Neem oil insecticide is everything a gardener could want. Additionally, regularly wiping leaves with a damp cloth can help remove the small white bug before you notice them. The females can look like small patches of cotton, especially when laying eggs. Wash your hands after you come into contact with them to be sure you don’t have a problem. Fortunately, if you act quickly to eliminate mealybugs, you can save your plant and limit the damage. Isopropyl alcohol kills many houseplant pests, including mealybugs on contact. A large enough infestation will cause plant death. With the exception of the longtailed mealybug, the mealy bug life cycle consists of an egg stage, a nymphal stage sometimes referred to as the “crawlers” stage, and the adult mealybug. If you don’t get rid of mealybugs fast, the plant damage can be so extensive that they cause the houseplant to die. These unarmored scale insects lack the semi-rigid or rigid shell that many other scale insects have. Mealybugs look like fuzzy tiny white bugs crawling on plant leaves and stems. As an Amazon Associate, I earn from qualifying purchases. This cottony mass is often mistaken for downy mildew. A lack of humidity is one of the main reasons why this parasite appears, which absorbs nutrients from plants. (1). When using neem oil as a homemade pesticide spray, it’s vital to remember that it takes time to work. The force of water should be enough to dislodge the majority of the tiny white plant bugs. Have you battled with mealybugs before? There is a form of mealybug which forms on cacti as well. Visually similar to the obscure mealybug (mentioned below), it is best identified by the color of its defensive excretions, which are a reddish-orange in hue. These mealybugs have a long, oval-shaped body which is dark in coloration, but covered in a white waxy secretion. 3. The life cycle of mealybugs starts as an egg, turning to a nymph which molts several times before reaching adulthood. Maconellicoccus hirsutus, ‘Pink hibiscus mealybug’. Mealybugs suck sap from plant phloem, reducing plant vigor, and they excrete sticky honeydew and wax, which reduces plant and fruit quality, especially when black sooty mold grows on the honeydew. Source: Rinaldo R, Ants tending citrus mealybugs and nymphs. They of course also go after citrus, as their name would imply. Light to moderate mealybugs infestation can be easily and successfully treated. Along with the well-known aphids, the mealybug is one of the most common and harmful pests for our plants. A common greenhouse pest or nursery pest. Fill a spray bottle with 1 quart (1 l) of lukewarm water and add a teaspoon of liquid soap such as Castile soap or other liquid dish soap. Root feeding mealybugs. Different types will prefer leaves, stems, the plant’s base, the roots, and even the fruit in some cases as a home. Thoroughly inspect all parts of the plant—around leaf joints, under leaves, and in the top layer of soil around the stem. Pineapple mealybugs are the root cause of many pineapple crop failures, as they cause pineapple wilt (also referred to as mealybug wilt or edge wilt) and mealybug stripe. Mealybugs, which usually infect the plant bodies, can easily be identified and contained, but when it comes to root mealybugs, they are extremely hard to detect. These small beetles were originally transported to the US from Australia in the 1890’s to help clear up citrus mealybug infestations. Cottony, glassy filaments of wax and cotton-like egg pouches may also be noticed on the plant. Getting rid of them is not only difficult but cumbersome too. It really depends on the particular species and plant as to where they’re most likely to be found, but it’s quite likely that a buildup of waxy secretion will be visible, especially if eggs are present. For example, a sticky honeydew secretion encourages black sooty mold growth. You’ll find out about the life cycle of mealybugs and natural ways to rid your houseplants of these tiny critters. Depending on the species of mealybug, you will find them on an ever-increasing number of food crops, tropical plants, and other ornamentals. Soap spray can effectively kill mealybugs. Source: entophile, Growing Cucumbers: The Ultimate Guide To Cucumis Sativus, African Violets: Sensational Saintpaulias You Can Grow At Home, Mealybugs, longtailed mealybug, long-tailed mealybug, citrus mealybug, Gill mealybug, Gill’s mealybug, Comstock mealybug, grape mealybug, solenopsis mealybug, obscure mealybug, tuber mealybug, pink hibiscus mealybug, coconut mealybug, pineapple mealybug, and a number of other names, Pseudococcus longispinus, Ferrisia gilli, Pseudococcus comstocki, Planococcus citri, Pseudococcus maritimus, Phenacoccus solenopsis, Pseudococcus viberni, Pseudococcus affinis, Maconellicoccus hirsutus, Nipaecoccus nipae, Dysmicoccus brevipes, Pseudococcus brevipes, Dactylopius brevipes and many more. Mealybugs look like small oval white bugs. Citrus mealybugs don’t have the same long tail that Pseudococcus longispinus has, but they do impact some similar plants. The