The planting of Rhododendron is mainly based on bulbs. Choose the right flowerpot according to the size of the seed ball, maintain properly, and the big ball can bloom in the same year.
The planting time is usually in autumn. If you miss autumn, you can store the seed balls in the wet sand, and wait for autumn planting. It is necessary to select loose and fertile soil with good drainage for seed plants, which is easy to cause seed ball rot due to poor soil quality.
Planting is to ensure a certain distance, about 30 cm for the big ball, 20 cm for the middle ball and 7-8 cm for the small ball. Do not cover the soil too deep after planting, 3-4cm.
Rhododendron is a wild flower in the north. It is not so pretentious. After the germination of the seed ball, pay attention to supplement the sunshine. The normal light does not need to be shielded, and more than 6 hours of light time can be guaranteed every day.
Pay attention to the humidity, not too dry or too wet, when the weather is sunny, it is good to put the plant in the outdoor culture, do not water too much, so as to avoid rotten roots.
As a kind of grass flower, there will be a lot of small weeds around Shandan, competing with plants for nutrients. During the growing period, weeding should be carried out frequently and directly. In the seedling stage, the soil should be loosened frequently to ensure enough oxygen in the soil, but in the later stage, when the root is mature, the root system will emerge on the soil surface. In order to avoid damaging the root, care should be taken when loosening the soil.
From April to may, Rhododendron will grow rapidly and will gradually grow into buds. In this process, it is easy to encounter underground pests such as ground tiger and grub, which are difficult to control. Therefore, it is necessary to do a good job of disinfection in the ball planting, and the root can be irrigated with disinfectant every month in the maintenance.
Rhododendron likes sunny and dry environment. Its roots are suitable for cold and cool environment. It can't be stifled. High temperature and humidity environment can easily cause root rot. Pay attention to timely ventilation and frequent loosening of soil in summer.
Bulbous plants will have obvious dormancy period. They will bloom from June to July, the stems and leaves on the ground will gradually wither in August, and the parts on the ground will all wither in September. At this time, the bulbs will enter the dormancy period. Pay attention to the protection of the bulbs, replant next year, will continue to bloom.
