What Causes the Yellowing of Orchid Leaves
Today's mini experience sharing: What causes the yellowing of orchid leaves and related knowledge on how to deal with yellow leaves, let's learn 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, there is a phenomenon of yellowing leaves, what are the causes? Summarize three reasons, adjust as soon as possible to return to green. Let's learn more!
1. Maintenance Issues.
(1) Orchids thrive in a humid environment, but excessive watering can lead to accumulated water in the pot, causing root rot and resulting in yellow leaves. If the potting soil of orchids is too dry, it can also make the stems and leaves dry and yellow. If water accumulates in the pot, promptly deal with the excess water, increase ventilation, and allow the water to evaporate.
(2) Orchids enjoy fertilizer but are not tolerant of overly concentrated fertilizers, which can cause fertilizer burn, burn the roots, and lead to yellow leaves. Orchids also do not tolerate raw fertilizers, which can produce heat during fermentation, burning the roots and causing yellow leaves. If a concentrated 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. Frequently touch the surface of the leaves to feel if they are dry and hard, and 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 encourage blooming.
2. Positioning Issues.
(1) Orchids do not tolerate strong sunlight, and if placed in direct sunlight, the intense light can easily burn the plants, causing the leaves to wither and turn yellow. If orchids are kept in a shaded environment for a long time, they cannot perform photosynthesis, making it difficult to form chlorophyll, thus causing yellow leaves.
(2) Orchids are not cold-tolerant, and if the temperature is too low in winter and the plants are not properly insulated, they can be frostbitten, leading to yellow leaves.
What Causes the Yellowing of Orchid Leaves
Usually keep the orchids in a semi-shaded area, where they can receive scattered light, rotate the pot regularly to ensure even exposure to light. Maintain good ventilation during growth to prevent the occurrence of diseases and pests.
In winter, promptly move the orchids indoors for maintenance and take insulation measures to keep the temperature 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 1-2 years. The soil should be loose, fertile, and permeable. A mixture of sandy soil, ordinary garden soil, and decomposed leaf mold can be used, with decomposed manure as the base fertilizer to supply nutrients for subsequent growth.
The above introduction by Greenery Enthusiast Network on what causes the yellowing of orchid leaves and how to deal with yellow leaves provides detailed content, hoping it can be of help to you!