-
Key points of seedling-raising techniques for Japanese white pine, rhododendron and other seedlings
Seedling raising of Japanese white pine, rhododendron, etc. For Japanese white pine, in autumn mix the seeds with coarse sand at 1:5, put the mixture in a flower pot and bury it outdoors in a sunny, well-drained spot, and sow around Qingming Festival. Broadcast sow on the seedbed, cover with 1 cm of sandy loam, and generally the seedlings can emerge completely in two months. If the quantity of seeds is very small, soak the seeds in warm water in spring; after 2-3 days, carefully break open the outer seed coat, sow in pots at 25°C, and seedlings can emerge in about 10 days. For rhododendron, when propagating wild rhododendrons or breeding new hybrid cultivars, the sowing method is often used to raise seedlings. Rhododendron
-
Rhododendron species introduction: What kind of plant is the Chinese azalea (Rhododendron molle)
It belongs to the subgenus Rhododendron subg. Pentanthera. Deciduous shrub, 0.5-2 m tall. Branchlets slender and sparse. Covered with soft hairs and bristles. Leaves papery, tender green, long elliptic-lanceolate, 5-12 cm long, 2-4.5 cm wide, apex obtuse, with a protruding tip, base cuneate, margins ciliate, petiole, leaf surface and leaf underside all covered with soft hairs. Terminal racemose umbel, with 5-9 flowers, blooming in early May, about 10 days later than the red azalea (Rhododendron simsii), flowering before leaves or flowers and leaves appearing together, corolla broadly campanulate, 5-6 cm in diameter, golden yellow to orange-yellow
-
What are alpine rhododendrons, Rhododendron hybridum, and foreign rhododendrons?
Scientific name: Rhododendronhybridum. Aliases: Rhododendron hybridum, foreign rhododendron. Family and genus: Ericaceae, Rhododendron. Morphological characteristics: The alpine wintergreen is an evergreen shrub, about 20 cm tall, growing on mid- to high-altitude mountains. The leaves are oblanceolate, smooth on the surface, with serrated edges, and alternate. The stems are red, erect or growing along the ground. The leaves are clustered at the branch tips, hairless on the leaf surface, with dense reddish-yellow woolly hairs on the underside. The flowers are terminal, in racemose umbellate inflorescences.
-
How to grow alpine rhododendrons? A detailed guide to cultivation and management techniques
Alpine rhododendrons have very strong adaptability and can grow at normal temperatures. In Europe, they are mostly produced outdoors, and where conditions allow, greenhouses can be used for production. At different temperatures, the growth of alpine rhododendrons varies considerably. The optimum temperature for alpine rhododendrons is 15-20°C. At a maximum temperature of 35-39°C, growth is inhibited, and measures such as shading, cooling and ventilation should be taken promptly. The temperature is best kept within 30°C. When it exceeds 35°C, alpine rhododendrons will suffer damage to varying degrees, which is unfavorable for flower bud differentiation. Although alpine rhododendrons can generally tolerate low temperatures of -20°C, the temperature should be kept above 10°C as far as possible, especially to protect seedlings from freezing.
-
Detailed Explanation of Key Techniques for Alpine Rhododendron Cultivation and Management
When the seedlings you purchased arrive at the greenhouse, they are usually quite fragile and prone to damage during transport, so careful handling by the grower is very important. Strengthen management from the very beginning, and many problems later on can be avoided. 1. First potting: If you purchased plug seedlings, it is best to use rigid plastic pots 8-10 cm in size. Do not press the substrate in the pot too firmly, so as to allow aeration, and maintain a certain level of moisture. Do not prune at potting time; wait until the root system is well developed and the terminal buds begin to grow before pruning.
-
Characteristics of Rhododendron sparsiflorum and an Introduction to Its Planting and Care Methods
Family and genus: Ericaceae, Rhododendron genus. Morphological characteristics: An evergreen small shrub. It can reach a height of 1.6 m. The leaves are elliptical or oblong, with pale yellow, straw-colored, or nearly colorless scales. The inflorescence has 1-3 (5) flowers; the flowers are pale purplish red. The flowering period is from May to August. It prefers cool and moist conditions and acidic, fertile soil, and is slightly shade-tolerant. It is a plant endemic to Tibet. It is distributed in southeastern Tibet, mostly growing under mixed coniferous and broad-leaved forests or dark coniferous forests and at forest edges at an altitude of 3000-3600 m. The flower color of this species varies, including pink, magenta, pale purplish red, and white.
-
Introduction to Rhododendron scopulorum and Its Planting and Care Methods
Family and genus: Ericaceae, Rhododendron. Morphological characteristics: evergreen shrub. Height l-4m. Leaves obovate to oblanceolate, with small scales on the underside. 3 flowers terminal, corolla white with pink, about 4.5cm long. Flowering period April-May. Prefers warm and humid conditions, likes light, slightly tolerant of poor soil. A plant endemic to Tibet. Produced in the Yarlung Zangbo River gorge, growing only in scrub at the forest edge on mountain slopes at an altitude of about 2000m.
-
Leaf scorch on Japanese aralia (Fatsia japonica), spotted laurel (Aucuba japonica 'Variegata'), and rhododendron
Japanese aralia and spotted laurel are shade-loving plants that cannot tolerate strong sunlight. The scorching sun of midsummer often severely burns their young leaves, causing the young leaves to curl, turn yellow, and wither, or the leaves to scorch, seriously affecting plant growth. Certain pathogenic fungi then seize the opportunity to invade, further causing infectious diseases, and now fungal fruiting bodies can be seen on some of the lesions. Rhododendron is a semi-shade-loving plant, and the cause of its leaf scorch is similar to the above. Young leaves are more severely affected, and this disease causes a large amount of abnormal leaf drop in the plants. Control methods: (1) Because midsummer often brings sudden, relatively strong wind and rain,
-
Detailed Explanation of Seed Propagation Techniques for Rhododendron schlippenbachii
The wild cold-resistant Rhododendron schlippenbachii naturally grows on mountains in Kuandian, Fengcheng and other places, and has adapted to the cold, humid, and slightly acidic soil environment on the mountains. It is extremely difficult to survive when introduced down the mountain for transplanting. Garden science and technology personnel made many efforts but did not succeed. Since 1998, we have conducted experiments on down-mountain transplanting, cutting propagation, and seed propagation of Rhododendron schlippenbachii, and only the seed propagation method succeeded. The seedling plants of Rhododendron schlippenbachii propagated by seed have well-developed root systems and grow quickly, but they need to be cultivated for 5 to 6 years before the seedling plants can enter the flowering period. 1. Seed collection in October
-
Rhododendron
Rhododendrons are among the world's most famous ornamental flowers, blooming every spring with graceful form, brilliant colors, and richly varied petals; they flower uniformly and have a long blooming period. In nature, rhododendrons can form magnificent landscapes. "Why seek famous gardens to view the spring breeze? Mountain flowers along the way never weary the eye. Day after day the Jin River displays its brocade, while the clear stream mirrors the red azaleas in reverse." These are lines of poetry people use to praise the rhododendron. Besides being ornamental, rhododendrons also have certain medicinal value. The flowers, leaves, and roots can all be used as medicine. The flowers contain anthocyanins and flavonols, and have the functions of promoting blood circulation, regulating menstruation, and dispelling wind-dampness.
条件筛选