Generally, they can be described as small bumps which can be easily scraped away. The female insects lay eggs in May. Without treatment, heavy scale infestations will reduce … They use their piercing- sucking mouthparts to feed on sap. This scale also attacks a number of other plants such as English ivy, hibiscus, holly, honeysuckle, lilac, and pachysandra. Euonymus scale treatment is a game of timing. As a nymph, the scale is mobile, crawling around looking for new places to feed. They produce a scale over their tiny bodies that appears as white or brown flecks on the stem and leaves of the plant. Euonymus scale – Look for euonymus scale on leaves and stems of Euonymus spp. The females tend to enjoy feeding on the sap from the stem of the plant, but the males will form scales on … 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. Some euonymus scale can exist on pachysandra with minimal harm, provided the pachysandra is healthy and natural predators can keep down the scale population. Q: Our prized hundred-year-old oak may be in trouble. If the scales simply crumble away dryly, all you have is the leftover shells of dead bugs and you don’t need to treat. Euonymus scale, Unaspis euonymi, is an armored scale that is a very common pest of euonymus and pachysandra. Individual scales are small and are often overlooked until serious damage has occurred. Pachysandra is often severely infested by this scale. Scales are insects. 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. Badly infested plantings may be renovated by mowing and … 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. When mature, it produces … In general, plants growing close to buildings are more susceptible … They are often found on trunks, twigs and branches. Scales have three stages of development: egg, nymph or crawler stage, and adult stage. Euonymus scale has become a concern in many landscapes. The white coverings of males are distinctly smaller and narrower. The female scales are gray and pear-shaped, while the males are smaller, narrower, and whiter. Moderately to heavily infested plants grow very … Although the individual insects are small, infestations are often dense and plainly visible. Female Euonymus scale females (about 1/16 inch long) have dark brown to gray, somewhat pear-shaped bodies. The larvae emerge and begin feeding on the sap of the plant. Euonymus scales (Unaspis euonymi) are a common problem on pachysandra. The euonymus scale, Unaspis euonymi, is an armored scale that can cause complete defoliation or even death of the evergreen Euonymus. If you see an orange smear, the scales are still alive and need to be dealt with. Almost overnight we noticed that the pachysandra circling our tree has died in a path leading to the trunk of the tree. Controlling Euonymus Scale Bugs. Read more here to learn … Is the tree in jeopardy? Pachysandra – Euonymus scale. Euonymus scale is now established in the United States and Canada and has become a major concern in many landscapes. but also pachysandra, hollies, and camellias. ECN UME Home and Garden Info Center When abundant, these armored scales can completely encrust twigs and leaves of Euonymus, pachysandra and bittersweet. Euonymus scale, Unaspis euonymi. Pachysandra – Euonymus scale.