, the lesions are brown spots with a water-soaked appearance. The lesions extend longitudinally into streaks. The edges are dark brown, the interior grayish-brown; in the later stage, the lesion tissue rots and splits longitudinally, and black granular bodies appear. This disease occurs year-round during greenhouse maintenance, and is especially severe in early spring. It also occurs in August-September when plants are maintained outdoors. High temperature and humid conditions
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What are the asexual propagation methods for lily bulbs?
(1) Natural bulblet propagation method: naturally divide the mother bulb into individual bulbs (ranging from 2-5, each containing one growth point), plant them in the field and cultivate for one year, and they can grow into larger new bulbs, then plant and propagate again, and by repeating this process, seed bulbs meeting the standard can be obtained. The disadvantages of this method are slow increase in quantity, high seed bulb usage, and serious disease and variety degeneration; the advantage is shortened propagation time, as seed bulbs can be obtained in 1-2 years. (2) Bulblet (daughter bulblet) propagation method: plant small daughter bulblets into the
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How to increase the yield of lilies? Master these four methods
Lily, also known as white lily and lily garlic, has effects such as moistening the lungs and stopping cough, clearing the heart, and calming the mind. It is an economic crop suitable for both medicinal and vegetable use, with relatively high planting benefits. Under conventional cultivation and management, farmers can adopt the following four methods to achieve the goal of increasing yield and efficiency. 1. Chemical regulation method. When lily seedlings grow to 18-20 cm tall, carry out chemical regulation: per mu use the plant growth regulator paclobutrazol 20-50 grams, or mepiquat chloride 10-15 grams, or daminozide (B9) 5-10 grams, or mepiquat chloride 5-10 grams, choose any one, add water 50-
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Lily Cultivation Methods: A Detailed Guide to Bulb Cultivation Techniques
Bulb cultivation Cultivated lilies generally use asexual propagation. The seed material is the small bulb, called the "bulb". First the bulb is cultivated, and then the bulb is used to cultivate commercial lilies. For some types, such as Yixing lily, the bulbs used for planting are obtained by peeling off the scales of finished lilies and planting them, so there is no need to cultivate special bulbs. Methods for cultivating bulbs include: 1. Small bulb cultivation of bulbs Small bulbs, namely small bulbs, are formed by axillary buds. At harvest, the small bulbs are collected and stored separately; those of 30-50 g are large bulbs and can be directly used as 5
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