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Diagnosis and Treatment of Oleander Poisoning in Cattle
Oleander is an ornamental plant, and many local farmers grow it. According to relevant literature, oleander contains cardiac glycosides, which have an irritant effect. After animals consume it, it can cause hemorrhagic gastroenteritis, increased sodium and calcium ion concentrations in myocardial cells, and decreased potassium ion concentration, thereby causing a series of pathological phenomena in animals such as atrial fibrillation and cardiac arrhythmia. I. Incidence Situation In July 2002, a 3-year-old yellow cow in Gumudi Town, Miquan City, consumed oleander in the yard. Two hours later, the cow showed abdominal pain, restlessness
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Harvesting and Fresh-Keeping Methods for Outdoor Oleander Cuttings
[Other Chinese Names]Dajiezhong, Jiaochudong, Jiujiezhong, Juna, Liuyetao, Shuigancao[Family and Genus]Apocynaceae, Nerium[Place of Origin]Nepal, India, Iran and other places[Plant Characteristics]Oleander is an evergreen shrub or small tree. Plant height 5-6 m. It has milky sap. Simple leaves are whorled or opposite, linear-lanceolate, 10-25 cm long, entire, leathery.[Cutting Harvest]The harvested part is the current-year branches of oleander. Harvesting should be carried out from May to July each year. In order to obtain ideal
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Oleander Planting and Cultivation Methods and Key Technical Points
1. Planting time is in spring. Open-field cultivation in the Yellow River basin and areas to its south; container cultivation in cold northern regions, overwintering indoors. When transplanting, the plant must be planted with a soil ball. The planting site must be sunny and free of standing water. Summer transplanting is also possible, but some branches must be pruned off and an appropriate number of leaves cut away to reduce water transpiration and promote survival. For container plants, repot once every 2-3 years, using a growing medium of 6 parts leaf mold and 4 parts river sand; before planting, a horseshoe chip can also be placed at the bottom of the pot as a base fertilizer. Before planting, shorten the branches
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Detailed Explanation of Oleander Cultivation and Management Methods and Technical Key Points
Oleander, also known as yangtao, bannianhong, or liuyetao, originated in Iran and India. It is an evergreen shrub or small tree of the Apocynaceae family. Dwarf types suitable for pot cultivation reach 60-80 cm in height, while tall types can grow to over 3 m. It blooms from late May each year, and the flowering period is extremely long, lasting until October. Flower colors include peach red, pink, yellow, white, and others, with peach red being the most common. The flowers are double-petaled and have a delicate fragrance. Every year during the flowering season, green leaves set off red flowers, gorgeous and elegant, offering both foliage and flowers to admire, combining the beauty of peach and bamboo.
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How to control oleander aphids? A full breakdown of practical methods
Oleander aphid, also known as the kapok aphid, belongs to the order Homoptera, family Aphididae. It is distributed throughout southern China, as well as in various countries of Southeast Asia, Africa, and South America. Damage symptoms: nymphs or aphids attack oleander, stunting the growth of affected new shoots, turning the upper and lower leaves black, and causing flower buds and flowers to develop incompletely and open abnormally, reducing ornamental value. Morphological characteristics: the wingless parthenogenetic female is oval in shape, 2.3 mm long, yellow like a banana peel. The frontal tubercles are raised, higher than the median frontal tubercle; the antennae are dark, with coarse tile-like sculpturing; the rostrum reaches the middle coxae. The cornicles are long and tubular, dark
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What are the morphological characteristics of oleander?
Evergreen shrub or small tree. Plant height 1.5-6 m, upright growth habit. Stems smooth, strongly branching; old branches grayish-brown, new branches purplish-brown or green. Leaves simple, whorled or opposite, lanceolate, 10-25 cm long, leathery, entire margins, midrib prominent; a small amount of white milky sap present in both branches and leaves. Cymes terminal; corolla funnel-shaped, 5-lobed, flower diameter 3-5 cm, in colors such as pink, deep red, red, and white. Single or double flowers, with a distinctive fragrance. Flowering period June-October. Follicle, elongated horn-shaped. Fruit ripening period December
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What kind of growing environment does oleander like?
It likes sunny, warm and humid environmental conditions. It is relatively cold-tolerant, slightly shade-tolerant, slightly alkali-tolerant, tolerant of drought and poor soil, and intolerant of waterlogging; it has a certain resistance to toxic gases such as smoke and dust and sulfur dioxide. It is suitable for growing in fertile, loose, well-drained slightly acidic to slightly alkaline soil. Light and temperature: potted oleander needs to be brought indoors to overwinter, with the room temperature kept above 5°C, placed in a spot by a window with full sunlight. Generally it is moved into the greenhouse around October 20 and moved out of the greenhouse around April 20. After being moved out, it should first be placed in a wind-sheltered, sunny spot, then gradually
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Introduction to Oleander Varieties: Get to Know the Common Oleander Varieties
1. White-flowered oleander is a cultivar of oleander. The flowers are white and semi-double. The leaves are relatively small, and both the branches and the stems are pale greenish-white. 2. Variegated oleander is a cultivar of oleander. The flowers are red and single. The leaf surface has markings. 3. Pale yellow oleander is a cultivar of oleander. The flowers are pale yellow and single. 4. Double-flowered oleander is a cultivar of oleander. The flowers are red and double.
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How to grow potted oleander? Master these care essentials
Oleander, also known as willow-leaf peach and half-year red, is an evergreen large shrub of the genus Nerium in the dogbane family Apocynaceae. When potted, it is often trained into a small tree form, with a plant height of 2 m to 3 m. The stem is upright and smooth, old branches are grayish brown, young branches are green, with strong branching ability, mostly growing in a three-forked pattern. The leaves are lanceolate, in whorls of 3, thick and leathery, with short petioles, 10 cm to 25 cm long, with sharp tips and wedge-shaped bases, dark green on the surface and light green on the underside, with a prominent midrib and entire margins. The petioles and inflorescence stalks are purplish red, and there is a small amount of milky sap in the branches and leaves
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What are the values and uses of oleander?
The oleander has a rounded, neat plant form, with leaves like bamboo and willow, and flowers that resemble peach blossoms yet are not peach blossoms. Its flower colors are fresh and lovely, and it stays evergreen all year round, giving it considerable ornamental value. "Its leaves are sparse like bamboo, its blossoms tender like peach; the country folk never tire of looking at it, facing the tree with a cup of wine." From this ancient poem it can be seen that the oleander has been an ornamental flower deeply loved by people since ancient times. The oleander is now grown in nearly 90 countries, and because it grows quickly it is regarded as a fast-growing landscaping tree species. Algeria has even designated it as its national flower. The stems and leaves of the oleander contain oleander cardiac glycosides, organic substances from which cardiotonic agents can be extracted, with diuretic, analgesic, and phlegm-clearing and asthma-relieving effects
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