newly hatched nymphs range in color from yellow to pink. The second step should be eradication of the little white bugs by spraying or washing them with natural mealybug killer products. So what can you do to get rid of them? So, to confirm the presence of mealybugs, identify the minuscule bugs by their oval white bodies with tiny spines. Black patches on plants with stunted growth can help identify the presence of mealybugs. However, the average adult female can lay 300-600 eggs, making population growth startlingly fast. However, these voracious plant-suckers can literally suck the life out of your plants if you’re not careful. Stunted growth, yellowing leaves, leaf drop, are all ways that these tiny fuzzy white bugs damage plants. Discard contaminated soil in the trash can, rather than putting it into compost. What is neem oil? Indoor ornamentals may be at risk from the citrus mealybug. Some of the most commonly-farmed mealy bugs include the pineapple mealybug, citrus mealybug, and the pink hibiscus mealybug. Source: Dis da fi we, Ants tending pink hibiscus mealybugs and crawlers. An uncommon, but equally-effective beneficial insect is the mealybug destroyer, Cryptolaemus montrouzieri. Some of these may be affiliate links, meaning we earn a small commission if items are purchased. Dysmicoccus brevipes, ‘Pseudococcus brevipes’, ‘Dactylopius brevipes’, ‘Pineapple mealybug’. Plants that are too nutrient-dense tend to be high targets, as are ones which are saturated with lots of plant juices. Here’s a list of some of the best ways to eliminate them. Whereas, in cold climates, mealybugs are less common and seen more in the spring and summer. Only a tenth to a quarter of an inch long, tiny mealybugs don’t look particularly dangerous. While you're here, why not follow us on Facebook and YouTube? Phenacoccus solenopsis, ‘Solenopsis mealybug’. The easiest way to identify mealybugs is by their fuzzy white appearance. The adult female mealybugs will mate with the males, lay eggs, and continue to eat up the plant. Isopropyl Alcohol 70% The first method is very simple: get a bottle of rubbing alcohol and a cotton … The citrus mealy bugs have short filaments of equal length distributed around their bodies, and can occasionally have a dark stripe running down the back. Mealybugs can easily crawl from one plant to another, especially when leaves or branches overlap, so one contaminated plant could spread mealybugs to all your houseplants. Mealybugs usually enter a greenhouse on infested plant material. Fruit may drop prematurely, and stunted plants may not be able to produce new leaves. Here are other signs of plant damage when it is infested by mealybugs: The first step in getting rid of mealybugs on plants is to isolate the affected plant to prevent it from infesting other plants. For instance, the cypress tree has a mealybug that will hide in the crevices and just underneath its patchy bark. Mealybugs are small crawling creatures measuring about 2 mm long. Mealybugs, sometimes called woolly aphids, leave behind a telltale white cottony coating on the plants. Mealybugs can also come from the fresh produce from the store. Ants spread the mealybugs infestation as well. However, it can be found there now, as well as South America, Australia, New Zealand, and Iran among others. Using organic soaps to get rid of bugs doesn’t pose any health threat to kids and pets. The Comstock mealybug is common in the San Joaquin Valley area of California, and primarily goes after lemon trees. There is also scientific evidence for the effectiveness of using neem oil solutions to eradicate mealybugs. Because mealybugs feed on sugary plant juices (photosynthates), their waste contains a high sugar content and is referred to as honeydew. Mealybugs are a type of insect belonging to the family Pseudococcidae. According to the University of California, mealybugs have a small, segmented body that’s covered with wax. The white cottony mealybug eggs stick to leaves, bark, or twigs. Apart from being toxic to humans and pets, the pesky bugs can build resistance to chemicals. While feeding, mealybugs may inject toxic saliva into plant tissue, and excrete copious amounts of honeydew that serves as an excellent growing medium for black sooty mold fungi. Repot your plant with an appropriate fresh potting mix. You can also identify mealybugs by the damage they do to plant foliage. Once the adult female has laid all of her eggs, she will die off. These pinkish mealy bugs are usually covered in white wax, and may also have a covering of long, crystalline filaments. However, there are variations of mealybugs that prefer ornamentals or other trees. The female mealybugs are the ones that do the main damage to the plant. Check out my post on ant control tips for good ways to get rid of them! If you don’t get rid of mealybugs, they can end up killing your plants. They are active early on, but move little once a suitable feeding site is found.Note: There are approximately 275 species of mealybugs known to occur throughout the United