Coral spot, so-called because after affected branches die they develop pinhead-sized coral-pink fungal pustules, is a disease caused by the fungus Nectria cinnabarina. The fall brings a myriad of color showing red, orange and purple, an outstanding display. Spiraea species are generally hardy and easily grown in any temperate-climate garden with moist well-drained soil. Leaf spot diseases are usually a cosmetic problem in spirea â¦ This includes leaf spot, fire blight, powdery mildew, root rot, aphids, leaf roller, and scale. The first, we already talked about. I just bought some false spirea (astible falso) as I am looking for low care perennials and am starting with three plants. Some Facts of Bridal Wreath Spirea. Season â spring until fall Target plants â Solanaceae (nightshade family, like â¦ They are recognized by their abundant flowering in whites, pinks, or reds. Fritsch spirea jumps out with a striking red, orange, and yellow glow even brighter than the fall color of oaks and maples. Although commonly found on magnolias and camellias, algal leaf spot â¦ Sem Ash Leaf Spirea . Name â Septoria species Common names â leaf spot Type â leaf spot fungus. Two common diseases can cause the plant to die off. Septoria is a species of fungus that infects vegetables, trees and ornamental plants. VIDEO Created by Elizabeth Meyer for "Trees, Shrubs and Conifers" a plant identification course offered in partnership with Longwood â¦ Leaves (to 3â long) are oval and sharply-toothed. Ogon spirea is an easy-care woody shrub that has white blossoms in early spring and colorful foliage in fall. Many types tolerate â¦ Extensive summer leaf â¦ ... fire blight, leaf spot, powdery mildew, and root rot. are deciduous shrubs that grow 2 to 6 feet tall depending upon species and variety. Leaf spot diseases are caused by various fungi and produce black spots on the foliage of the Dart's Red spirea. Cylindrosporium Leaf Spot Spirea leaves with both surfaces exhibiting light-yellow lesions that darken over time suffer from Cylindrosporium filipendula leaf spot. Garden Uses. Some fungal infections act much like rust; others are caused by bacteria or even a virus. Spiraea spp. The flowers may have just been too wet for too long and they eventually do dry up. It is a dwarf shrub that typically matures as a dense rounded mound of foliage to 3' tall and as wide. If you have a spirea bush that is dying, it could be a disease â¦ Family Rosaceae (Rose family) Plant identification. This shrub rarely gets serious problems from pests or diseases. Spiraeas are susceptible to many of the diseases and insects that attack other rose family members, including leaf spot, fire blight, powdery mildew, root rot, aphids, leaf roller and scale. 5 Spirea. the leaf blade is coriaceous (has a firm, leathery texture) the leaf blade is herbaceous (has a leafy texture) Leaf blade translucent dots These Spirea Magic Carpet were planted on Memorial Day. Entomosporium is one of the fungal diseases that infects many plants in the rose family (Rosaceae). Powdery Mildew. When leaves are uniformly green, open, upright and growing vigorously, your plants are well-cared for and healthy. The foliage of â¦ The removal of affected leaves and stems, and the application of a chemical fungicide or a biofungicide may halt â¦ a deciduous shrub; 4' to 5' tall I can't even sign into the diseases forum, so I thought I'd try here. Overall they look good, but now have developed small brown spots that are spreading fast. Proven Winners. Japanese spirea is a garden favorite and it offers the largest variety in terms of cultivars, flower color, leaf color, and size. When leaf spot does occur, it is most often caused by Entomosporium maculatum, which is common in members of the rose family. Water the â¦ Most leaf spot diseases affect only a small percentage of the tree's overall leaf area, and are a minor stress on the health of the tree. Fungal leaf spot can be found in your outdoor garden as well as on your houseplant. Leaf spot diseases may affect spirea but are also not especially damaging to the health and appearance of the tree. Applying copper fungicide to newly-bloomed flowers helps reduce the disease, but wonât do anything for already infected blooms. Powdery mildew is a fungus that attacks many garden plants, including spirea. The large compound leaves open on arching stems, unfolding with a reddish tinge gradually changing to a deep green. Leaf spot diseases should be taken seriously if they result in moderate to complete leaf loss two to four years in a row. On trees with a heavy infection, these splotches may enlarge until they run together and cover a large portion of the leaf surface. This attractive shrub has a late winter and spring interest. Susceptible to many of the diseases and insects that attract other rose family members, including leaf spot, fire blight, powdery mildew, root â¦ The next step in getting rid of black leaf spot is prevention and maintenance. In mid to late spring, abundant clusters of tiny white flowers line the arching leafy stems producing a dependable display every spring.