How to Get Rid of Mealybugs on Houseplants, Succulents and Citrus

By the Garden Voila editorial team · Updated October 30, 2026 · How we verify

Mealybugs are small, soft, oval insects covered in white, cottony or powdery wax that cluster in leaf joints, along stems, under leaves and on roots, sucking plant sap. They cause yellowing, leaf drop, stunted growth and sticky honeydew with black sooty mold, and they are among the most common pests of houseplants, succulents, orchids, citrus and greenhouse plants. To get rid of mealybugs, isolate the plant, dab small colonies with a cotton swab dipped in rubbing alcohol, rinse plants with a strong spray of water, prune heavily infested parts, and treat with insecticidal soap or horticultural oil every seven to ten days for several weeks. Check roots and potting mix too, because root mealybugs hide below the soil surface.

How to recognize mealybugs

What are mealybugs?

Mealybugs are sap-feeding scale insects in the family Pseudococcidae. Unlike armored scales, they keep their legs and can crawl slowly throughout their lives, and they protect themselves with a coating of white wax. The Wikipedia article on mealybugs notes that many species are serious pests of greenhouses, houseplants and tropical crops, and that females are wingless, while the tiny adult males have wings and do not feed. The Washington State University PestSense fact sheet on mealybugs explains that they thrive in warm, protected environments, which is why they are so common indoors and in greenhouses.

Which mealybugs are most common?

What damage do mealybugs cause?

The University of Wisconsin–Madison Extension article on mealybugs describes how infested plants become weakened and sticky and why repeated inspection and treatment are needed to eliminate them from indoor collections. Mealybugs feed with needle-like mouthparts on plant sap. Light infestations may only slow growth, but large colonies cause yellowing and leaf drop, distorted new growth, dieback of shoots and, in severe cases, plant death. Their honeydew makes leaves sticky and supports sooty mold, which blocks light. Root mealybugs are especially sneaky: plants wilt and decline even when the soil is moist, and the cause is only found when the plant is lifted from its pot. On grapevines and some fruit crops, certain mealybugs also spread viruses.

How do you get rid of mealybugs on houseplants?

1. Isolate the plant immediately to stop crawlers spreading to neighbors, and check nearby plants carefully.
2. Remove visible mealybugs with a cotton swab or small brush dipped in 70 percent isopropyl (rubbing) alcohol. The alcohol dissolves their waxy coating. Test first on one leaf, since some plants with soft or hairy leaves can be damaged.
3. Rinse the plant with a strong spray of lukewarm water in the shower or sink, aiming into leaf joints and under leaves.
4. Prune heavily infested shoots and discard them in a sealed bag.
5. Apply insecticidal soap or horticultural oil labeled for indoor plants, covering all surfaces, including crevices. Repeat every seven to ten days for at least four to six weeks, because eggs inside the cottony sacs are protected.
6. Check the roots by sliding the plant out of its pot. If you see white, cottony patches on roots or the inside of the pot, see the root mealybug section below.
7. Keep inspecting weekly for at least two months after you stop seeing mealybugs. Small survivors hidden in crevices are the main reason infestations return.

Does rubbing alcohol kill mealybugs?

Yes, on contact. Isopropyl alcohol at about 70 percent cuts through the waxy coating and kills mealybugs quickly, which makes it an excellent spot treatment for small infestations on tough-leaved plants such as jade, snake plants, hoyas and orchids. It does not leave a residue that kills newly hatched crawlers, so it needs repeating, and spraying whole plants with alcohol can burn leaves, especially in sun. Use it on a cotton swab rather than as a general spray, and follow up with soap or oil for larger infestations.

How do you get rid of root mealybugs?

Root mealybugs live in the potting mix and on roots, where sprays do not reach. Remove the plant from its pot, shake or wash off as much soil as possible, and inspect the roots. Trim badly infested roots, rinse the remaining root system thoroughly, and repot into fresh potting mix in a clean or new pot. Some growers dip the cleaned roots briefly in warm water at about 120°F for a few minutes, which kills mealybugs, but this can injure sensitive plants, so it is a technique for experienced growers. Throw away old potting mix and wash pots in hot, soapy water. For valuable succulents, consider taking healthy cuttings as a backup.

Which natural enemies control mealybugs?

Outdoors in warm climates, these natural enemies often keep mealybugs under control unless ants protect the colonies or pesticides kill the predators. Controlling ants with sticky trunk bands on shrubs and trees helps them do their job. Note that the larvae of the mealybug destroyer are covered in white wax and look like large mealybugs, so check before squashing anything that moves quickly.

How do you prevent mealybugs?

