Rhododendron prefers a dry air environment. It is easy to be infected by germs in rainy days. Keep the leaves dry at night. The optimum relative humidity of air is 40-60%.
Temperature: Vetiver like cold climate, avoid hot, frost resistant. The temperature requirement in winter is not very strict, as long as there is no frost, it can survive the winter peacefully; when the temperature is over 30 ℃ in late spring and early summer, the most suitable growth temperature is 15-25 ℃.
Light: in late autumn, winter and early spring, because the temperature is not very high, it should be given direct sunlight to facilitate its photosynthesis, flower bud formation, flowering and fruiting. In summer, if you encounter hot weather, you need to block about 50% of the sun.
Watering: the watering principle of Rhododendron is: see dry see wet, dry to dry, do not dry do not water, water to water. When watering, pay attention to keep the leaves and flowers in a dry state, and do not touch the water.
Fertilization: apply fertilizer and water to the decayed pancakes once a month to make the plants grow well. Do not apply more nitrogen fertilizer, it is easy to cause the plants to grow in vain. It should be ensured that the plants are fully nutritious and the amount of P, K and N fertilizer is applied less and more times.
There are two ways of propagation: sowing and cutting. Sowing can be carried out in spring and autumn, cutting is generally combined with heart picking.
The main root of Rhododendron is long and can't be transplanted. Before sowing, apply some rotten soybean cake as the base fertilizer, and directly sow the seeds in the basin. Flower friends should first choose a flower pot when sowing, so as to avoid poor plant growth caused by insufficient space after the growth of Rhododendron.
Rhododendron has certain toxicity. If you touch its leaves directly, you may feel itchy skin and get granules. If it is serious, you must see a doctor. Eating the fruit may cause vomiting, diarrhea and other symptoms.
During maintenance, bear children shall be prevented from contacting with flower leaves. You should also be careful when you care.
