If not cared for properly, orchids can often be plagued by diseases and pests. We have summarized what helps against this for you.

Unfortunately, the orchid is not spared from diseases and pests

The orchid is just standing on the windowsill in a rich green and with bright flowers - but the next moment the leaves turn yellow or fall off. This and many other signs can be an indication of a disease of the popular houseplant, which sometimes gets into the house when you buy it. We present the most common diseases and pests affecting orchids and what you can do about them.

Orchids: The most common diseases

As with any plant, the orchid has some signs by which you can recognize a disease. The following diseases are common:

Rot

Probably the most common disease is root rot, which can reach up to the leaves. This is caused by bacteria that find optimal conditions due to improper watering.

Probably the most common disease is root rot

What can you do about it?

  • Water only once a week
  • Avoid waterlogging
  • Repot orchid
  • Dispose of in an emergency

Accordion Growth

The form of the leaves, also known as wrinkling, which occurs more frequently in orchid species such as Miltonia or Oncidium, is a Response of plants to changing environmental conditions. The leaves of the orchids only grow under the right conditions, such as suitable humidity and watering as well as the right temperature. In the event of deviations, the plant reacts by stopping growth. This change causes the characteristic growth, which is not particularly bad, but indicates incorrect care.

What can you do about it?

  • Inform about the optimal site conditions for orchids
  • Water spray for high humidity

Brown spots on leaves

This symptomoften appears as dark spots that spread over time. This is usually a fungal infection that is also contagious to other plants. Bacteria can also be responsible for the disease.

Dark spots on the leaves can be caused by a fungal infection or bacteria

What can you do about it?

  • Isolate Plant
  • No spraying with water
  • Remove affected plant parts
  • Enough air movement
  • Disinfect knives

Sunburn

Some types of orchids are more sensitive to light than others and do not tolerate blazing sun well. If there is too much sunlight, spots may appear on the plant.

What can you do about it?

  • Change location
  • Choose a place behind the curtains (no direct sunlight)

Below we have listed other symptoms that are also common in orchids.

Orchids: leaves turn yellow

Basically, orchids such as Phalaenopsis can get yellow leaves from time to time in winter, which then fall off. As long as the plant continues to sprout, there is no need to worry. If, on the other hand, several yellow leaves appear at the same time, this can be a sign that the roots have too little space and are rotting. A lack of light can also be responsible for leaf fall.

Orchids can occasionally get a yellow leaf in winter, which then falls off

What can you do about it?

  • Repot every two years
  • Find a bright location
  • No direct sunlight

Orchids: flowers fall off

Like the discoloration of the leaves, the dropping of the flowers is also a sign of the wrong site conditions for orchids. Reasons can be a strong change in temperature as well as drafts. Too much or too little sun and a lack of water can also lead to the buds drying out.

What can you do about it?

  • Ensure constant conditions
  • Avoid direct sunlight
  • Avoid a site on the north side in winter

We recommend the following products for magnificent orchids:

  • Floragard orchid soil: peat-free special soil for the special requirements of your indoor orchids. Pine bark and coconut chips ensure a light and airy structure. Premium fertilizers such as guano providefor strong and vigorous plants.
  • Cuxin liquid fertilizer for orchids: The special fertilizer for orchids contains many organic nutrients for lush flowering. Iron chelate ensures deep green leaves.
  • Cuxin Foliar Care Spray: Care spray for orchids based on an ionic wetting agent. The trace elements it contains balance the moisture balance of orchids in a dry environment and thus ensure fresh green leaves and a high flowering rate.
Cuxin liquid fertilizer for orchids, 400 ml€5.95Details →
Mealybugs are one of the most common pests on orchids

Mealybugs on orchids

Mealybugs are a common problem in orchids and can be identified by small, furry nests under the leaves. These are lice that feed on the sap of the orchid and thus damage it. An infestation with mealybugs often leads to further infections.

What can you do about it?

  • Remove nests with a cotton swab soaked in water or alcohol
  • Wipe the plant thoroughly but carefully

Scales on orchids

If you discover small animals with shield-shaped backs on your orchid, they are most likely scale insects. Like the mealybugs, the animals feed on the sap of the plant and thereby harm it.

What can you do about it?

  • Dab scale insects with tea tree oil

Aphids on orchids

As with many other plants, an orchid can also be attacked by aphids in rare cases. If you notice small white or black creatures, your orchid has probably caught the annoying pests.

What can you do about it?

  • Wiping the lice with light soapy water

With the right care, the risk of your orchids being attacked by diseases or pests can be significantly reduced. For example, in this article you will learn how to fertilize orchids properly.

Category:

Houseplants