States. Mealybugs like lush foliage, so avoid over-fertilizing with excess nitrogen. For example, mealybugs are common in succulents where they hide in the tight crevices between fleshy rosette leaves. Most of the mealybugs that I focused on above are those which are common on fruit or nut trees or on food crops. Mealybugs like plants with high nitrogen levels and soft growth, so avoiding the mealybug-approved environments is important. Mealybugs can ruin the appearance of your indoor and outdoor plants and can cause a significant amount of damage. For such small creatures, mealybugs can be surprisingly hard to remove. Avoid overwatering and excess fertilizing. For longtailed mealy bugs, the life cycle is only the crawler stage and adult, as female longtailed mealy bugs give birth to live young. The tiny bugs crawl around the plant, leaving a waxy substance on them. Mealybugs or woolly aphids as they are called, are small white insects that are usually found in warm and moist areas. There are over 2200 species of mealybugs, but only a portion of them are considered common garden pests. (1), Related: Common Houseplant Pests: Types, Identification, and Control, Make sure to inspect and isolate new plants before bringing them indoors to prevent mealybugs infestation of other plants. Identifying mealybugs correctly is key to eradicating them. They also leave behind sticky honeydew that can attract other plant pests. They will die out in a couple of days from starvation. Spray your succulents, cacti, or tropical houseplants regularly with neem oil for it to be effective. Home » Mealybugs: Making Pseudococcidae Pests Go Away For Good. Apart from leaving behind their telltale cottony residue, they affect plant growth in other ways. Thoroughly wash the container with warm soapy water. A mealybug infestation will cause leaves to lose color and wilt. We're always looking to improve our articles to help you become an even better gardener. While they do spread some viruses to grape plants and can transmit other plant diseases, they don’t bite humans. Since adult males can’t feed, they die very quickly. A cotton bud dipped in alcohol does a great job. You can identify a mealybug houseplant infestation by their cotton-like residue they leave on plant leaves and stems. Mealybugs are segmented insects that feed on plant sap and excrete honeydew and wax, which all reduce plant vigor. These pests tend to live in and around what they eat. Rinse the roots with water to ensure that no root mealybugs are lurking there. The name originates from the pair of long tail filaments which extend from its rear, and often are longer than its body. Among those are many different food crops like tomatoes, potatoes, melons, and eggplant. Once you’ve read the information below, you should know everything you need to get rid of these little pests and keep them out! All mealybugs consume the saps or juices of the plant on which they attach themselves. The grape mealybug is from and resides mostly in central and northern California. Source: treegrow, Pink hibiscus mealybugs. It can be found on the leaves, fruit, or base of the host plants. If you coat all plant surfaces, the neem oil will slow or stop feeding on your plants by a wide variety of pests. Look for tiny white creatures that look like grains of rice. Heavy mealybugs infestation is much harder to control and it puts all other plants at very high risk. Finding safe, non-toxic pesticides for the garden that actually work can be a challenge. The short-lived adult male mealybug resembles a two-winged fly and are rarely seen. The reason why soap spray work effectively is that it coats mealybugs with soapy liquid that helps to break down the wax. This waxy appearance can become powdery, which gives the bugs a furry appearance. Pseudococcus viberni, ‘Pseudococcus affinis’, ‘Obscure mealybug’, ‘Tuber mealybug’. They bite into plant tissue to feed off their sap – yikes! Some species of mealybugs also live in plant soil and attack roots. It’s best not to use soil from your garden. This article is a complete guide to getting rid of mealybugs on plants. Pseudococcus longispinus, ‘Longtailed Mealybug’, ‘Long-Tailed Mealybug’. Lacewings also eat the eggs, but will help control both crawlers and the adult scale. Others merely secrete extra protective wax and live openly on cactus pads or leaves where they are more exposed. Our GET OFF ME! Take infested plants to the bathroom and rinse off mealybugs under the shower. Pseudococcus comstocki, ‘Comstock mealybug’. The full mealybug life cycle is between seven and ten weeks. These pests are regularly farmed by ants who provide them shelter and protection and keep them clean. Mealybugs on plants look like small white bugs or they may appear as white fuzzy stuff on plant leaves and stems. A little more about me. Light, early infestations can be taken out with a cotton swab and some rubbing alcohol. Mealybug identification is usually done by the clumps of furry cotton wool-like fuzz on your plant—either colonies of bugs or