What Causes the Yellowing of Orchid Leaves
Sharing experiences on why orchid leaves turn yellow and the reasons and solutions for yellowing leaves in green plant care, let's delve into this together next.
Orchids, with their elegant flower colors and noble temperament, have been favored by the public throughout history. During the process of growing orchids, leaves turning yellow is a common phenomenon. What are the causes? Here are three reasons to adjust promptly for greening. Let's find out more!
1. Care Issues.
(1) Orchids thrive in humid environments, but excessive watering can lead to accumulated water in the pot, causing root rot and resulting in yellow leaves. Dry potting soil can also lead to withered and yellowed leaves. If accumulated water is found in the pot, promptly handle the excess water, increase ventilation, and allow the water to evaporate.
(2) Orchids enjoy fertilizer, but not too concentrated, as overly concentrated fertilizer can cause fertilizer burn, damaging the roots and leading to yellow leaves. Orchids also do not tolerate raw fertilizer, which can produce heat during fermentation, burning the roots and causing yellow leaves. If excessive fertilizer has been applied, promptly flush with a large amount of water to dilute and wash away the fertilizer, and in severe cases, change the soil and repot.
Watering orchids should be based on the condition of the potting soil. When the soil surface turns white, water thoroughly. Regularly touch the leaf surface to feel for dryness; if the leaves feel hard, spray water to increase humidity. In addition to the base fertilizer added during planting and repotting, apply nitrogen fertilizer in the early growth stage and phosphorus fertilizer before flowering to promote rapid differentiation of flower buds and flowering.
2. Positioning Issues.
(1) Orchids do not tolerate strong sunlight. Placing them in direct sunlight can lead to excessive strong light, easily burning the plants and causing leaf wilt and yellowing. If they are kept in a shaded environment for too long, orchids cannot perform photosynthesis, making it difficult to form chlorophyll, thus causing yellow leaves.
(2) Orchids are not cold-tolerant. In winter, if the temperature is too low and the plants are not properly insulated, they can be frostbitten, leading to yellow leaves.
What Causes the Yellowing of Orchid Leaves
Usually, keep them in a semi-shaded area for care, where they can receive scattered light, regularly rotate the pot to ensure even light exposure. Maintaining good ventilation can prevent the occurrence of diseases and pests.
In winter, promptly move the orchids indoors and take measures to keep warm, maintaining a temperature of above 10 degrees to prevent frostbite. Do not over-ventilate in winter, as cold winds can injure the branches and leaves.
3. Soil Issues.
Long-term failure to change the soil can lead to soil compaction, poor permeability, reduced root activity, difficulty in absorbing water and nutrients, and resulting in yellow leaves.
In suitable seasons, change the potting soil once every 1 to 2 years. The soil should be loose, fertile, and permeable. A mixture of sandy soil, ordinary garden soil, and decomposed leaf mold can be used. Use decomposed manure as a base fertilizer to supply nutrients for subsequent growth.
The above is a detailed introduction to the reasons for the yellowing of orchid leaves and the solutions for yellow leaves. Did you get it?