First, plant soil.
Rhododendron is very strict with the soil. Many newly bought azaleas are cultivated in simple cultivation pots with ordinary garden soil. Soil is not only nutrient-free, but also easy to crust. Therefore, it is best to replace the pot soil after the azaleas adapt to the environment. However, loose, fertile and humus-rich acidic sandy loam is more suitable for home potted rhododendrons, while alkaline soil is not conducive to the normal growth of rhododendrons. Mountain mud, humus soil, coal cinder and organic fertilizer can all be used to cultivate soil. Rhododendron should be planted in early spring or late autumn.
Second, supplement nutrition.
Rhododendron needs a lot of nutrients to maintain its growth during flowering, so it is necessary to maintain sufficient nutrients and not to apply too much fertilizer. Usually, you can apply some organic fertilizers such as rotten bean cakes and bone meal in the flowerpot. Rhododendron can be applied with phosphorus and potassium fertilizer once every 10 day during flower bud differentiation and pregnancy, and then applied with dilute nitrogen, phosphorus and potassium compound fertilizer or potassium dihydrogen phosphate solution twice after flowering.
Third, the watering requirements
The growing environment of azaleas must be kept moist, but there should be no water in the basin. Every time you water in spring and autumn, wait until the soil is slightly dry. In summer, plants need more water, so they should be watered once a day. In hot weather, they can often spray water to cool down. After entering winter, it is necessary to properly control watering to improve the cold resistance of plants. Rhododendron should not be watered with "half water" If you don't water thoroughly for a long time, it will easily cause soil hardening and affect the growth of flowers.
Fourth, trimming and shaping.
Rhododendron branches and leaves grow rapidly and are resistant to pruning. In order to make plants beautiful, they should be trimmed and reshaped in time. Rhododendron can be pruned around May, when pruning is beneficial to the germination of new branches and the formation of flower buds. If the pruning is too late, it will affect the normal flowering. Usually pruning is mainly to drain, cut off long branches, dead branches, diseased branches, disorderly branches and so on. Keep a good tree shape.
Fifth, avoid strong light.
Rhododendrons are most afraid of being intolerant of strong light. When the light is too strong in summer, potted plants should be moved to a cool and ventilated place for maintenance to avoid direct sunlight. However, in the flower bud differentiation period, more astigmatism is needed, and enough astigmatism is more conducive to flowering and more colorful.
Rhododendrons are generally delicate flowers, and many flower friends say that rhododendrons are not easy to raise. But as long as we understand its growth habits and strengthen daily maintenance management, such as shading and cooling in high temperature weather in summer, we often spray water on plants to humidify the environment; In winter, potted plants should be moved to a warm room in time for maintenance, and the windows should be often opened for ventilation to keep the air circulating, which can also be well maintained.