Rhododendron & Growing Technique

Branch “rhododendron” is there scientific nomenclature is Rhododendron (from the Greek: rhodos, “rose”, and dendron, “tree”), is a flowering branch branch in (family Ericaceae). This is a big branch with about 850-1,000 species and most of the species have brilliant flowers. Rhododendron is the national flower of Nepal. Many rhododendrons are grown as ornamental plants. Some species have a healing effect.

Rhododendron branch is characterized by shrubs and large (rare), the smallest species so long as the 100 cm-high, the largest species, r. giganteum, was recorded as high as 30 m. Leaves arranged spirally; leaf size can range from 1-2 cm to over 50 cm, the exception is r. sinogrande has long leaves 100 cm. Rhododendron can be Evergreen or deciduous tree. In some species, the leaves are covered with scales or hairs. Some species are famous for blooming flowers into the large beam. The mountains have little flowers and leaves and some tropical species that live clinging in the form of mistletoe.

1. Classification:
Rhododendron is the branch has a very wide distribution, appearing in almost all over the northern hemisphere except for dry areas, and extends down to the southern hemisphere in southeastern Asia and Northern Australasia. Degrees the highest species diversity is found in the Himalayan mountains from Uttarakhand, Nepal and Sikkim to Yunnan and Sichuan, in the other mountain areas of high diversity such as in Indochina, Korea, Japan and Taiwan. In addition, there are many species of rhododendron native to tropical Southeast Asia and Northern Australia. He has recorded 55 species in Borneo and 164 species in New Guinea. Relatively few species than there are in North America and Europe. People have not found rhododendron in South America or Africa. In Vietnam there are 29 species of rhododendron. Grows wild is good, planted one calling for difficult. Rhododendron hybrid created by the Belgian, it is grown in Europe, then spread to other continents. Rhododendron trees, small flowers, false Belgian United to diversity, colorful splendor, there are two colors for the flowers. According to pedology, rhododendron is the only land a sour, acidic soils, where it grows well in alkaline soil planting dead trees. Crops irrigated with well water, tap water on the alkaline soil, long, also died.

2. morphological characteristics:
In the wild flowers are small evergreen trees, shrubs, semi-evergreen, deciduous shrubs, cows form filler. The leaves, the flowers are very diverse with many colors.

3. growth characteristics:
a. light: rhododendrons often preferred the half ball, strong lighting and light proofing directly. So, strong lighting season should put the tree in a shaded place to care. Types of flowers have different resistance to light is also different.
b. temperature: rhododendron species is preferred, not suitable for the environment light, high temperature. Appropriate temperature from 15 to 250 c.
c. land: rhododendron appropriate to the type of soil acidity slightly alkaline soil in planting, then after few months the leaves will yellow and dying trees. Rhododendron is a directive to the land. Your favorite rhododendron land more fertile and porous, humus-rich, well-drained and airy, Ph from 4.2-6 is just the best, humus is pine forest.
d. country: rhododendron root development roots but very little and very sensitive to water, just the fear of short-term fear of flood. Your favorite water rhododendron slightly acidic, as if slightly alkaline alkaline and then watering will make the soil becomes acidic alkaline, affect plant. To increase the acidity of water can add iron or food vinegar sufat phase into the irrigation water.
e. humidity: humidity also affect the process of growth and development of the rhododendron. Proper humidity from 70-90% …

4. The technique of planting and fertilizing of care:

a. breeding:
To multiply like flowers commonly used methods of grafting, seed and plant extracts. For grafting can proceed in may or October, Zhejiang on April 4-5, and then seeding in the spring. Cuttings and extracts the method for rapid product than the seed.

b. planting:
+ Mix soils with the following rate: 20% of cow dung Better processed clean land + 50% Better + 30% acidic humus (humus soil if the best pine forest).
+ Select pots: based on the form of the body and spreads to decide planting pots. Rhododendron species grow shallow so should choose shallow pots is better than high pots.
+ Growing in pots: Use pots with holes in the bottom, use a mesh lining the bottom of the pot then used those bricks and gravel-lined up on thick, about 2-3 cm. Pour on about 1/2-2/3 c 0.2-0.3 kg manure + climate Better bio-organic fertilizer into the soil mix and HG01 moved into tree pots, attention to the roots of freedom and then put more land into your hand and lightly compressed. Usually 2 years prior, multidirectional reproduction repotting must be watered before 1-2 days to pots and loose soil. When to flower pots can cut roots to expedite out new roots, cut the stem to adjust the balance of the leaves and roots.