Can Christmas Cactus Get Mealybugs?

Christmas Cacti in California is known for being especially durable and pest-resistant, but they can become vulnerable to a number of predators, such as mealybugs. If you notice the presence of small bugs around your Christmas Cactus, you must take action immediately.

The trick is to keep your Christmas Cactus in a healthy state so that it can withstand a pest infestation. This means staying on top of their water requirements and fertilizing as necessary. So how do mealybugs infect Christmas cacti and what’s the best way to get rid of them? Let’s take an in-depth look.

The Dreaded Mealybug

Mealybugs are one of the most common pests that can infect Christmas cacti. They are tiny insects that are fond of sucking the sap from plants, leaving a trail of sticky honeydew in their wake. The easiest way to identify the presence of mealybugs is to look for white cotton, which may also appear as a brownish hue.

The worst thing about mealybugs is that their cotton appearance can be easily mistaken for mildew or fungus. Mealybugs, however, are extremely dangerous. They will feed on your plant’s foliage and try to spread their population to surrounding plants. This is why you should try to eliminate them as quickly as possible.

If allowed to eat your plants with impunity, you will notice their population multiplying quickly. This will eventually lead to devastating problems such as root rot that could be nearly impossible to fix.

Mealybugs are fond of hiding out in nooks and crannies, especially under the leaves, so you may not even notice their presence until they’ve already caused damage. For this reason, you should regularly inspect your Christmas Cactus to ensure they aren’t being fed on by mealybugs.

How Do Mealybugs Spread to Christmas Cactus?

It’s not clear how mealybugs spread to Christmas Cacti, but experts suggest that overwatering and over-fertilizing can attract the deadly pests. Mealybugs often prey on plants that are not doing too well in terms of health and are stressed because one or several care conditions aren’t correctly optimized.

For example, if the ambient temperature lies outside the ideal range, such as 60°F to 70°F, then the plant is at a greater risk of infestation.

High humidity is another culprit that supports disease and pests. For example, if the humidity is around 50% to 60%, it can attract mealybugs and other pests. We recommend using a humidifier to regulate the moisture levels of the ambient air to desired levels.

Finally, the Christmas Cactus in California does well when provided with good airflow. Poor ventilation will create moist conditions that will attract pests such as mealybugs.

An infestation that is allowed to go untreated will eventually stunt the growth of your Christmas Cacti and prevent it from blooming. In worse scenarios, it may even lead to root rot, which will cause their untimely demise.

Signs of a Mealybug Infestation

The most common sign of a mealybug infestation is stunted growth. Mealybugs resemble tiny dots of white cotton in the earliest stages of infestation. It is important not to confuse the white cotton with mildew or fungus and take action as soon as you notice them

Mealybugs feed on the foliage and leave a sticky residue called honeydew throughout the plant. Over time, the honeydew creates the perfect conditions for mold to form.

The cactus will start looking less healthy and turn a shade of yellow or brown. It may also lean to one side.

Some types of mealybugs have been known to fly, but they mostly spread by crawling. They can spread much faster if you have kept all our houseplants together. It is important to quarantine the plant once you have identified a mealybug infestation.

How Do I Get Rid of Mealybugs on My Christmas Cactus?

Ways of Getting Rid of MealybugsDetails
Use isopropyl alcoholDap a cotton pad with isopropyl alcohol and apply it on the affected foliage of the plant.
Dish soap sprayMix dish soap with distilled water and pour the mixture into a spray bottle. Spray the contents generously throughout the plant to discourage pests.
Neem oilApply neem oil on all parts of the plant, including the underside of the leaves to effectively kill pests and their eggs.
Use predatory bugsBeneficial bugs such as Green Lacewings with Ladybugs will deal with the infestation.

Mealybugs feast on the cacti’s foliage and suck their nutrients, damaging their tissue and leaving honeydew. Over time, the plant becomes weaker and susceptible to further problems, such as mildew and root rot.


The good news is that you can easily treat mealybugs with the aid of several pesticides. If you catch the infestation early, you may be able to use isopropyl alcohol to kill the pests. Dab a cotton pad with isopropyl alcohol and apply it to the affected area of the cactus. Make sure to dilute the alcohol so as not to burn the plant.

When you apply the isopropyl alcohol on the white fluff (that resembles cotton balls), you will notice that the mealybugs will disappear almost instantly.

In any case, you should check every inch of the cactus to ensure the pests have disappeared. Keep monitoring the plant every day to ensure that the bugs haven’t reappeared. Repeat the above stems if you see more mealybug activity.

But what if you’re dealing with a larger infestation that cannot be dealt with isopropyl alcohol? In this case, you will have to resort to a different solution.

Using Dish Soap Spray

A foolproof method for dealing with a larger infestation is to spray the plant with dish soap. You probably already have the ingredients on hand. Mix some dish soap with distilled water and pour the mixture into a spray bottle.

You can reinforce the mixture with neem oil to improve your odds of success. Neem oil is a natural pesticide that doesn’t contain harmful chemicals. It creates an additional layer of protection on the plant and makes it harder for mealybugs to feed on it.

Use this deadly combo of dish soap and neem oil 3 to 5 times daily. Spray the mixture all over the plant, including the nooks and crannies, so the tiny bugs don’t find a haven for shelter.

The neem oil clogs the airways of mealybugs, causing them to suffocate. You shouldn’t go overboard with the dish soap because it can damage your Christmas Cactus in high doses.

Using Predatory Bugs

A popular method of dealing with mealybugs is to kill them with the help of predatory bugs. A good solution is to pair up Green Lacewings with Ladybugs. This combo will get rid of several pests, including mealybugs and aphids.

The only problem with this approach is that the predatory bugs may not have an appetite to kill off all the mealybugs. This means you may still have to use pesticides, as discussed earlier.

Pruning the Damaged Foliage

After you have taken care of the mealybug infestation, prune the dead foliage and stems. Make sure to sanitize your hands after pruning. Sanitize the plant after disposing of the damaged foliage. Failing to prune the dead foliage will attract even more pests in the future. Furthermore, the dead foliage will also drain energy from the cactus and halt its growth.

DH7 Enterprise Red/Pink/White Christmas Cactus Thanksgiving Cactus (2 inch)

Wrapping Up

So there you have it, a detailed look at how you can deal with a mealybug infestation and keep your Christmas Cactus healthy. If you do spot white cotton on your plants, make sure to deal with the infestation right away. Quarantine the plant to contain the infestation and prevent them from spreading. Let us know how you dealt with a mealybug infestation and if your plant survived the ordeal.

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