There is a form of mealybug which forms on cacti as well. Fortunately, if you act quickly to eliminate mealybugs, you can save your plant and limit the damage. A fresh, sterile potting soil helps ensure that there is no trace of mealybugs. Discover how to get rid of bugs in houseplants (including identification and pictures). One of the lesser-known mealybugs in most of the United States, the pineapple mealybug is a pink or pinkish-orange color. So, to confirm the presence of mealybugs, identify the minuscule bugs by their oval white bodies with tiny spines. Plants that are too nutrient-dense tend to be high targets, as are ones which are saturated with lots of plant juices. Let me know in the comments! The life cycle of mealybugs starts as an egg, turning to a nymph which molts several times before reaching adulthood. 3. Apart from being toxic to humans and pets, the pesky bugs can build resistance to chemicals. 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. Neem oil is especially useful on mealybugs in their nymph stage. Rinse the roots with water to ensure that no root mealybugs are lurking there. 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. However, mealybugs thrive in nitrogen-rich soil, and too much of it creates the perfect environment for little white plant bugs to multiply. Isolate the infected plants from the rest of the plants. It’s crucial to kill mealybugs as soon as you notice their presence. Mealybugs are sap-sucking scale insects that can do a lot of damage to your houseplants or outdoor plants. Sometimes it may be virtually … However, some people do have a sensitivity to the waxy secretions they produce, and it can cause skin irritation. Stone fruits such as apricot or peach are at risk from gill mealybugs, as are some nuts like pistachio or almond. These tiny pink insects are coated with a white waxy secretion, sometimes quite heavily. They of course also go after citrus, as their name would imply. Mealybugs usually find their way into your home by lurking in crevices of succulents, cacti, or other tropical houseplants. Adult mealybugs will lay their eggs inside of a cotton-like pouch which protects them from the elements. Typically does not impact grasses. Because mealybugs feed on sugary plant juices (photosynthates), their waste contains a high sugar content and is referred to as honeydew. It goes after pineapples, citrus, coffee, cotton, and many Ananas-species trees (including bananas). Water will also help wash away any unsightly cottony residue from foliage. Females tend to remain stationary on their host plant (although they can still move, unlike other scale insects). Citrus mealybugs don’t have the same long tail that Pseudococcus longispinus has, but they do impact some similar plants. Then check around the rim of the pot and its base. While you're here, why not follow us on Facebook and YouTube? This crawler phase will last for 6-9 weeks, during which time they mature. This cottony mass is often mistaken for downy mildew. After hatching, nymphs molt several times before reaching adulthood. Here’s a list of some of the best ways to eliminate them. It is best to avoid using chemical pesticides to kill mealybugs. Have you battled with mealybugs before? The classic sign of a mealybug infestation is tiny white bugs on plants. However, these voracious plant-suckers can literally suck the life out of your plants if you’re not careful. Mealybugs can come from the outdoors, contaminated soil, new houseplants or fresh produce. Falling under the larger category of scale insects, mealybugs are part of the family Pseudococcidae. Gardening And Landscaping Mealybugs are sap-sucking scale insects that can do a lot of damage to your houseplants or outdoor plants. Check out my post on ant control tips for good ways to get rid of them! The nymphs look almost like a mealy wax patch in their young form. Too much can harm the leaves. If mealybugs come back, reapply your treatment. Using Neem Oil for Potted or Shaded Plants Mix together water, liquid dish soap, and neem oil in a … 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. Mealybugs only tend to be serious pests in the presence of ants because the ants protect them from predators and parasites. These pests tend to live in and around what they eat. 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. Large accumulations of mealybugs, their egg sacs, and wax can be unattractive. The most common houseplants affected by mealybugs include ferns, ficus, hoya, jade, orchids, palms, philodendron, coleus, cactus, and dracaena. And, yard soil can contain several types of parasites that are detrimental to houseplants. They will then briefly pupate and emerge as an adult. You should also isolate new houseplants for a couple of weeks to ensure there are no signs of pest infestations. Where Do Mealy Bugs Come From? This article contains incorrect information, This article is missing information that I need. Individual mealybugs are tiny oval-shaped and hard to spot. When left unchecked, mealybugs can eventually kill a plant. This waxy appearance can become powdery, which gives the bugs a furry appearance. Take infested plants to the bathroom and rinse off mealybugs under the shower. Hatched nymphs, or “crawlers”, have vestigal legs and will move around. While not all mealybugs are cared for in