Orchid is the root flower of the orchid genus, also known as Chinese orchid, spring orchid, orchid, orchid, orchid, orchid, mountain orchid, national incense, empty valley and other names, mainland cultivation orchid has a history of more than 2,000 years, Chinese have always regarded orchid as a symbol of high purity and elegance, and "plum, bamboo, chrysanthemum" side by side, collectively known as "four gentlemen". Orchids are famous for their beautiful leaves and elegant fragrance of flowers, and are very generous in decorating the study and living room, and are deeply loved by people. A common problem that many orchid growers encounter is that freshly potted orchids are prone to root rot, and in this article, we will explore how potted orchids can prevent root rot.
To prevent orchid root rot, it is necessary to understand the growth habits of orchids, orchids like warm, humid climates, mostly grow in the south, sunny semi-shaded environment, and need more sunlight in winter. Orchids should be cultivated on sandy loam soil with rich organic matter, loose and fertile soil, good drainage and strong water and fertility retention, and the soil pH value is required to be 5-6.
1. The soil for cultivating orchids requires good permeability, and the potting soil should be made of water, fertilizer, good air permeability, loose and fertile, and rich in organic matter. It is generally made of a mixture of 70% sandy loam and 30% humus. Or it is better to use the natural soil of the orchids growing on the mountain, which can be used after a few days of sun exposure and disinfection. Under the condition of ensuring that the cultivation soil is loose, the orchid roots will generally not rot the roots.
2. Before potting, cut off the rotten roots and dead leaves, wash the orchids with water and put them in a ventilated and dry place for about 2 hours before potting.
3. Fertilization of orchids, the frequency should be less than more, and the concentration should be light and not thick, so as to prevent root rot, and poor growth can be not fertilized or less rot. Orchids that have just been dug up from the mountains are not suitable for fertilization because they do not have new roots, and they must wait for new roots to come out after 1-2 years before fertilizing. From June to July, when the orchid leaf buds are about 2 cm long, you can use thin and well-rotted liquid fertilizer, which is used several times, and it is not suitable for use in the high temperature season. After September, you can fertilize 1-2 times, fertilization should be carried out on sunny days, easy to rot roots on rainy days, and in the evening and early in the morning to water again, should not be without chemical fertilizer, pay attention not to apply to the leaves when fertilizing.
Fourth, orchids like to be dry and too wet, so they must not be watered too much. Daily management should be done less watering, appropriate amount of watering, dry watering thoroughly, watering to master the principle of "dry and wet", that is, the soil is dry and watered thoroughly, and then watered thoroughly after drying, not dry and not watering. In this way, the orchid can prevent root rot.
Fifth, change the pot, usually cultivated 2-3 years must be repotted once, orchids in the growth process, the soil will become more and more compact, at the same time, with the growth and development of the plant, the original nutrients in the soil in the pot have been basically exhausted, in order not to affect the growth and development of flowers, the orchid planted at home usually needs to be changed once every 2-3 years, the nutrients have been consumed almost the old soil replaced, replaced with fresh nutrients sufficient soil. The purpose of repotting is to recreate good potting soil environmental conditions for the continuous growth of flowers, which is conducive to maintaining the functions of soil breathability, drainage, water retention and fertilizer retention, and meeting the nutrient needs of orchids for growth and flowering.