Bumps on orchid leaves are a sign of an unhealthy plant, or it can be a natural growth for many orchid species. As orchids are sensitive plants, bumps on leaves can sometimes be a cause for concern; other times, they’re less serious than they look.Bumps on Orchid Leaves

However, there are ways to remove them and ensure the health of your plants, as long as you know their underlying cause. Come along as we discuss the possible reasons for the unsightly bumps that occasionally appear on plant leaves and several ways to treat and remove them.

What Can Cause Bumps on Orchid Leaves?

Bumps on orchid leaves can be caused by including pests, or due to Edema, and fungal or bacterial infections. It can also be caused by physical damage that can hurt the plant, and lastly, due to its natural growth developing as such.

Sometimes, bumps on leaves can be a sign of diseases or infections. However, this isn’t always the case, as other factors can also come into play. These other factors may include insect pests, environmental factors, or natural causes. It’s very important to examine your plant’s properly to determine the cause of the bumps, so you can be sure of the right course of action to take.

– Pests

Unsurprisingly, pests come up when you talk of common orchid problems. These pesky bugs have a way of showing up everywhere on plants, leaving behind terrible effects. Pests like Scale insects appear like brown spots on orchid leaves, giving the illusion of black spots. If you rub your leaves, then you will know you’re dealing with these insect pests.

Also, the feeding action of pests like spider mites, Thrips, Mealybugs, and scale insects can cause blisters on orchid leaves. Despite their small size, these bugs will suck the sap from orchid flowers and leaves, which can cause little bumps to appear over time. To prevent the bumps from appearing, you need to deal with the problem, which in this case is pests.Reasons for Bumps on Orchid Leaves

– Edema

Edema on orchid leaves is a condition that happens when your orchid’s roots absorb far more water than they let out through transpiration or when leaves take humidity from the atmosphere as opposed to transpiring. This causes a transparent pocket on the surface of the leaves that slightly resemble scales, and the closer you look and examine, you would see that Edema occurs due to your plant’s growing conditions.

Edema can occur in any orchid species, including heat-loving varieties like Phalaenopsis orchids or cool-growing orchids like Cattleya, as long as the plant is absorbing more water than it can transpire per time.

So, it’s safe to say that the root cause of Edema is overwatering. Although this condition is harmless to your plants, the blisters or bumps it causes can be unsightly that are bumps on the leaves of the plant.

– Fungal or Bacterial Infections

Another possible cause of bumps on leaves is fungal or bacterial infections, and you must know that these conditions occur as a result of an orchid’s poor growing conditions. Most times, the bumps that surface on your plant’s leaves are permanent.

However, in some cases, like when you have a scale infestation, the bumps you see are pests. The cause of the bump often determines if it’ll be temporary or permanent.

In addition to this, you would see that when you water the plant excessively, it provides a conducive environment for bacteria and fungi to grow. In the same vein, poor air circulation and excessive humidity cultivate the ideal conditions for these infections to thrive. If the infections persist on your orchids, you may notice bumps or elevated yellow or brown patches on their leaves.

Moreover, you will also notice that bacterial or fungal infections will adversely affect your plants. So, you’ll likely be dealing with two stressors; the infections and the bumps. While there isn’t a lot to do about the bumps, there are certain steps you can take to treat the infections and prevent them from growing on other leaves.

– Physical Damage

It’s possible for your orchid plants to get injured when you’re moving things around or when you’re changing their location. Accidental physical harm can cause insignificant bumps or elevated patches on the plant’s leaves.

While this might be a minor issue, the bumps will impact the plant’s overall appearance and its aesthetic development. It’s best to prevent or avoid physical harm to your plants as much as possible.Physical Damage in Orchids

– Natural Growth

For many orchid species, slight bumps, rough patches, or raised areas on leaves are natural. These lumps are normal to their natural growth and are not deemed signs of health problems.

In fact, many of these wrinkles or bumps may be a defining aspect of the plant’s appearance, adding character and contributing to its distinctive beauty or appeal. So, if you notice bumps on your plant’s leaves, it isn’t necessarily terrible.

What Are Solutions For Orchid Leaves that Have Bumps?