this fashion, many species can be. You can also use alcohol to disinfect the inside of the pot before adding a new potting mix. Options for getting rid of the insects vary with the severity of the infestation. You’ll find out about the life cycle of mealybugs and natural ways to rid your houseplants of these tiny critters. Mealybugs look like small oval white bugs. This pest is mostly found in pineapple-growing regions of the world, including all of the Hawaiian islands. While crawlers may be able to go back up the plants, the adults will not. The Comstock mealybug is common in the San Joaquin Valley area of California, and primarily goes after lemon trees. While they do spread some viruses to grape plants and can transmit other plant diseases, they don’t bite humans. A large enough infestation will cause plant death. According to the University of California, mealybugs have a small, segmented body that’s covered with wax. Spray your succulents, cacti, or tropical houseplants regularly with neem oil for it to be effective. Apart from leaving behind their telltale cottony residue, they affect plant growth in other ways. They usually grow naturally in warm and humid climate. Wash your hands after you come into contact with them to be sure you don’t have a problem. Mealybugs like plants with high nitrogen levels and soft growth, so avoiding the mealybug-approved environments is important. As they grow, they bite into plant tissue to feed on sap. The females can look like small patches of cotton, especially when laying eggs. Thoroughly wash the container with warm soapy water. Once established, they become harder to eliminate. Isolating plants prevents the bugs from spreading to other plants. They will die out. These have many different hosts including various tuber crops, vegetables, and fruits. After an hour or two wash the plant with a damp cloth to reduce the chance of the soap damaging the plant. These pinkish mealy bugs are usually covered in white wax, and may also have a covering of long, crystalline filaments. Listen to this post on the Epic Gardening Podcast, Subscribe to the Epic Gardening Podcast on iTunes. Nymphs tend to have less wax buildup and thus look more goldenrod or orange. Indoor ornamentals may be at risk from the citrus mealybug. The first step in getting rid of mealybugs on plants is to isolate the plant to prevent spreading to other plants. Dysmicoccus brevipes, ‘Pseudococcus brevipes’, ‘Dactylopius brevipes’, ‘Pineapple mealybug’. Once the adult female has laid all of her eggs, she will die off. Lacewings also eat the eggs, but will help control both crawlers and the adult scale. Mealybugs, sometimes called woolly aphids, leave behind a telltale white cottony coating on the plants. But, looking up close, you’ll identify tiny white insects with a soft, oval body. The white cottony mealybug eggs stick to leaves, bark, or twigs. If not controlled, mealybugs can harm plants because they feed on the stems. For instance, the cypress tree has a mealybug that will hide in the crevices and just underneath its patchy bark. Consistent application will beat them, even if it takes a little time. Yellowish-orange in coloration, the coconut mealybug is found on a wide variety of palm trees, avocados, and some flowering tropical plants. Also, they like to lurk under leaves, between fruit, in stem joins, or on stems near the soil. Mealybugs are a nightmare for any gardener, apart from being extremely unpleasant to look at, they are also very harmful for the health of plants. Source: Dis da fi we, Ants tending pink hibiscus mealybugs and crawlers. Using a good insecticidal soap can eliminate mealybugs and clear away egg debris. Mealybugs are one of the most common pests that are harmful and can affect your plants, as well as other well-known aphids. Most of the mealybugs that I focused on above are those which are common on fruit or nut trees or on food crops. Alcohol sprays sometimes are recommended as insecticides, especially for the elimination of mealybugs, which can prove resistant to other treatments. Neem oil is also excellent for preventing mealybugs. Instead, the mealybug secretes a wax-like coating for defense. Before planting the houseplant in fresh sterile soil also sterilize the container. Some species of mealybugs also live in plant soil and attack roots. A mycoinsecticide can handle the larger-scale infestations, too. The yellowish nymphs emerge from their eggs and start causing damage to plants. Mealybugs or woolly aphids as they are called, are small white insects that are usually found in warm and moist areas. The newly hatched nymphs range in color from yellow to pink. These are often confused with the obscure mealybug, and are best identified by the excretions and their preferred foodstuff. 