I think my euonymus tree is dead and cannot be saved. We planted 4 Euonymus green spire a few months ago in full sun and next to the fence. dead-looking euonymus Manhattan. Summer Leaf Scorch (Euonymus) Problem Info . My tree is clearly dying. If left alone, the spots grow larger, sometimes merging together. This problem is most severe on the youngest branches. You may also notice larger, brownish oyster-shell coloured scales on the stems. Leaf scorch is caused by excessive evaporation of moisture from the leaves. In April we were told to wait-and-see. It appears something is stripping the leaves off of the plants, or they are just falling off. Plants do not usually die. Some euonymus species are afflicted by scab, from the fungus Sphaceloma or Elsinoe euonymi-japonici. Watering is set at once per day for 2 minutes on a drip system. Scab can disfigure the euonymus by causing small gray spots encircled by orange margins to grow on leaves and stems. Why has my Euonymus hedge suddenly died? It is the end of May and a few of the shrubs have a very few green leaves coming out … We are in Zone 9, and the weather has been in the high 90's / 100's. The leaves have turned yellow and are falling. There are also some brown, sesame seed sized critters on some of the leaves. The male scales generally appear on the undersides of the leaves, but it is not unusual to see them on the top of the foliage. Euonymus winter damage can be caused by too much heavy snow and ice, which snap branches or bend them out of shape. But there are white "rod" shaped things on the underside of the leaves and the tree is covered in white stuff. These shrubs are 4 to 6 feet tall. Winter Desiccation of Euonymus. Sometimes the whole leaf dies. Now I am wondering if the white things are actually eggs from another insect. Our condo community has 15 or 20 "dead-looking" euonymus Manhattan shrubs. There are no black spots on the leaves. Analysis . Asked May 26, 2015, 3:20 PM EDT. It can also be caused by temperatures that yo-yo around the freezing point. I have posted a picture of what one of the plants looks like. Many leaves may drop during late summer. 1/8 inches white straight 'dashes' on my euonymus leaves (top and underside) as well at the woody branches. It then disappeared and made a re-appearance in 1952. During hot weather, usually in July or August, leaves turn brown on the edges and between the veins. Immediately ripped these 7-8 year old evergreens from the ground, thinking it was a scale infestation. The cause is not Crown Gall, Powdery Mildew, Anthracnose, or Scab. Over the last decade it has spread throughout England and Wales and is becoming far more common. In parts of the USA where this pest is better established the most commonly given advice is to dig up affected plants, burn them and replant resistant plants. Just noticed approx. They are all 15 years old. 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