Cultivation and Management of Rhododendron alpina
When the seedlings you buy are shipped to the greenhouse, they are usually vulnerable and vulnerable to damage during transportation, so it is very important for users to handle them carefully. Strengthen management at the beginning, so as to avoid a lot of problems in the future.
1. Install the basin for the first time: if you buy a pot seedling, you'd better use a hard plastic basin of 8-10 cm. The matrix in the basin should not be pressed too hard for ventilation and maintain a certain degree of humidity. Do not prune when filling the pot, prune again when the terminal bud begins to grow after the root system is developed.
2. Cultivation: one month after loading, the root system can be pruned if the root system is well developed. You have to cut off the terminal bud. It is better to branch from the bottom, like a shrub after pruning, and the plant shape is completely compact, so we should pay attention to fertilization at this time. If the branch is not good, the second pruning should be carried out. At this time, continue to fertilize and increase the content of nitrogen fertilizer. In summer, enough water must be irrigated to prevent water shortage, but excessive water may also affect the growth of root anaerobic respiration and sometimes flower bud differentiation. Fertilizing and watering should be reduced in autumn.
3. The second pot: when the root system of the alpine rhododendron grows full in the 8-10 cm basin, the plant grows to 10-15 cm high and 5-6 branches, then the basin should be changed and the 14-16 cm basin should be used. At this time, the amount of fertilizer should be increased, combined with appropriate shaping and pruning and pest control.
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The crowned rhododendron
The main features are short and strong, tight crown, delicate habits, afraid of the sun and cold. The leaves are thick, dark green, with few hairs, and can be divided into light leaves, pointed leaves, twisted leaves, long leaves and broad leaves. Florescence from April to May, a variety of colors, there are monochrome, flying white, rimmed, dotted red, bright spots, sand spray, brocade and so on, most of them are double, double, few single. Petals are narrow, round, straight, backward, wavy, flying, wrinkling, crimping, etc., with a diameter of 6-8 cm, with a maximum of more than 10 cm. In recent years, there have been a large number of new hybrid varieties.
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Cultivation and Management of Alpine Rhododendron
Alpine rhododendron is very adaptable and can grow at normal temperature. it is mostly produced outdoors in Europe and can be produced in greenhouses under certain conditions. The growth of alpine rhododendron varies greatly with different temperature. The optimum temperature of alpine rhododendron is 15-20 ℃. The highest temperature is 35-39 ℃, when the growth is inhibited, some measures of shading, cooling and ventilation should be taken in time. The temperature is best controlled within 30 ℃. When the temperature exceeds 35 ℃, the alpine rhododendron will be damaged to varying degrees, which is disadvantageous to flower bud differentiation, although alpine rhododendron.
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