Master these three tricks to keep orchids from dying in summer

Carry forward the national orchid culture and spread the knowledge of orchids

Experienced orchids all know that in summer with high temperature and humidity, orchids are prone to blackening and yellowing at the base of their leaves, and then orchids gradually rot and lose their vitality. This phenomenon is generally caused by soft rot and stem rot of orchids. These two diseases are the most common diseases of orchids in summer, and their destructive power is very large, the rate of infection is very fast, and the onset cycle is very short. An extremely healthy orchid can die in about a week. if these two diseases are not prevented in time, the final result must be sighing. As for how to deal with the diseases of orchids, I will teach you three tips today. learning these three tricks can make your Yilan road more successful and less failed!

Step 1: identify the diseases of orchids

First of all, judging from the position, the general problem of yellow leaves from the top down is not big, and the problem of yellow from the bottom to the top is serious, which must not be careless. The common diseases are stem rot and soft rot. These two diseases are the most serious and occur most frequently in summer. Today, I will choose these two kinds to tell you!

First understand the onset cycle of these two diseases and see how severe they are.

Soft rot: the orchid plant died of the disease within a week

Stem rot: for a month or even half a year

Awesome, especially soft rot, the orchid died before you even knew it!

Next, let's understand the characteristics of the two diseases.

Soft rot: generally start from the new seedling, the base of the leaf or the upper part of the root first produce waterlogged disease spot, grayish yellow, plant tissue sticky wet rot, into mud-like, foul smell, disease spot upward, lower, left and right spread, resulting in stem base and root, petiole rot.

As the tissue becomes brittle after the damage of the stem base, the orchid leaves fall off very easily, and the diseased plants in the late stage of the disease are dumped by themselves. treatment: use anti-bacterial agents, such as copper hydroxide, king copper, amber fertilizer copper and other copper preparations, the usage is described on the package.

Stem rot: the initial symptom is that the base of the leaf turns brown, the leaf turns green and droops slightly, after the disease develops rapidly upward, the whole plant dies, the leaf sagging does not fall off, the cortex of the diseased stem shrinks, the epidermis rot is spongy, and after the disease extends to the root, the root cortex decays, and in the late stage of the disease, some petioles are still tough, but some petioles have lost water and wrinkled, and some petioles are yellowed, brittle and easy to break. Treatment: the use of antifungal agents, such as carbendazim, chlorothalonil, potassium permanganate, methyl topiramate, etc., are described on the package.

Step 2: strengthen the ventilation of orchids

We know that most of the harmful bacteria that threaten the life of orchids are anaerobes, and an unventilated environment will reduce the oxygen content in the air, which provides a favorable condition for anaerobes to reproduce. On the other hand, the environment with immobile air makes a large number of spores reproduce in one place, and when a certain amount of harm is reached, the orchid is easy to get sick, so it is necessary to strengthen the ventilation of the orchid. Orchids should be placed in a well-ventilated place in summer, but they should not be over-ventilated and leaves should be rubbed against each other. Windows should be opened if they are placed indoors, and fans and other equipment can be used to enhance ventilation. Only when ventilation is done, probiotics in flowerpots that are conducive to the growth of probiotics can multiply rapidly. Probiotics are also called "aerobic bacteria". Probiotics and anaerobes are a process of growth and decline. And ventilation is an important means to optimize it!

Another rough method is to optimize through drugs. In summer, fungicides should be used every 7-15 days, usually with fungicides, carbendazim, chlorothalonil, potassium permanganate, methyl thiophanate, etc. Some people will ask that this is not killing both probiotics and anaerobes, ah, it is safe to do so, so you should strengthen the ventilation of orchids and do not apply fertilizer in summer. You regret giving a bag!

Trick 3: don't water too much

There is a very interesting phenomenon in the cultivation of orchids. "newcomers are prone to waterlogging and veterans to death by drought." most novices do not understand the truth that orchids are prone to rot in stagnant water, and if they do, they will not use unventilated soil to plant or water all the time. There is also a saying that "dry cultivation has less disease, wet culture has more disease". I am not teaching you to raise it this way, but it will be relatively safer for beginners to do so. Without frequent disease or death of orchids, the veteran can solve the problems of plant material and ventilation, and can be cultured in high water, with high germination rate and fast seedling growth, so the novice should not learn, because the comprehensive ability is not at the same level after all. The novice should feed first and then seek good maintenance, dry management, first, it can increase the chances of solar sterilization in the plant environment. Second, reduce the possibility of bacteria spreading in the wet and permeable plant material environment, plant with fingernail-sized granular, good air permeability and fast leach, avoid the plant materials that are easy to harden and accumulate water, especially do not use soil, which is very prone to problems. It is recommended that people use a mixture of pebbles the size of fingernails and Chinese chestnut king plant material at 1:1. This formula is quick to drain and moisturizing, and does not need fertilization, so it is safe and reliable. Suitable for beginners, plant surface down 2cm about dry can be watered, summer daytime do not water and spray leaves, watering in the evening to teach!

Orchids are known only when it is difficult to grow orchids. Don't be afraid to encounter diseases, learn more and sum up more, improve yourself step by step, different strategies in different regions, different methods in different environments, don't copy mechanically, use flexibly, understand the principles inside naturally, and master the above 3 tricks to make the orchids safely through the summer. Thank you for reading! Author: Mei Fei, founder of Orchid Bar Forum, Secretary of Orchid Association of Jingshan City, Hubei Province, online celebrities of orchid industry on major self-media platforms!

Orchids, you are a good teacher on the way to raise orchids.