Preventive measures for rotting Root of Orchid

Orchid is a very common flower in China, and it is also one of the varieties that many flower lovers like to collect. because of the wide variety of orchids, we need to pay attention to different methods when cultivating orchids. If some flower friends do not understand the habits of orchids, it is easy to raise orchids to rotten roots, so how to avoid the problem of orchids rotting roots?

Orchid

In winter, orchids are in the dormant or slow growth stage, and the basin soil should be dry; spring and early summer are important periods for orchids to take root and draw leaves, and the basin soil should be moist; but if it is too wet for a long time, it is also easy to cause rotten roots, withering and yellow leaves, and even death. Due to excessive water, resulting in soil stagnant water, poor air permeability, resulting in insufficient oxygen, hindering root respiration, causing root blackening and decay. Magnolia must avoid its harm in plum rain or rainy season, because it is wet for a long time, black spots are most likely to occur on new leaves, and stamens often have "rotten clothes" phenomenon, affecting flowering and ornamental. However, if the basin soil is too dry, it is easy to make the pseudo-bulb dry or other tissues lose water and affect metabolism, which will also lead to tissue weakness and poor plant growth. The pot soil should be wet in autumn to facilitate the emergence of leaves and flowers in the coming year. Therefore, orchid farmers should know the secret of "not wet in winter, not dry in autumn". The above shows that orchids have different requirements for water in different periods, so the amount of water should be strictly controlled according to the requirements. At the same time, improper fertilization of orchids can also cause root rot, such as excessive fertilization, excessive concentration or pouring liquid fertilizer into the leaf sheath, which will have adverse effects on orchid peanuts. When fertilizing, we should increase or decrease the amount of fertilizer according to the amount of water, so as to make it grow harmoniously.

Causes and preventive measures of rotten buds of orchids in summer

Orchid is an indispensable ornamental plant in the family, which has been loved by people since ancient times. Gradually into the summer temperature changes greatly, orchids if poor maintenance and management, will rot roots, rotten buds, seriously affect its normal growth. Today, I will bring you to talk about the causes of the rotten roots of orchids and what are the preventive measures.

The reason for the rotten bud of orchid:

1) watering and spraying carelessly, splashing into the center of the bud, or being drenched in the rain for a long time; coupled with insufficient light and low temperature, the water cannot be absorbed; even the new buds are immersed in water after heavy rain and do not drain in time, resulting in rotten buds.

2) turning over the basin, pruning old leaves and daily watering, fertilization, spraying carelessly, or encounter accidents, resulting in damage.

3) when applying liquid fertilizer, it was accidentally splashed into the bud heart and did not try to remove it, resulting in rot.

4) the mother plant was infected with bacteria and failed to control in time, coupled with the weak disease resistance of buds, resulting in rotten buds.

5) scale insects, aphids and red spiders absorb the sap of buds, and mice bite sweet buds and tender leaves, causing harm.

6) rotten buds caused by rotten roots.

Prevention methods of rotten buds of orchids:

⑴ daily watering, fertilization, it is best to use ladle spoon from the edge of the basin; do not spray to the orchid plant with water pipes to prevent soil and sewage from splashing into the center of the bud. In the seedling stage, try not to spray water to the orchid plant, if you need to spray water, you must use a fine-eye sprinkler, the water point is not too large, with the leaf surface not dripping is appropriate. If it is a thick-eyed sprinkler, cover the new buds.

⑵ summer and autumn plum rain, continuous rainy season, pay attention to prepare for rain. Or use nylon cloth or plastic film to build a temporary canopy on the orchid plant, or move the orchid plant to a place that is out of the rain before rain. And pay attention to watch the weather forecast, once there is heavy rain, torrential rain, must take emergency measures to prevent; if there is no time to avoid the rain, it is necessary to remove stagnant water in the basin in time after the rain.

⑶ hot summer to prevent strong light, high temperature baking and no ventilation; cold winter should pay attention to keep warm, avoid frost damage; winter watering water temperature should be similar to the air temperature, not too high, otherwise easy to cause scald.

⑷ sterilized and killed insects in time. During the growing period of the orchid plant, carbendazim, topiramate or other fungicides should be sprayed regularly to prevent the disease. Once pests are found, timely spray dimethoate, aphid lice net, quick culling, fenitrothion and other insecticidal drugs. Every day, we should also do a good job in the security of the Orchid Garden to prevent man-made and accidental injuries.

The above is all we know today about the causes of rotten orchid buds and preventive measures. I hope flower friends will be helpful to you after reading this article. If you want to know more, please continue to follow our succulent flower bed. We will provide you with more related knowledge!

How to treat rotten roots of flowers? How to prevent rotting Root

Autumn is coming, but the weather is still muggy. If you are a watering party, coincidentally, the soil is not breathable, and the air is not ventilated. Then your flower iron will rot! So how to treat, judge and prevent rotting roots? Huahua, I'll leave it to you!

First, how to treat rotten roots

First of all, we should divide the rotten roots into plants, such as succulent plants, orchids, woody plants, herbaceous plants, these categories will also involve individual varieties, not all plant rotting roots are treated in the same way. Babies should learn and use them, not blindly.

The common treatment methods of rotting roots of plants are mainly divided into the following three types:

1 replanting after cleaning

Clean up the rotten parts, then disinfect them, dry them, and replant them. This method is mainly aimed at plants with unfinished roots, such as orchids and orchids. The specific operations are as follows:

1. Remove the plant from the flowerpot, pick out the outer soil, find out the rotten root, and cut the rotten root from its base with scissors.

two。 Disinfect the wound with 0.1% potassium permanganate solution, or apply the wound with clean plant ash, and then change the basin or plant in the ground.

