A byproduct of mealybug feeding is sticky honeydew which coats infested foliage, as illustrated by the Hoya pictured in this slide and provides an excellent medium for growth of the black sooty mold fungi. Mealybugs are soft-bodied insects also having piercing-sucking mouthparts and they possess a covering of flocculent, white, waxy threads. Okay, I need help. In low numbers, none of them poses a threat. Yews don't like "wet feet" and can develop root problems if their roots are kept too wet. Only female plants produce berries, mostly red. Wash them away: Mealybugs can be dislodged with a steady stream of water. Choosing an appropriate, well-drained site for the yew and watering during very dry periods is the best defense against these problems. Spotting a Mealy Bug Infestation. Fruit and leaves are poisonous if ingested. One application of neem oil probably won’t kill all the mealybugs on the plant. Insects. Once pests infest yews, they are difficult to control. Although considered relatively drought-tolerant, too little water can also cause problems. Mealybugs, sometimes called woolly aphids, leave behind a telltale white cottony coating on the plants. ianna. This is best for light infestations. Mealybugs are a common greenhouse pest that affect ornamentals, houseplants, avocados and fruits. Repeat the treatment as necessary. Look for clusters of tiny white, cottony ovals at the base of the needles. Because mealybugs have a rapid lifecycle, you’ll need to routinely kill the newly-hatched bugs every week until all of the mealybugs have been killed off. Scale appear as bumps on the lower sides of yew leaves. To spot a mealy bug infestation check stem joints, under leaves and other protected areas of the plant for what look like small balls of cotton wool. Mealybugs, which look like white cottony masses on your houseplants, can leave lasting damage if unattended. Small nymphs, called crawlers, are light yellow and free of wax. Identification. Leaves are dark green needles. Yew with severe mealy bug infestation. Yews are often grown as hedges or screens. Yews are coniferous evergreen shrubs or trees. Adults (1/10 — 1/4 inch long) are soft, oval distinctly segmented insects that are usually covered with a white or gray mealy wax. Family Taxaceae (Yew family) Plant Identification. The white mealybugs look like small bits of cotton and leave a waxy powder on the plant. Regain control of your garden with various methods to kill and remove the pesky bugs. Objects below where mealybugs are feeding may be shiny and sticky or blackened and sticky: E.R. Yews produce cup-like, single-seeded berrylike fruit. I've tried cold spraying them with the hose. Spray the plant weekly until the mealybugs are gone. What techniques will work. The process should be repeated every three to four days for a couple of weeks to take care of any that may hatch out. Question From: Markham, Ontario, Canada . 15 years ago. Nancy, A strong stream of water will blast the little critters from the shrubs. Q: Get rid of mealy bugs on hicksyew. I normally know what to do but when faced with an infestation of this severity, I need to know which insecticides will work. A plant suffering a significant mealy bug infestation will look wilted and may exhibit yellowing or deformed leaves. How To Get Rid Of Mealy Bugs On Yew Tree. They also suck sap from your plants, which can weaken and damage your garden, especially if you have a major infestation. Optimum conditions for growth. Black vine weevils, scales and mealybugs are the primary pests that affect yew plants. Mealybugs and scale emit a sweet substance called honeydew -- which ants love -- that can produce a black surface fungal growth called sooty mould. In some areas of the country mealybugs may be found infesting yews. I prefer using insecticidal soaps because the other kinds freak me out. Mealybugs . 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