The solutions for orchid leaves that have bumps are to get of the pests by using natural insecticides, and you can also take the right care measures to avoid Edema. You must also treat all fungal or bacterial infections, protect the plant from physical measures, andWays To Fix Bumps on Orchid Leaves

– Apply Natural Insecticides

When you notice the bump, you need to identify the pests plaguing your orchids to know what kind of treatments to employ. Many insect pests are easy to eliminate. However, a few of them might need more intense treatments.

Scale insects, for example, require extensive treatment using rubbing alcohol, pesticides, insecticidal oils, and soaps. You can use the same treatments for many other types of pests.

Choosing orchid-safe products is crucial when trying to eliminate pests, so you don’t have a bigger problem. Ideally, leave the bumps on your plant’s leaves alone, except if they’re infected, in which case you will have to trim them off. Make sure to use sterilized cutting tools for this process, so you don’t cause more problems for your plants, such as other bacterial development, in the long run.

– Take The Right Care Measures

Since Edema is primarily an issue that stems from overwatering, the first step to take when you notice the bumps on your plant’s leaves is to adjust your watering habits. Orchids typically hate sitting in water, so ensure that your potting mix drains correctly.

Let your potting mix get a bit dry on the surface in between watering sessions to prevent overwatering. Also, you can adjust the timing of your watering to early mornings, as orchid roots take up water faster in cool weather.

Reducing the humidity levels around your plants and increasing air circulation can also help to curb Edema, as these conditions typically influence your plant’s health. Orchids with low nutrient intake are more likely to get Edema. To prevent this, fertilize your plants properly and frequently.

These are all preventive measures, as you can’t really do much about the bumps that result from Edema.

All you can do is be patient till the affected leaves fall off naturally, and new ones grow. For this, you must make sure that you give it the right requirement if the given condition is as such because the best way to keep your plant’s leaves from developing bumps is by maintaining optimum orchid care conditions.

Ensuring your plants grow in conditions that support their growth entails supplying the appropriate amount of water, light, and nutrients. Additionally, you need to consistently watch the temperature and humidity levels, making sure they stay within the optimum range that is just right for your plants.

– Treat All The Fungal or Bacterial Infections

The spots that show up on leaves due to bacterial or fungal infections have to be dealt with, as they can spread and do more harm if left unchecked. Treat your infected plants by trimming off the affected leaves and applying a suitable fungicide or bactericide to the cut parts.

Ensure to use sterile tools for this process to prevent the spread of these infections. If the infection is advanced, make sure to check your plant’s roots and trim off the affected bits.

You must try to ensure that your plants have adequate water regularly, but not to the extent that they’re constantly drenched, to avoid bacterial or fungal infections. Check that your potting mix is properly draining, and place your plants in a location with sufficient ventilation.

As a rule, you want to avoid overcrowding your plants so that there’s proper air circulation and no risk of spreading disease or infection.Bumps on Orchid Leaves Details

– Protect From Physical Damage

If your orchids become damaged during transportation and bumps on leaves, develop on their leaves. As a result, there is very little you can do about the bumps. You can only hope to avoid damage to your plants whenever you’re moving them around.

It’s best to protect your plants and keep them away from areas or items that can bump or scratch them. The general aim is to protect your plants from harm, so they don’t develop tiny bumps as a result.

In addition, when this matter is caused, and the bump left is a naturally grown one on leaves, it can appeal to some because nothing caused it, but this is how it grew, as you give it the right necessities to grow and develop. If physical trauma or environmental stress is the cause of the bumps on your leaves, and naturally, they are growing as such, they may gradually go away on their own if you change some of the circumstances.


As you might have guessed, bumps on your orchid plants’ leaves don’t always mean something terrible; however, on the flip side, it can mean your plant is unhealthy. Go through some important takeaways below:

  • Scale on orchid leaves may appear like dark raised bumps, so you should focus more on treating the underlying issue rather than removing the bumps if other factors like diseases or pest infestations bring them on.
  • Physical damage to your orchids can also cause elevated patches on leaves, however insignificant they may be.
  • Some orchid species naturally have bumps or rough patches on their leaves, which add to their beauty or appeal.
  • Edema is a condition caused by overwatering that causes bumps on plants’ leaves.
  • If anything, the risk of Edema should serve as a reminder to keep your plant’s growing conditions at an optimal level, so make sure to provide the right humidity and light.

Now that you know the several things that can cause bumps on your leaves, you can select the best ways to prevent them, using this article as a guide.

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