Euonymus scale, Unaspis euonymi, is an armored scale that is a very common pest of euonymus and pachysandra. Euonymus scales (Unaspis euonymi) are a common problem on pachysandra. The female insects lay eggs in May. They are often found on trunks, twigs and branches. but also pachysandra, hollies, and camellias. Controlling Euonymus Scale Bugs. They produce a scale over their tiny bodies that appears as white or brown flecks on the stem and leaves of the plant. Moderately to heavily infested plants grow very … Individual scales are small and are often overlooked until serious damage has occurred. Euonymus scale is now established in the United States and Canada and has become a major concern in many landscapes. This scale also attacks a number of other plants such as English ivy, hibiscus, holly, honeysuckle, lilac, and pachysandra. Badly infested plantings may be renovated by mowing and … Female Euonymus scale females (about 1/16 inch long) have dark brown to gray, somewhat pear-shaped bodies. There are probably two generations each season, and the winter is passed in a nearly mature condition; eggs are formed during May and hatch later in the month. When mature, it produces … ECN UME Home and Garden Info Center The white coverings of males are distinctly smaller and narrower. Pachysandra – Euonymus scale. Q: Our prized hundred-year-old oak may be in trouble. When abundant, these armored scales can completely encrust twigs and leaves of Euonymus, pachysandra and bittersweet. Euonymus scale treatment is a game of timing. They use their piercing- sucking mouthparts to feed on sap. As a nymph, the scale is mobile, crawling around looking for new places to feed. If the scales simply crumble away dryly, all you have is the leftover shells of dead bugs and you don’t need to treat. A: I don’t know why the dead plants occurred in a path to the tree but euonymus scale is the cause of the pachysandra problem. In general, plants growing close to buildings are more susceptible … The euonymus scale, Unaspis euonymi, is an armored scale that can cause complete defoliation or even death of the evergreen Euonymus. Euonymus scale, Unaspis euonymi. Euonymus scale has become a concern in many landscapes. Pachysandra is often severely infested by this scale. The female scale cover is oyster-shaped, gray, and 1-1.5 mm long.Males are white (0.75 mm) with no cover and 2 visible wings ().In North Carolina there are three generations per year with first crawlers emerging in early May then in 6-8 week intervals. The larvae emerge and begin feeding on the sap of the plant. Pachysandra – Euonymus scale. The females tend to enjoy feeding on the sap from the stem of the plant, but the males will form scales on … Some euonymus scale can exist on pachysandra with minimal harm, provided the pachysandra is healthy and natural predators can keep down the scale population. Generally, they can be described as small bumps which can be easily scraped away. Scales have three stages of development: egg, nymph or crawler stage, and adult stage. Euonymus scale – Look for euonymus scale on leaves and stems of Euonymus spp. Read more here to learn … Scales are insects. Almost overnight we noticed that the pachysandra circling our tree has died in a path leading to the trunk of the tree. The female scales are gray and pear-shaped, while the males are smaller, narrower, and whiter. Without treatment, heavy scale infestations will reduce … If you see an orange smear, the scales are still alive and need to be dealt with. Is the tree in jeopardy? Although the individual insects are small, infestations are often dense and plainly visible.