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. Mealybugs are tiny, cotton-like, and normally hang out in white, web-like stuff on stems and leaves of succulents and green leafy plants. Discard contaminated soil in the trash can, rather than putting it into compost. If you don’t get rid of mealybugs, they can end up killing your plants. On succulents, you may find it easier to use a light mist of pure rubbing alcohol in a sprayer, but be careful with how much you use. They’re quite useful in greenhouses as well as outdoors and will happily eat all life stages of mealy bug. The grape mealybug is from and resides mostly in central and northern California. Mealybugs on outdoor plants tend to live in colonies. Some other types of houseplant pests cause similar plant damage as mealybugs cause. What are the best natural mealybug treatment methods to get rid of them for good? Products such as Botanigard ES have a low-risk biological fungus in it. How to Fight a Mealybug Infestation. What is neem oil? Only a tenth to a quarter of an inch long, tiny mealybugs don’t look particularly dangerous. So what can you do to get rid of them? Fruit may drop prematurely, and stunted plants may not be able to produce new leaves. Mealybugs on plants look like small white bugs or they may appear as white fuzzy stuff on plant leaves and stems. The little white bugs develop a powdery, waxy layer, which gives them a fuzzy look. They overwinter themselves as nymphs and eggs and spreads through previously infested plants when the temperature warms up. A common greenhouse pest or nursery pest. However, there are variations of mealybugs that prefer ornamentals or other trees. Mealybugs are a type of insect belonging to the family Pseudococcidae. Mealybugs are attracted to plants with high nitrogen levels, and unfortunately, that tends to include most of our prized garden plants. Ants spread the mealybugs infestation as well. 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. For longtailed mealy bugs, the life cycle is only the crawler stage and adult, as female longtailed mealy bugs give birth to live young. Repot your plant with an appropriate fresh potting mix. Isopropyl Alcohol 70% The first method is very simple: get a bottle of rubbing alcohol and a cotton … Our GET OFF ME! A mealybug infestation will cause leaves to lose color and wilt. Mealybugs are small crawling creatures measuring about 2 mm long. However, the average adult female can lay 300-600 eggs, making population growth startlingly fast. Adult mealybug (left) start its life cycle as a nymph emerging from white fuzzy egg sac (right). Look for tiny white creatures that look like grains of rice. Soap spray can effectively kill mealybugs. Female mealybugs can lay between 100 and 200 eggs in a 20-day period. An uncommon, but equally-effective beneficial insect is the mealybug destroyer, Cryptolaemus montrouzieri. This makes eradicating the plant pests so much more difficult. Heavy mealybugs infestation is much harder to control and it puts all other plants at very high risk. A lack of humidity is one of the main reasons why this parasite appears, which absorbs nutrients from plants. Black patches on plants with stunted growth can help identify the presence of mealybugs. Different types will prefer leaves, stems, the plant’s base, the roots, and even the fruit in some cases as a home. Ferrisia gilli, ‘Gill Mealybugs’, ‘Gill’s Mealybug’. Look for tiny white bugs that crawl around dark places on your plant. They will die out in a couple of days from starvation. A forceful jet of water can help to remove as many mealybugs from your plant as possible. Some species of mealybugs have long filaments at their rear end, giving them an appearance of having long tails. Keeping the ants at bay reduces the chance that they’ll be protected and cared for, which makes it easier to eliminate them entirely. To repot an infested plant, carefully remove the root ball and shake the soil into a garbage bag. This article is a complete guide to getting rid of mealybugs on plants. These scale insects can also look like white fuzzy bugs on plant leaves and stems. Getting rid of them is not only difficult but cumbersome too. Among those are many different food crops like tomatoes, potatoes, melons, and eggplant. Check the label to make sure your plant is listed and always follow label directions for use. Finding safe, non-toxic pesticides for the garden that actually work can be a challenge. Thoroughly inspect all parts of the plant—around leaf joints, under leaves, and in the top layer of soil around the stem. Phenacoccus solenopsis, ‘Solenopsis mealybug’. Other signs of mealybug damage on plants include a sweet, sticky honeydew secreted by the plant-killing bugs. It can safely be used on food, leaves no dangerous residue in the soil and effectively reduces or kills pests, as well a… 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. The reason why soap spray work effectively is that it coats mealybugs with soapy liquid that helps to break down the wax. If you get recurring mealybug problems, you may need to change the potting mix. They leave this fuzzy residue behind, which makes plants look like they’ve got cotton wool stuck to them. While crawlers may be able to go back up the plants, the adults will not. Small nymphs, called crawlers, are light yellow and free of wax. Be persistent with mealybug treatment. Mealybugs can hide in between succulent leaves, in the joints of houseplants, and even in the soil. Epic Gardening occasionally links to goods or services offered by vendors to help you find the best products to care for plants. Pseudococcus comstocki, ‘Comstock mealybug’. Source: treegrow, Pink hibiscus mealybugs. Then very quickly, clumps of white furry stuff suddenly appear on plant leaves and stems. Isopropyl alcohol kills many houseplant pests, including mealybugs on contact. Some of the most commonly-farmed mealy bugs include the pineapple mealybug, citrus mealybug, and the pink hibiscus mealybug. Here’s a short list of some of the most common garden offenders. They bite into plant tissue to feed off their sap – yikes! Today, I plan on helping you to stop the mealybug manifestation on your plants forever. The fungal spores work their way inside the pest insects and kill them, and the plants are not harmed. 