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What are the symptoms of crown gall in geraniums?
Symptoms of crown gall in geraniums: it occurs mainly at the root crown, with sporadic cases also on lateral roots. At the affected sites, galls of various sizes and shapes form. They are usually spherical or flattened spheres, and may also join together into irregularly shaped small primary galls, grayish white or flesh-colored, soft in texture, with a smooth surface, later gradually turning brown to dark brown and becoming lignified gall-like growths. The surface of the lignified galls is rough or uneven, and cracked. Affected plants have poorly developed root systems, few fine roots, and slow growth; in severe cases the leaves turn yellow and drop early.
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What are the control methods for crown gall disease in geraniums?
Control of crown gall disease in geraniums: 1. Before planting, find and pull out diseased plants. When necessary, disinfect the stem base of the seedlings by first soaking in 1% copper sulfate for 5 minutes, then transferring to 2% lime water for 1 minute. 2. Choose soil free of crown gall disease as nursery soil and potting soil. For potted plants that develop the disease, replace with disease-free soil. 3. For plants in the early stages of the disease, use a knife to cut away the gall, then apply lime sulfur mixture residue or Bordeaux paste to the wound, or apply methyl-acetic-iodine solution (50 parts methanol, 25 parts glacial acetic acid, 12 parts iodine flakes) to the gall, which can heal the affected area.
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Geranium Winter Care Methods and Maintenance Tips
Geraniums like warmth and fear cold, so in winter special attention should be paid to cold and frost protection. When growing geraniums in northern regions, the potted plants should be moved indoors when Frost's Descent arrives, placed by a sunny window so they receive sufficient light. If light is insufficient, the plants are prone to leggy growth, which affects flower bud formation, and even flower buds that have already formed may wither due to lack of light. If in the south, the potted plants should also be moved to a wind-sheltered, warm, sunny spot after the Start of Winter, which makes it easier for the potted flowers to get more sun and also helps them avoid wind and cold. Indoor temperatures should be maintained at 15°C to 20
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Geranium Cultivation Techniques and Care Management Methods
Varieties: Marerick, Orbit, Multibloom, Elite, OrangeApeal series Germination period ---- Preparation stage All geranium varieties can be grown under the same conditions. (Germination) pH: 6.2-6.5 A pH below 6.0 can lead to tipburn and the inability to absorb sodium, iron and magnesium (13-2-13-6Ca-3Mg). Stage 1 The radicle appears within 1-2 days. Appearance characteristics: At the end of Stage 1,
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Introduction to the Medicinal Value and Benefits of Geranium
[Historical Clinical Records]It was once used to treat cholera and bone injuries, and also had an exorcism effect. [Benefits]Stops bleeding, constricts blood vessels, asthma, liver detoxification, gallstones, kidney detoxification, kidney stones, diuretic, muscle aches, oily skin, revitalizing aging skin, herpes, pale skin, weight loss, promotes scarring, eczema, burns and sunburn, ringworm, irregular menstruation, breast congestion and inflammation, relieves depression and anxiety, drives away demons, tonic, deodorizing, antibacterial, antiseptic, helps quit smoking and drinking. [Precautions]For some
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What are the morphological characteristics of geraniums?
Morphological characteristics of geraniums: plant height 30 cm to 60 cm, the whole plant covered with fine hairs and glandular hairs, with an unusual odor. Stems succulent. Leaves alternate, round to kidney-shaped, usually with a horseshoe-shaped pattern inside the leaf margin. Umbels terminal, with a long common peduncle; flowers come in white, pink, flesh red, light red, bright red and other colors, and there are single-petaled and double-petaled forms, as well as variegated-leaf varieties with white, yellow and purple markings on the leaf surface. The flowering period is from May to June; except for dormancy in midsummer, it can keep blooming if the environment is suitable. It prefers cool conditions, but is not cold-tolerant. It dislikes high temperatures, prefers full sunlight, and prefers well-drained fertile loam
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How to prevent and control bacterial leaf spot in geraniums?
Geranium, also known as zonal geranium, fish geranium, and horseshoe geranium. It is native to South Africa. It prefers cool conditions, fears high temperatures, and is not cold-tolerant. It requires ample sunlight. It is not tolerant of waterlogging but is slightly tolerant of drought, and prefers fertile loam with good drainage. In spring and autumn, when the weather is cool, it is most suitable for the growth of geraniums. In winter, indoors at around 15°C during the day and no lower than 5°C at night, with sufficient light, they can bloom continuously. In hot summers, the plants enter a dormant or semi-dormant state, and should be placed in partial shade with attention to controlling watering. It is resistant to chlorine. Pelargonium plants
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Detailed Explanation of Key Technical Points for Soil, Fertilizer and Water Management of Geraniums
Soil, fertilizer and water management techniques for geraniums: When geranium seedlings reach 12 to 15 cm in height, pinch off the growing tips to encourage side branches. During the high temperatures of midsummer, strictly control watering; otherwise, if the potting soil of a semi-dormant geranium is too wet, the leaves often turn yellow and drop off. During the stem and leaf growth period, fertilize once every half month, but do not apply too much nitrogen fertilizer. If the stems and leaves grow too vigorously, stop fertilizing and appropriately remove some leaves, which helps flowering. During the flower bud formation period, apply an additional phosphorus fertilizer once every 2 weeks. Or use "Huiyou" 15-15-30 special fertilizer for potted flowers. In order to control the height of the excavated plant and achieve
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Key Production and Cultivation Techniques for Geraniums
1. Timing Schedule For the zonal geranium series, if grown under suitable conditions in northern regions, the time from potting up rooted cuttings to flowering is: Pot diameter (cm) Weeks 10 7-8 13 9-10 15 11 17 14 Under warm southern conditions, the growing period can be shortened by 1-2 weeks. Climbing series If growing rooted cuttings, pinch 2-3 weeks after potting up: Pot diameter (cm) Weeks 10 11-12 13 13-14 1
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Detailed Explanation of Geranium Cutting Propagation Methods and Techniques
When propagating geraniums (Pelargonium) at home by cuttings, because their stems are fleshy and contain a lot of water, rotting often occurs, affecting the survival rate. For this reason, in practice the author combined certain improvements with heavy pruning after flowering, so that when cuttings are taken at that time, the survival rate is noticeably improved. The specific method is as follows: choose thick, strong branches, and from the stem tip downward, every 4 to 6 leaves, or measuring a length of about 7 cm to 10 cm, down to the height of the usual heavy pruning after flowering, plan in advance the division into several cuttings. Then, at 0.5 cm below the stem node, care
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