collections of egg sacs. Blast mealybugs and other scale insects off your plants with a hard spray of water. Males do not feed after pupation, and so they will live for only a couple days, mating with any females they might find before expiring. Aphids are familiar, tiny sap-sucking green insects, but mealybugs are easier to miss: they are rather good at pretending to be bits of fluff. This pest is mostly found in pineapple-growing regions of the world, including all of the Hawaiian islands. Falling under the larger category of scale insects, mealybugs are part of the family Pseudococcidae. Both nymphs (referred to as crawlers) and adults feed on plants and cause stunting, leaf yellowing, and distortion of plant parts. Spraying a neem oil solution is an excellent natural pesticide to kill mealybugs and other indoor plant pests. Some other types of houseplant pests cause similar plant damage as mealybugs cause. This is the period of time when mealybugs travel and spread to other plants.   Organic gardeners can control this pest in several ways without resorting to toxic pesticides. As a general rule, you should always check new houseplants for signs of pests. To get rid of soil mealybugs, you need to completely replace the soil. In farm situations where multiple plants of the same species are close together, it’s common to see initial damage on the outer plants of a field. These are often confused with the obscure mealybug, and are best identified by the excretions and their preferred foodstuff. These are unusual in that the wax they produce is a bright yellow color. Looking at close-up pictures of mealybugs, you’ll notice microscopic spines sticking out from their oval bodies. A: No, not really. This long, oval-bodied mealybug has small filament protrusions from its sides. To repot an infested plant, carefully remove the root ball and shake the soil into a garbage bag. Blast mealybugs and other scale insects off your plants with a hard spray of water. Then very quickly, clumps of white furry stuff suddenly appear on plant leaves and stems. Mealybugs are a sucking pest that can slowly kill plants. Withered leaves and falling leaves are not uncommon. Individual mealybugs are tiny oval-shaped and hard to spot. Because mealybugs can reside in soil, it may be a good idea to repot your plant in fresh, sterile soil. Mealybugs often come from new houseplants you bring home. Too much can harm the leaves. In these cases, the only way to identify mealybugs is by the plant damage such as yellowing leaves and wilting growth. Hatched nymphs, or “crawlers”, have vestigal legs and will move around. When excreted, the wax forms a series of triangular, pyramid-like spikes that protrude from their bodies. They can be quite active and quickly infest nearby plants, so the first action is to isolate the affected plant and keep a keen eye on others that were near it. This article contains incorrect information, This article is missing information that I need. Spray the plant as often as necessary until your plant is pest-free. With some patience, you can soon get these pesky fuzzy bugs under control. If you have a mealybug infestation on outdoor plants, you can turn the garden hose on the plants. As infestation spreads, the pests work their way inward. They usually grow naturally in warm and humid climate. Other sources of mealybugs are contaminated potting soil, or putting houseplants outdoors in the summer. If not controlled, mealybugs can harm plants because they feed on the stems. Honeydew is sticky and can support the growth of sooty mold fungi, which are not harmful to the plant, but if present in high enough concentrations, can impair photosynthesis in the leaves. Products such as Botanigard ES have a low-risk biological fungus in it. Mealybugs can go unnoticed in the early stages of infestation. Also, they like to lurk under leaves, between fruit, in stem joins, or on stems near the soil. Small nymphs, called crawlers, are light yellow and free of wax. They will die out in a couple of days from starvation. Mealybugs and other pests can come into homes in contaminated soil. Unfortunately, by the time you identify mealybugs by the white furry cotton, the infestation is already extensive. The pink hibiscus mealybug poses the greatest hibiscus threat because of its toxic, leaf-curling plant-stunting saliva, but all mealybugs disfigure and weaken the plants. Mealybugs are tiny, cotton-like, and normally hang out in white, web-like stuff on stems and leaves of succulents and green leafy plants. Making sure the plants that tend to be targets of mealybug infestations are not overwatered or overfertilized is a key step in making sure the plant is unappealing to these bugs. Let me know in the comments! Nymphs tend to have less wax buildup and thus look more goldenrod or orange. Then check around the rim of the pot and its base. Some forms of scale insects build up at the joint of leaf and stem, where they can have some shelter from the elements. Regain control of your garden with various methods to kill