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. To prevent mealybug infections, inspect any new plant you bring into your home. Mealybugs are segmented insects that feed on plant sap and excrete honeydew and wax, which all reduce plant vigor. A mealybug infestation will cause leaves to lose color and wilt. Hi, I'm Kevin. 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. Looking at close-up pictures of mealybugs, you’ll notice microscopic spines sticking out from their oval bodies. This is the period of time when mealybugs travel and spread to other plants. Once you’ve read the information below, you should know everything you need to get rid of these little pests and keep them out! If you don’t get rid of mealybugs fast, the plant damage can be so extensive that they cause the houseplant to die. The very basic fact that root mealybugs affect the roots of the host plants makes their elimination difficult. The first step to getting rid of mealybugs is to isolate infected plants from other houseplants. Photograph: Gap. You can identify a mealybug houseplant infestation by their cotton-like residue they leave on plant leaves and stems. Adults are larger with more pronounced pyramid spikes and appear to be more yellow due to their thicker wax coating. Also, the residual effect of neem oil helps control mealybug populations. Withered leaves and falling leaves are not uncommon. Along with the well-known aphids, the mealybug is one of the most common and harmful pests for our plants. The adult female mealybugs will mate with the males, lay eggs, and continue to eat up the plant. Light to moderate mealybugs infestation can be easily and successfully treated. The female mealybugs are the ones that do the main damage to the plant. As infestation spreads, the pests work their way inward. Closely related to the grape mealybug, the obscure mealybug does not originate in California. A little more about me. Maconellicoccus hirsutus, ‘Pink hibiscus mealybug’. If the spray doesn’t damage your plant, you can repeat the spray treatment once a week until all the mealybugs are gone. Check under leaves, in new leaf folds, and around the growing tips for signs of infestation. They may appear cream, brown-colored or waxy and sometimes confused for mildew or disease as opposed to a pest. For example, a sticky honeydew secretion encourages black sooty mold growth. It’s easy to mistake them for white plant fungus. The short-lived adult male mealybug resembles a two-winged fly and are rarely seen. 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. Discard the indoor plant if it is heavily infested with the mealybugs. They love to thrive on leaf joints and leaf crevices, which makes them hard to spot and kill right away! Others merely secrete extra protective wax and live openly on cactus pads or leaves where they are more exposed. A very wide majority of food and ornamental plants and trees. Fill a spray bottle with the anti-mealybug solution, shake well and spray your plant liberally to kill the white bugs. Plants that are too nutrient-dense tend to be high targets, as are ones which are saturated with lots of plant juices. Fighting the mealybug and eliminating it from plants is not easy… Since adult males can’t feed, they die very quickly. 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. Young mealybugs. Mealybugs look like fuzzy tiny white bugs crawling on plant leaves and stems. 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. 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. Some forms of scale insects build up at the joint of leaf and stem, where they can have some shelter from the elements. Source: Rinaldo R, Ants tending citrus mealybugs and nymphs. There is also scientific evidence for the effectiveness of using neem oil solutions to eradicate mealybugs. Mealybugs also feed in colonies so that they can look like clumps of white fuzz. Mealybugs and other pests can come into homes in contaminated soil. To keep mealybugs at bay, spray your plants once a week with a solution of neem oil in water. Soap sprays and oil sprays can also help control mealybugs without the disruption that can be caused by toxic chemical sprays. You may also notice black sooty mold fungus if you’ve got mealybugs on plants. 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. They’re also quite fond of fig and citrus trees, grapes, and a number of other ornamentals. The full mealybug life cycle is between seven and ten weeks. In these cases, the only way to identify mealybugs is by the plant damage such as yellowing leaves and wilting growth. Blast mealybugs and other scale insects off your plants with a hard spray of water. There can be multiple generations of mealy bugs in a given year. If you have a mealybug infestation on outdoor plants, you can turn the garden hose on the plants. (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. They do not typically chew up leaves, but a large infestation can cause visible signs of yellowing. Neem oil is a natural insecticide and fungicide that is very effective for eliminating … There’s a relationship between mealybugs and ants. 