How to Deal with Yellow Leaves on Orchids
Today, we will discuss the causes of yellow leaves in orchids and the remedies and treatments for this issue. Let's dive into the details with the introduction by the editor.
Causes of Yellow Leaves on Orchids
1. Some of the reasons for yellow leaves in orchids are improper watering. Orchids prefer a slightly moist environment. If they are dehydrated for too long, the dry soil can't be relieved, leading to yellow leaves. Conversely, excessive waterlogging in the soil can inhibit root respiration, preventing orchids from absorbing the necessary nutrients, which also causes the leaves to turn yellow and dry.
2. Orchids require certain lighting conditions for growth. Long-term exposure to dark environments prevents orchids from photosynthesis, resulting in poor plant growth. However, too much sunlight can burn the leaves, causing them to turn yellow or fall off.
3. Orchids are most susceptible to over-fertilization. Excess fertilizer accumulates in the soil around the plant roots and cannot be fully absorbed, leading to root rot, yellowing, and drying of the leaves. This can also cause diseases and pests, with eggs or bacteria slowly appearing on the plant, leading to yellow leaves.
Remedies and Treatments for Yellow Leaves on Orchids
1. Remedial Measures
1. If yellow leaves are caused by improper watering, timely remedial actions can alleviate the issue. Once dry soil is detected, water should be added promptly. If there is not much excess water, loosen the soil to promote evaporation. If there is too much water that cannot be evaporated, the entire orchid plant should be removed, the waterlogged roots cut off, and then transplanted into new soil.
2. For yellow leaves caused by lighting issues, the orchid should be placed in a cool, shaded area with scattered light. Leaves damaged by direct sunlight should be cut off and then shaded, or moved to a cool, well-ventilated area to alleviate the condition.
2. What Medication to Use
For yellow leaves caused by diseases and pests, it is important to identify the cause. Fungal infections require fungicides such as carbendazim, metalaxyl, thiophanate-methyl, or potassium permanganate for disinfection; bacterial infections should be treated with copper preparations like copper hydroxide or王铜.
3. Daily Maintenance
In the daily maintenance of orchids, water should be added in moderation and at the right time, keeping the soil slightly moist. It is also important to maintain the humidity around the orchids. When fertilizing, use a thin application of fertilizer skillfully, avoiding high concentrations or excessive amounts. After fertilizing, water thoroughly to dilute the fertilizer.
The above information provides you with detailed introductions to the remedies and treatments for yellow leaves on orchids and the specific causes of yellow leaves, for reference and learning by netizens.