• Inspect new plants carefully, including leaf joints, under leaves and the root ball, before buying or bringing them home.
• Quarantine new arrivals for two to four weeks away from your other plants.
• Avoid overfeeding with high-nitrogen fertilizer, which produces soft growth that favors mealybugs.
• Keep plants clean by wiping leaves and removing dead leaves and debris where mealybugs hide.
• Do not reuse old potting mix from infested plants, and clean pots before reuse.
• Control ants on outdoor plants.
• Check plants coming indoors in fall after summering outside.

Mealybugs on succulents, orchids and citrus

Succulents and cacti

Mealybugs hide deep in rosettes and spines and on roots. Use a cotton swab with alcohol for visible colonies, check roots when repotting, and keep plants in bright light with fast-draining mix. Avoid getting water trapped in rosettes for long periods.

Orchids

Look in leaf bases, under leaves and around flower spikes. Wipe off colonies with alcohol and treat with soap or oil labeled for orchids, avoiding open flowers, which spot easily.

Citrus and fruit trees

Citrus mealybug clusters where fruits touch and in leaf joints. Outdoors, natural enemies usually manage it; indoors on potted citrus, combine alcohol spot treatments with horticultural oil. See Meyer lemon tree in a pot for container citrus care.

Coleus, hibiscus and jade

These are mealybug magnets indoors. Take healthy cuttings from clean shoots to restart badly infested coleus, and treat jade and hibiscus with alcohol spot treatments followed by soap or oil.

Mealybugs vs other white pests

If you see white fuzz but no insects, it may be powdery mildew or a fungal growth instead. The plant problem identifier and the pest identifier can help you sort it out. For related sap-feeders, see our guides to aphids, whiteflies and spider mites.

How long does it take to get rid of mealybugs?

Usually four to eight weeks. Mealybug egg sacs can hold hundreds of eggs that hatch over one to two weeks, and newly hatched crawlers hide in crevices. Persistent weekly treatment for at least a month, followed by inspections for another month, is what finally breaks the cycle. Heavily infested, inexpensive plants are often better discarded so they do not keep reinfesting the rest of your collection.

Can mealybugs spread between plants?

Yes. The tiny crawlers move from plant to plant where leaves touch, are carried on hands, tools and clothing, can be blown short distances, and are carried by ants. They also hitchhike on new plants, cuttings and reused pots. Keep infested plants isolated, wash hands and tools after handling them, and space plants so foliage does not touch.

What is the mealybug life cycle?

Most mealybug females lay 100 to 600 eggs inside a cottony egg sac over one to two weeks, then die; the longtailed mealybug instead gives birth to live crawlers. Crawlers are tiny, pale yellow-orange and mobile, and they settle in protected spots within a day or so. They feed and molt several times, gradually building up their waxy covering, and become adults in about six to ten weeks depending on temperature. Indoors and in greenhouses, where it is always warm, several overlapping generations occur each year, so every stage is usually present at once. Treatments timed to catch crawlers, which have little wax, are the most effective, which is why repeated sprays a week apart work far better than a single heavy application.

You can find guides to related pests and diseases in our plant pests and diseases hub.

Mealybug FAQ

Patience pays with mealybugs: steady weekly checks and treatments for a couple of months clear even stubborn infestations, while one-off sprays almost always let a few survivors restart the colony.

Can you prevent mealybugs with systemic products?

Systemic insecticide granules sold for houseplants can suppress mealybugs, including root mealybugs, but they are slow, are not suitable for edible plants such as herbs and citrus you will harvest, and can harm pets that chew leaves or soil. Read labels carefully and choose the gentlest effective option first.

Last reviewed October 2026. Key references: Washington State University PestSense, Mealybugs; University of Wisconsin–Madison Extension, Mealybugs; Wikipedia, Mealybug.

Where mealybugs hide, and why one treatment is never enough

Iowa State Extension’s houseplant pests: mealybugs describes them as small, fuzzy, white insects that are often beneath leaves, on stems or at the base of leaf stalks, so they are not always easy to see. Succulents are a common food source. The author’s method is blunt but effective: kill them by hand with a cotton swab dipped in alcohol, and also use an insecticide labelled for mealybugs on your specific houseplant, since soap-based products are included. Neither method kills 100 percent, so the two are combined, and the plants are checked at least weekly. After finding mealybugs the author spends about an hour a week inspecting each plant and swabbing, so expect a routine rather than a one-off fix.

• Inspect new plants before bringing them near others, and check leaf joints, undersides and the base of petioles.
• Swab each visible insect and the white wax; test alcohol on one leaf first, as some plants are sensitive.
• Use only products labelled for your plant, and repeat at label intervals.
• Keep checking weekly even after the plant looks clean.

Mealybugs also produce honeydew that can feed sooty mold; see our sooty mold guide. Use our plant problem identifier to confirm pests.

Reviewed October 2026. Sources: Iowa State University Extension, Houseplant Pests: Mealybugs