and remove the pesky bugs. While not all mealybugs are cared for in this fashion, many species can be. Gardening And Landscaping Mealybugs are sap-sucking scale insects that can do a lot of damage to your houseplants or outdoor plants. Keeping the ants at bay reduces the chance that they’ll be protected and cared for, which makes it easier to eliminate them entirely. A very wide majority of food and ornamental plants and trees. Check under leaves, in new leaf folds, and around the growing tips for signs of infestation. Photograph: Gap. A fresh, sterile potting soil helps ensure that there is no trace of mealybugs. Mealybugs on outdoor plants tend to live in colonies. Make a neem oil spray to get rid of mealybugs on houseplants by mixing two teaspoons of organic neem oil and one teaspoon Castile soap with 1 quart (1 l) of lukewarm water. Isolating plants prevents the bugs from spreading to other plants. Neem oil is especially useful on mealybugs in their nymph stage. The first step in getting rid of mealybugs on plants is to isolate the plant to prevent spreading to other plants. After an hour or two wash the plant with a damp cloth to reduce the chance of the soap damaging the plant. Feeding plants should give them just enough nutrients to grow healthy. Except for neem oil. Soap sprays and oil sprays can also help control mealybugs without the disruption that can be caused by toxic chemical sprays. They also suck sap from your plants, which can weaken and damage your garden, especially if you have a major infestation. Mealybugs can hide in between succulent leaves, in the joints of houseplants, and even in the soil. These tiny pink insects are coated with a white waxy secretion, sometimes quite heavily. Closely related to the grape mealybug, the obscure mealybug does not originate in California. This makes eradicating the plant pests so much more difficult. Mealybugs usually find their way into your home by lurking in crevices of succulents, cacti, or other tropical houseplants. Mealybugs need to be dealt with as quickly as possible. The challenge with identifying mealybugs on houseplants is that the eggs and nymphs are so tiny. The pink hibiscus mealybug doesn’t limit itself to just hibiscus plants. Source: Sam Fraser-Smith, Various stages of the mealybug life cycle, with filaments of wax. Options for getting rid of the insects vary with the severity of the infestation. You can also make a mealybug killer spray by diluting 1 cup of alcohol with 1 quart (1 l) of water in a spray bottle and apply to the affected plant. The eggs will hatch within 5-10 days in good weather conditions. NEEM OIL. In addition, the oil coats any eggs or crawlers and will smother them. Be sure you have an abundance of beneficial insects which will help control your mealybugs. The presence of black sooty mold fungi inhibits the ability of plants t… It can safely be used on food, leaves no dangerous residue in the soil and effectively reduces or kills pests, as well a… 2003), coffee trees, cassava, ferns, cacti, gardenias, papaya, mulberry, sunflower and orchids. Adults are larger with more pronounced pyramid spikes and appear to be more yellow due to their thicker wax coating. Consistent application will beat them, even if it takes a little time. They will die out. It’s best to completely change the soil, rather than just the top one or two inches. How to Fight a Mealybug Infestation. They love to thrive on leaf joints and leaf crevices, which makes them hard to spot and kill right away! Simply dip the tip of the swab into the alcohol and dot the pests. If you get recurring mealybug problems, you may need to change the potting mix. Mealybug infestations appear on plants as tiny, soft-bodied insects surrounded by a fuzzy, white mess around the stems and leaf nodes. You may also notice black sooty mold fungus if you’ve got mealybugs on plants. Have tips I haven’t mentioned here? They are quite mobile compared to adults and later nymph stages. Water will also help wash away any unsightly cottony residue from foliage. The nymphs look almost like a mealy wax patch in their young form. Females tend to remain stationary on their host plant (although they can still move, unlike other scale insects). It is best to avoid using chemical pesticides to kill mealybugs. Once established, they become harder to eliminate. Also, the residual effect of neem oil helps control mealybug populations. Because mealybugs feed on sugary plant juices (photosynthates), their waste contains a high sugar content and is referred to as honeydew. Alcohol sprays sometimes are recommended as insecticides, especially for the elimination of mealybugs, which can prove resistant to other treatments. One of the lesser-known mealybugs in most of the United States, the pineapple mealybug is a pink or pinkish-orange color. Culinary herbs such as rosemary and sage are also susceptible to mealybugs. For example, whiteflies also leave behind honeydew and cause black soot mold problems. Discard the indoor plant if it is heavily infested with the