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8 reasons why the leaves of the phalaenopsis orchid turn yellow, and what a grower needs to do to help the plant?


If houseplants are your passion, you've probably noticed the phenomenon of yellowed leaves.

This occurs quite often and for various reasons. This article will help you understand the process.

Below we will talk about what the yellowing of phalaenopsis looks like and what it is. The first signs of the problem and preventive measures will also be described.

What does yellowing look like and what is it?

Phalaenopsis yellowing is a change in the color of the leaves. It indicates that the plant lacks nutrients. Plants do not die from yellowing, but their quality of life decreases significantly.

The defeat of the lower or upper leaf plates

There are 2 options:

  1. The upper or lower leaves turn yellow, and the veins remain green.
  2. The main part of the leaf is green, and the veins turn yellow.

Important. When you find that the leaves are turning yellow, you need to quickly determine the cause.

Why is this happening?

The reasons why the leaves turn yellow are different:

  • naturally;
  • due to a burn;
  • due to lack of light;
  • excess or lack of nutrition;
  • due to a virus;
  • due to bacteria;
  • due to fungus;
  • due to lack of moisture.
  1. Natural aging. Old phalaenopsis are vulnerable, and they begin to turn yellow in the first place.
  2. Burn - damage to leaves by sunlight. At this point, pale brown spots are observed on the plant.

    Causes of burns:

    • Direct sunlight on the wet surface of the leaf.
    • Sharp temperature fluctuations.
    • Concentration from glass when turning on the light.

    Reference. Most often, burns occur at high temperatures and low humidity.

  3. Lack of light. From it, the leaves look withered, sagging and lose their natural color.
  4. Over or under nutrition. Due to lack of nutrition, the upper leaves of the orchid turn yellow. How to understand what plants lack?
    • Magnesium - a white edging appears around the veins along the contour.
    • Nitrogen - tips and veins turn yellow.
    • Calcium - the leaves are deformed and take on an irregular shape.
    • Zinc - the leaves seem to fade and discolor.
    • Iron - the leaves turn yellow and shrink.
    • Potassium - the edges and tips turn yellow, but the veins do not change color.
  5. Viruses. There are 2 types of viral plant diseases: jaundice and mosaic.

    Signs of jaundice:

    • dwarfism;
    • yellowing;
    • excessive branching;
    • twisting.

    Mosaic signs:

    • Mottling.
    • Mosaic.
    • Spotting.

    Multiple infection is possible when several different viruses are present in the plant. This is more difficult to treat. Also, in the presence of viruses, symptoms may be absent, and the plant may die from the inside.

  6. Fungus - easy to recognize when yellowish brown spots appear. Leaves dry quickly wither and fall off. It begins to hit first the lower leaves, then rises up.
  7. Lack of moisture. If you are watering the plant enough, and it still does not have enough water, pay attention to the humidity in the room.

The first signs of a problem

  • Orchids, which will soon begin to turn yellow, are already beginning to show their problems with their whole appearance, you need to be attentive to him.
  • If the phalaenopsis does not take water or fertilizer, it means that he is "drunk", and at this moment it is better to stop, change the irrigation or fertilization schedule, and experiment with the care options.

What if the leaf plates are affected?

  • If it turns yellow from a burn, you need:
    1. Move it to the shadow.
    2. If minor leaves are damaged, it is better to leave, as they feed the entire plant.
    3. Spray with epin (an artificial biostimulant that helps with temperature changes, hypothermia, burns, etc.)
    4. Wait until the burnt leaves are dry. If this is difficult, you need to help them by sprinkling with activated carbon.
    5. Gently remove dried leaves.
  • Aging process. If your orchid is more than 5 years old, then it began to turn yellow for natural reasons.

    Observe:

    1. The rate of yellowing of the leaves is slow - several months.
    2. They turn yellow gradually from the lowest sheets.
    3. Despite yellowing, the flower grows and blooms.

    During this period, nothing is required from you. Do not interfere with this process or cut off the yellow leaves, as they still have a large supply of nutrients.

  • If the orchid turns yellow from lack of light:
    1. Take her out of the shadows.
    2. Water the flower with a solution of B vitamins.
    3. Place the plant under the phytolamp.
  • If the orchid has yellow leaves from an overabundance or lack of nutrition.

    A deficiency in orchids is extremely rare. Their food is arranged so that they do not need additional nutrients. But if this did happen, then watch the sheets.

    Important. It is difficult for non-professionals to understand what exactly the flower is missing, so it is better to take a complex fertilizer for orchids.

  • Leaf problems due to viruses and fungi:
    1. Get rid of bad roots.
    2. Apply specialized sprays for viruses and fungi.
    3. Transplant into new soil and pot.
  • What to do if the orchid lacks moisture? Make a new watering schedule and observe the leaves and root system.

    If the roots are dried up, they take all the moisture from the leaves.

Prophylaxis

DON'T DO IF YOU WANT TO HAVE HEALTHY PLANTS:

  1. Insufficient or excessive watering.
  2. Low humidity.
  3. Drafts.
  4. Lack of light.
  5. Incorrect feeding.

Pests

Not necessary:

  • Bath the plants together.
  • Change their pallets.
  • Too close.

How then to fertilize orchids? Orchids are fertilized in the active growth phase once every 2 weeks, and it is better that these are not standard fertilizers, but special ones for orchids.

Summary:

  • The main thing is to notice in time that something is wrong with the plant. You should be alerted by yellowing leaves, as this means an exact lack of trace elements in the soil.
  • If you correctly identify what is tormenting your plant, you can quickly help it recover.
  • If you are not sure what is missing in the soil, take complex vitamins, you can also use ash, onion broth.
  • When you have cured the yellowing, the young leaves will turn green, and the old ones will remain yellow.

I wish you the best of luck in your fight against yellowing!


Watch the video: Simple Recipe For Orchids Which Triples The Size and Blooms in Short Time (May 2021).