Management of rhododendron after flowering
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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Introduction of rhododendron species-- sheep hesitant
It belongs to the subgenus Rhododendron. Deciduous shrubs, 0.5-2 m tall. The branchlets are soft and thin. Pilose and bristles. The leaves are papery, light green, long elliptic-lanceolate, 5-12 cm long and 2-4.5 cm wide, apex obtuse, with a convex tip, base cuneate, margin ciliate, petiole, leaf surface, and leaf back all pilose. Terminal raceme umbels with 5-9 flowers, flowering in early May, about 10 days later than Yingshanhong, flowering first and then leaves or flowers and leaves together, Corolla broadly bell-shaped, caliber 5-6 cm, golden to orange
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Causes of Defoliation and Death of Rhododendron after Organic Fertilizer Application
Azalea irrigation after the application of organic fertilizer system, there are abnormal deciduous death, there may be the following reasons: first, there may be a small amount of salt (sodium chloride) mixed in eggshells and bean dregs, and azalea fine fibrous roots are sensitive to sodium ions, resulting in the death of rotten roots and deciduous leaves. The second is the concentration of 5%, which may be thicker for the fine hair fiber roots of rhododendrons, or the final remaining fertilizer solution, which will have a higher concentration, making it difficult for plants to resist. Third, fertilization time is inappropriate, such as in the flower after wither, when the new root just out,
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