Rhododendron can be cultivated in the open or used as a bonsai. According to the growth of the plant, the potted plant needs to choose a flowerpot of appropriate size, and then fill the soil. First, put some broken tiles on the bottom of the flowerpot as the filtering layer, and then fill the mixed substrate on the filtering layer. You can choose garden soil, coarse sand, slag or rotten leaf soil to mix, and add the soil. Some rotten organic fertilizer is used as base fertilizer.
Rhododendron like light, can withstand half shade, strong adaptability, can withstand cold. The suitable temperature for Rhododendron's growth is between 16 ℃ - 28 ℃. Pay attention not to be too hot in summer. The light should be moderate to ensure that there is enough light for the growth of Rhododendron, but it should be noted that the intensity of light can be adjusted manually to avoid strong direct sunlight.
Rhododendron has a vigorous growth, luxuriant flowers and leaves, and is very beautiful, which requires good water and fertilizer management. In the cultivation process of Rhododendron, the consumption of water and fertilizer is large, so it needs to be watered properly to keep moist and avoid too dry soil. Basically, during the growth period, it needs to be watered once or twice a month. Fertilization needs to ensure sufficient nutrients, and regulation is carried out according to the growth needs of Rhododendron. For example, some p and K fertilizer can be applied before flowering, and some fertilizer can be applied during winter to ensure winter.
Propagation of Rhododendron can be carried out by sowing, cutting and layering. Sowing propagation is mainly autumn sowing, cutting and layering need to select the right branches.
Rhododendron is a woody plant with luxuriant branches and leaves. Proper pruning is good for the growth of Rhododendron. Pruning is better during the budding period of Rhododendron growth, and has little effect on tree shape. When pruning, pay attention to pruning too dense branches, too long branches, dead branches and diseased branches, and prune residual flowers after flowering.
The main diseases of Rhododendron are powdery mildew, coal pollution and brown spot. The main pests are aphids, scale insects, red spiders, coir moths and yellow bayworm. When diseases and insect pests break out in Rhododendron, timely measures should be taken to control them.
