How to manage the azaleas after blooming
After pruning and plastic rhododendron blooming, it is generally necessary to manually remove the residual flowers, and then carry out appropriate thinning, cut off the dense branches and let them re-branch.
Fertilizer and water management in northern China, the water is alkaline and hard. Long-term watering of flowers is easy to cause soil Alkalization and affect the growth of flowers. Therefore, the water should be stored in a container for more than 24 hours before watering, and then used after chlorine volatilization. It can also be watered every 10 days or so with the right amount of ferrous sulfate or edible white vinegar. Cuckoos do not need much fertilizer, and generally fertilize with water. Bean cake fertilizer and water can be applied every half a month from late spring to early summer. Thin fertilizer should be applied frequently to promote the germination and branching of new buds. If there is no bean cake fertilizer, you can go to the market to buy some acid flower fertilizer, using the same method. To the middle and last ten days of June, some available phosphorus and potassium fertilizers can be applied to promote flower bud formation. In late autumn, stop fertilization to avoid the growth of new buds affecting flower bud differentiation.
In summer, azaleas like cool and humid climates. in summer and autumn, azaleas should be placed in a cool and ventilated place, and fresh water should be sprayed on and around the branches and leaves. You can also put fresh water on the platter and place the flowerpot on the platter to let the flowers absorb water slowly from the bottom of the platter.
The temperature regulation at flowering stage has a great influence on the flower bud formation of rhododendron. Generally, flower bud differentiation begins when the temperature is more than 15 ℃. The suitable temperature is 20 ℃ ~ 27 ℃, and the night temperature is about 5 ℃. Most flower buds need to be treated with low temperature of 4 ℃ ~ 7 ℃ for about 30 days before flowering. In addition, shading treatment is beneficial to flower bud formation and flowering.
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Flower control technology of rhododendron
Rhododendron, alias Yingshanhong and rhododendron red, can be divided into four types: rhododendron, summer rhododendron, eastern rhododendron and western rhododendron according to flowering period and introduction source. If the temperature, humidity and other conditions are artificially controlled, the flowering time can be advanced or delayed according to personal preference. First, blossom ahead of time: the flower buds of rhododendrons generally begin to differentiate in autumn. In the cold winter season, azaleas are moved to greenhouses and maintained at a room temperature of 20-25 ℃, and water is often sprayed on branches with fine sprayers to maintain high humidity.
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Attention should be paid to watering azaleas
Rhododendron is an acidic shallow-rooted flower with dense whisker roots as thin as hair. Like moist, avoid dry, afraid of waterlogging, rhododendron watering should do: first, use slightly acidic water. Azaleas like slightly acidic water, avoid alkaline water, it is best to water with soft water, because the inorganic salts such as calcium and magnesium contained in hard water often bring harm to normal physiological activities. Rain Water, river, lake and pond water are called soft water, which are generally weakly acidic or neutral, suitable for watering flowers. Second, use "trapped water". At present, tap water and deep well water are commonly used in family flower cultivation. Most of these two kinds of water are hard water.
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