3. The seriously damaged part of the wound and root system should be filled with clean wet sand and covered with clean cultivation soil to promote the germination of new roots in the wound.

4. When changing the basin, the branches and leaves should be pruned intensively, sometimes 80% or 90% of the branches and leaves should be cut off in order to ensure their survival.

5. In the process of restoring the growth of the plant, it is necessary to keep the pot soil breathable, put an end to fertilization, and do not let the basin soil get caught in the rain, so as to prevent the root rot from happening again.

(2) cutting with branches and leaves

Such as succulent, big rock tree, bean green, geranium, four seasons crabapple, etc., in the root rot, you can use branches or leaves to reproduce. Of course, it must be healthy branches and leaves, not rotten and strong.

3 found that it was too late to return to the sky.

Some large woody potted plants, such as rich trees, are less than 10% likely to be saved once their roots are rotten, and in most cases they will die slowly, because it is too late to find rotten roots.

So usually must observe more plants, early detection, early treatment, then how to find the rotten roots of plants? Here are some tips to learn together.

Second, how to judge the rotten roots of flowers

Root system is one of the most important organs for plant growth and development. If we can make an accurate diagnosis in the early and middle stages of root rot and take some rescue measures, we can avoid the death of some plants.

1 look at the basin soil

In summer and autumn, flowers and trees with normal growth are watered once in fine weather, and the basin soil is examined at the same time the next day. If the basin soil is dry and slightly white, the root system is normal.

If the potted soil is not dry and white, and is still in a wet state, it means that rotting roots have occurred in the roots of the plant.

If it is still moist after 2 or 3 days, it means that most of the root system of the plant has rotted.

2 look at the leaf color

If there are several pots of flowers and trees of the same kind and put them together, if it is found that the leaves of one of them are green and dull, gray-white, or the leaves of the plants are wilting, or the lower leaves turn yellow and fall off in large quantities in the non-leaf-changing season, it shows that the nutrient fibrous roots of the plants have rotted roots due to stagnant water, fertilization or excessive drought.

3 look at the leaf shape

The leaves of potted flowers and trees are longitudinally wrinkled and deformed, which also indicates that the root system of the plant has rotted, which mainly appears in the fleshy root flower species, such as orchid, gentleman orchid and so on. Due to the decay of the lower vegetative root system, the part of the connected leaves can not get the proper water and nutrients, which stops growing or even shrinks, and the growth is out of sync, resulting in longitudinal folds and deformities of the leaves. Although this situation does not cause plant death, it will also affect the normal growth and ornamental of the plant.

4 look at the tip of the leaf

Some species of flowers and trees will become scorched at the front of the leaves after being planted for a period of time, which is caused by two reasons.

First, because the root tip of the plant stretched against the basin wall and watered under the condition of high air temperature and soil temperature, the part of the succulent root tip performing nutritional function was damaged and rotted, so that water and nutrients could not be transported to the leaf tip, causing partial necrosis of the leaf tip.

Another situation is that the plant is small and the pot soil is in a state of stagnant water for a long time, resulting in root rot and loss of nutritional function, and yellowish-brown patches appear in the middle or edge of leaves, then the possibility of disease should be considered.

5 by hand feeling

Some flowers or stumps, such as five-needle pine, cypress, Luohan pine, orchid, camellia, etc., can be judged by hand when they are found to be abnormal in leaf color. For plants whose leaves are lifeless due to root rot, the fingertips feel dry and warm, without the moist and cool feel of normal leaves.

Third, how to prevent rotting roots

Rotten roots are really one of the biggest killers of plants. Therefore, in order to avoid this situation, we should pay attention to the following points:

1 watering should be moderate

Watering should be moderate and not too frequent, which is a common mistake made by many beginners who grow flowers. The principle of seeing dry and wet should be grasped. This should be paid more attention to during the dormant period of the plant and in the early stage of basin change.

2. Fertilizer should be mature.

All kinds of organic matter mixed in the cultivated soil, such as rotten leaf soil, ring manure, sawdust, farm manure, barnyard manure, organic waste, etc., must be fully fermented for a long time before they can be used, do not use raw fertilizer, otherwise, when the raw fertilizer is fermented, the temperature is too high, it will cause the root system to burn.

(3) fertilization should be scientific.

When topdressing potted plants, the dosage and concentration must not be too large, and the principle of "a small number of times" should be followed as far as possible. If the dosage is too large, it will burn the roots.

4. The soil should be ventilated.

It is necessary to ensure that the basin soil permeates well. When potted flowers are watered, water accumulates on the surface of the basin soil, which is not easy to seep for a long time. There are several reasons for this situation:

1. The new basin soil is clayey soil and does not contain organic matter or fine sand, so it is difficult to permeate water. Therefore, organic humus, river sand, slag, soot and other components should be added appropriately to ensure that the matrix has good aeration and water permeability.

two。 The tiles on the bottom hole of the flowerpot block the hole, or the gravel layer of the basin bottom cushion is too thin, or the unpadded gravel leachate layer, so that water seepage is not smooth.

3. The potted flowers have not changed pots for many years, and the roots are covered with clumps in the basin, so that it is difficult for the water to seep. Therefore, it is necessary to cut off too many fibrous roots, otherwise it will cause stagnant water to rot and die over a long time.