Orchid Leaves Turning Yellow

House and garden
Mary Jane Rosenberg Mary Jane Rosenberg
Orchid Leaves Turning Yellow

Sooner or later, the leaves on every orchid will turn yellow, dry out, and can be cut off. The foliage turns yellow because the remaining nutrients are shifted to the aerial roots. 

If the leaves turn yellow in large numbers, the orchid does not feel well. If there is too much sun, the orchid often gets yellow leaves.

Why Are My Orchid Leaves Turning Yellow
Why Are My Orchid Leaves Turning Yellow

Why Are My Orchid Leaves Turning Yellow

Why Are My Orchid Leaves Turning Yellow
Why Are My Orchid Leaves Turning Yellow

The foliage turns yellow when an orchid has something to do with unsuitable location. This rainforest’s beauty feels at home in a bright, not fully sunny place with temperatures of 20 to 25 degrees Celsius and a humidity of 50 to 80 percent. 

The orchid must never come under the influence of cold drafts or prolonged shade. However, if the leaves are increasingly yellowing, some conditions are not comfortable for the plant and should be urgently eliminated. 

After cutting off the yellow leaves with scissors, germs penetrate the open areas. Therefore, it is advisable to leave a yellow leaf on the plant until it has completely dried up and easily peeled off or falls off by itself.

Yellow Leaves on Orchids from Incorrect Watering

Orchids do not get wet. Yellow leaves on orchids can be a sign of waterlogging. Watering should only be done when the orchid substrate is already dry. 

You can avoid waterlogging in orchid pots with a large water reservoir. Excess water drips off after watering and can be thrown away. 

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Most orchids thrive better with an immersion bath every one or two weeks than with a watering can. However, after soaking, you should drain off too much moisture so that the roots do not stand in the water for a longer period. 

If there is a lack of water, orchid leaves initially become soft and wrinkled. A long time later, the rich leaf green changes to yellow and brown tones. 

The foliage may react to dry room air, or the orchid gets too much sun. In these cases, a move to a shadier place with daily fogging is due.

Orchid Leaves Turning Yellow
Orchid Leaves Turning Yellow

Vermin as a Trigger for Yellowing Leaves on Orchids

Yellow leaves on orchids can be caused by sucking insects. Sometimes mealybugs appear in orchids. 

These pests reveal themselves with their white webs and greasy fluff. Spraying with a solution of soft soap and alcohol has proven to be an effective treatment against mealybugs. 

You can use the same mixture in the fight against scale insects. The specialist market also offers pesticides that kill insect pests on orchids. 

The insecticides are usually offered as a spray. It would be best if you placed plants infested with vermin separately to prevent them from spreading to other plants.

Orchid Leaves Turning Yellow
Orchid Leaves Turning Yellow

Prevention of the Yellow Leaves

As descendants of the rainforest, most orchid species want a sheltered place from the wind and sun and with slightly higher humidity. A constantly wet place is not recommended.

You can also pour a liquid orchid fertilizer that supplies the nutrients occasionally into the irrigation or immersion water. Finally, the fact that older leaves at the very bottom turn yellow is one of the normal phenomena on orchid plants.

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