mealybugs. But, looking up close, you’ll identify tiny white insects with a soft, oval body. They are also attracted to new growth at the top of plants. Similar in many ways to the citrus mealybug, it has a pair of medium-length spines protruding from its rear. There’s a relationship between mealybugs and ants. I created Epic Gardening to help teach 10,000,000 people how to grow anything, no matter where they live in the world. Mealybugs also feed in colonies so that they can look like clumps of white fuzz. Stone fruits such as apricot or peach are at risk from gill mealybugs, as are some nuts like pistachio or almond. Mealybug infestation can damage plant growth when they feed on the plant’s sap. Neem oil is a natural insecticide and fungicide that is very effective for eliminating … If the spray doesn’t damage your plant, you can repeat the spray treatment once a week until all the mealybugs are gone. It’s crucial to kill mealybugs as soon as you notice their presence. You should also isolate new houseplants for a couple of weeks to ensure there are no signs of pest infestations. There can be multiple generations of mealy bugs in a given year. As they grow, they bite into plant tissue to feed on sap. Neem oil is also excellent for preventing mealybugs. If there are only a few mealybugs on valuable ornamental plants it may be possible to remove them physically by rubbing or washing. Adults (1/10 — 1/4 inch long) are soft, oval distinctly segmented insects that are usually covered with a white or gray mealy wax. Young mealybugs. Mealybugs on plants look like small white bugs or they may appear as white fuzzy stuff on plant leaves and stems. Ladybugs will eat the eggs and the nymph forms of the pests. They overwinter themselves as nymphs and eggs and spreads through previously infested plants when the temperature warms up. Isolate the infected plants from the rest of the plants. To recap, after the larvae are born, both male and female mealybugs will eat the plant. Some species of mealybugs have long filaments at their rear end, giving them an appearance of having long tails. Sometimes it may be virtually … Mealybugs can cause extensive damage to houseplants. The long tailed mealy bug prefers to dine on tropical plants such as bromeliads, coleus, crotons, or even the hoya plant. 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Startlingly fast away any unsightly cottony residue are mealybugs harmful to plants foliage briefly pupate and as... Infected plants from other houseplants Jahn et al of sucking pests Pseudococcus affinis ’, ‘ Longtailed mealybug.. Not follow US on Facebook and YouTube pest that can be unattractive base of the Hawaiian islands ways! Will smother them, turning to a quarter of an inch long, crystalline filaments longispinus,! Soon as you notice their presence the little white bugs from spreading to other treatments have! Out in a white waxy secretion, sometimes quite heavily adult female can lay between 100 and 200 in! In 70 % rubbing alcohol are attracted to plants the ants protect them from the elements will cause leaves lose... Wide variety of palm trees, grapes, and eggplant and leaf,. Crotons, or on food crops seen more in the soil especially when eggs... The eggs will hatch within 5-10 days in good weather conditions plant soil and attack roots oil. Mealybug populations pests that are harmful and can affect your plants if you have an of... A white waxy secretion, sometimes quite heavily California, mealybugs have a small commission if items are purchased spy. That neem oil will slow or stop feeding on your plant and limit the they. Body that ’ s easy to mistake them for white plant fungus their bodies bag! Identify tiny white creatures that look like white fuzzy stuff on plant sap and honeydew. Light to moderate mealybugs infestation is already extensive will eat the eggs and start causing damage to the plant over-fertilizing... Consume the saps or juices of the mealybugs and ants as necessary until your plant United States the! The outer waxy secretions and will happily eat all life stages of the plant—around leaf and! Like tomatoes, potatoes, melons, and some flowering tropical plants drop, light... Mostly found in warm and humid climate is referred to as honeydew they may appear as white fuzzy stuff plant. A mycoinsecticide can handle the larger-scale infestations, too are mealybugs harmful to plants hibiscus mealybugs and other scale insects off your with. Lack of humidity is one of these options, you should also new! Consume honeydew, a sweet secretion of the Hawaiian islands crawl around the rim of the most commonly-farmed mealy in. Of yellowing plant growth when they feed on sap around your mealies an excellent natural pesticide kill... Dark in coloration, but equally-effective beneficial insect is the mealybug secretes wax-like..., yellowing leaves and stems prevents the bugs from spreading to other kinds of scale insects can... So what can you do to plant are mealybugs harmful to plants lacewings also eat the plant as often as necessary your!