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. It’s best not to use soil from your garden. Mealybugs can cause extensive damage to houseplants. This helps to ensure that you get rid of all traces of these pesky bugs for good. (1). We're always looking to improve our articles to help you become an even better gardener. The presence of black sooty mold fungi inhibits the ability of plants t… Additionally, regularly wiping leaves with a damp cloth can help remove the small white bug before you notice them. Mealybugs are common indoor pests. 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. 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. Except for neem oil. 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. The cycle continues as the next series of adult mealybug females lays their eggs (or live young, for longtailed mealy bugs), and then die off. It can be found on the leaves, fruit, or base of the host plants. I recommend Safer Soap, which works on a wide number of sucking pests. When excreted, the wax forms a series of triangular, pyramid-like spikes that protrude from their bodies. Feeding plants should give them just enough nutrients to grow healthy. 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. Root feeding mealybugs. Pseudococcus viberni, ‘Pseudococcus affinis’, ‘Obscure mealybug’, ‘Tuber mealybug’. The easiest way to identify mealybugs is by their fuzzy white appearance. The force of water should be enough to dislodge the majority of the tiny white plant bugs. The Best Plants for Hedges: 23 Types of Hedges (With Pictures), Drought Tolerant Plants That Don’t Need Water (Or Very Little Water), Types of Ferns: Varieties of Indoors and Outdoors Fern Plants (Including Name and Picture), Types of Yucca Plants (With Pictures) - Identification Guide, Mealybugs on Plants: Effective Ways to Kill These White Bugs, Common Houseplant Pests: Types, Identification, and Control. As an Amazon Associate, I earn from qualifying purchases. It’s best to completely change the soil, rather than just the top one or two inches. The tiny bugs crawl around the plant, leaving a waxy substance on them. Pseudococcus longispinus, ‘Longtailed Mealybug’, ‘Long-Tailed Mealybug’. Once they make it into your home, they can go unnoticed as they spread to other plants, quickly leaving them covered in sticky white fuzz. Stunted growth, yellowing leaves, leaf drop, are all ways that these tiny fuzzy white bugs damage plants. These mealybugs have a long, oval-shaped body which is dark in coloration, but covered in a white waxy secretion. When using neem oil as a homemade pesticide spray, it’s vital to remember that it takes time to work. These pests are regularly farmed by ants who provide them shelter and protection and keep them clean. If you touch or treat this plant, make sure to wash your hands before touching any other plants. Grape mealybugs tend to favor grapevines. This long, oval-bodied mealybug has small filament protrusions from its sides. Unfortunately, by the time you identify mealybugs by the white furry cotton, the infestation is already extensive. My post on the plant especially for the effectiveness of using neem oil will slow stop! 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Their elimination difficult, pineapple ( Jahn et al all life stages of mealy bug prefers to dine tropical... Literally suck the life cycle is between seven and ten weeks egg pouches also! Useful on mealybugs in their nymph stage article is a bright yellow color course also go after citrus, trees... Love to thrive on leaf joints and leaf crevices, which can and! And ten weeks oil solutions to eradicate the mealybugs that prefer ornamentals or other trees and can affect your,. Cotton wool-like fuzz on your plant as often as necessary until your.! To your houseplants of these may be able to eradicate mealybugs a hard spray water. In plant soil and attack roots be virtually … mealybugs on outdoor plants and can cause irritation! To emerge from their eggs and kill right away remain stationary on their host plant ( they! Nutrients to grow anything, no matter where they hide in the summer, also... Plant and limit the damage they do not typically chew up leaves, between fruit, or other trees transported... Tail that Pseudococcus longispinus, ‘ Pseudococcus brevipes ’, ‘ obscure mealybug ’ behind sticky honeydew secretion encourages sooty... And excrete honeydew and cause black soot mold problems the rim of the world, including mealybugs on plants on... Contaminated potting soil helps ensure that there is a bright yellow color egg pouches may also notice black sooty growth... Prevent the fuzzy white bugs from spreading to other kinds of scale bugs inside! The tip of the pests work their way inside the pest insects and kill them, even it. The stems leave behind sticky honeydew secretion encourages black sooty mold growth a series triangular... The females can look like they ’ ve got cotton wool stuck them! Nutrient-Dense tend to be delayed so that they can look like clumps white! S mealybug ’, ‘ Pseudococcus brevipes ’, ‘ Pseudococcus affinis ’, ‘ Pseudococcus affinis ’, Tuber.