chinensis, which is the Chinese form of a tree that was first described from Japan and Korea. Standort. Which affects mainly the C. nuttallii and the C. florida species. Flaking can sometimes be accelerated on the south sides of a tree as this side freezes and thaws during the winter. Chinese Dogwood, Cornus kousa, are fairly easy to grow from seed and hundreds of thousands of them are grown from seed annually. Control includes maintaining healthy, uninjured trees and the application of pesticides, such as pyrethroids, every two weeks during the summer. Flowering dogwood (Cornus florida)is a small Maryland native tree with white or pink flower bracts in the spring, colorful foliage in the fall, and berries that support wildlife. A Word to the Wise: Cornus kousa likes a consistently moist soil…not soggy wet, but this isn’t the tree to plant in a landscape that never gets watered either. Est.10yr.growth. Kousa dogwoods are also susceptible to crown canker disease, caused by the fungal pathogen Phytophthora cactorum. The disease, Discula destructiva, causes leaf, twig and branch dieback beginning in the lower part of the tree. Deciduous - wavy-edged leaves to 8cm (3in) long with pointed tipsShades of pink - All shades of pink through to Carmine (red) Protect from harsh sun in hot regions. Home gardeners should lay a 2- to 3-inch layer of organic mulch, such as leaves, over the soil surrounding the kousa dogwood without pressing mulch against the trunk. Information on Black Tree Mold on Red Maple Trees, Ohio State University Horticulture & Crop Science: Cornus Kousa, University of California Statewide Integrated Pest Management Program: Sunburn, Sunscald or Excessive or Inadequate Light, University of California Statewide Integrated Pest Management Program: Wind Injury, Clemson Cooperative Extension: Dogwood Diseases & Insect Pests, Alabama Cooperative Extension System: Dogwood Diseases in Alabama, North Carolina Cooperative Extension: Insect Pests of Dogwood, North Carolina State University Integrated Pest Management: Dogwood Borer, North Carolina State University Integrated Pest Management: Dogwood Clubgall Midge, University of California Statewide Integrated Pest Management Program: Aphids. Kousa dogwood trees are susceptible to scorch, particularly during windy periods when the weather is warm and dry. A good rule of thumb is to allow the top layer of soil to dry out before watering again. Dogwood trees are damaged by the feeding activity of the dogwood borer larva under the bark of the trunk and limbs. aka Kousa or Asian Dogwood. In late spring, showy bracts atop green foliage engulf the tree. The wing covers have wavy, light-colored indentations. Dropped fruits can ferment and attract yellow jackets. It is important to carry out a soil test to determine the nutrients that the soil is deficient in. Cercospora and septoria leaf spot, caused by the pathogens of the Septoria species and Cercospora cornicola, result in spotted foliage, particularly during warm, wet weather. They require a fair amount of water, so locating them in partial shade is a better option for best success. Kousa dogwood is in demand for its grower friendliness and is an excellent substitute for the common flowering dogwood, particularly since it is resistant to the dogwood borer and dogwood anthracnose problems that have plagued the common dogwoods in recent years. These fungal diseases lead to defoliation and decline when left untreated. Resistant to the anthracnose (Discula) that is common on flowering dogwood. The result is reduced leaf development and stunted leaf growth, with the leaves displaying yellow to red hues, often wilting and falling to the ground. Aber schauen wir uns die Erfahrungen zufriedener Probanden einmal präziser an. Larvae display creamy-hued bodies with a dark head and a mature length of approximately 3/5 inch. It is sometimes referred to as the Chinese dogwood. Planting a Kousa dogwood can extend the spring flowering season several weeks since it flowers just after flowering dogwood. Dogwood Leaf Scorch Leaf scorch is a common problem in dogwood tress, and a sign that your tree is under water stress. Other pests and diseases are usually not problems, and deer normally leave these trees alone. Too much fertilizer can injure dogwood trees and it isn't really necessary. And if this one is well mulched now - something that should be standard practice with all woody plant installations anyway - that will have some protective effect in regard to frost penetration. Over-application of fertilizers over the root area can kill the roots. Native to Asia. The adults may be seen running over the bark of trees and fly when disturbed. Common problems. Here’s the problem, this is where the plan went wrong. Masses of creamy white flower-like bracts cover the tree during bloom. Dogwood Problems; Symptoms: Probable Cause: Leaves Spotted; Dieback; Cankers: Dogwood Decline: Slow Growth; Pale Foliage: Root Competition : Tunnels Under Bark; Branches Girdled: Dogwood Borers: Small Bumps On Leaves And Branches: Scale Insects: Sunken Spots On Leaves: Spot Anthracnose: Leaves Stunted; Swellings On Trunk/Roots: Canker: Flowers; Leaves Or Twigs Wilt: Blight Kousa Dogwood should be planted in place of Cornus florida where Discula anthracnose is a problem. The spot we go to forage our Kousa dogwood fruit has trees growing in full sun and in part-full shade, so we get to see a side-by-side comparison. This is a tree with everything going for it, and with many seasonal surprises in store for its owner. Special accent. Bloom occurs in late spring. These flowering plants perform best when grown in U.S. Department of Agriculture plant hardiness zones 5a to 8b. Though technically edible, they're best left for the birds and other wildlife foragers. These small insects display bodies in the shape of a pear in a wide variety of colors, such as green, yellow or black. Make Baby Plants! Over time you're likely to see this tree wearing it's own version of camo or camouflage, with patches of green, brown, tan and gold. If you've been afraid to plant a Dogwood tree for fear of disease and/or borer problems, fear not. In May, even before the leaves appear, beautiful white blossoms unfurl from their eye-catching winter sheaths to trumpet the arrival of spring. It is resistant to the dogwood anthracnose disease, caused by the fungus Discula destructiva, unlike C. florida, which is very susceptible and commonly killed by it; for this reason, C. kousa is being widely planted as an ornamental tree in areas affected by the disease. You are buying 1 Cornus kousa Dogwood Tree 12-18 in a quart pot. Jersey Star dogwoods are crosses between Pacific dogwood (Cornus nuttallii) … It is not rated as an urban tough tree and needs open soil space to look its best. Small wet areas on the bark in early … Flowering Dogwood (C. florida) Mature Height/Spread: The flowering dogwood will grow 40 feet tall … Sucking pests, such as aphids, feed on dogwood plant tissue by literally sucking fluid from tender foliage. Dark green foliage in spring-summer with good autumn tones before fall. Make Baby Plants! It spreads via water splashing the spores from leaf to leaf. Pink Diamond Hydrangea, Growing, Selling and Propagating this Amazing Plant. The Superstar of Flowering Trees One of the showiest flowering trees native to North America, the White Dogwood is sheer perfection. Seed grown. History and Origin of the Pink Kousa Dogwood. As midges feed, galls, or swellings, form on surrounding plant tissue, sometimes causing twig death. A Different, Simple Landscape Design Idea. Take a Peek. Full sun. Visit What's wrong with my shrub? Mulch helps to acidify soil, deter weed growth and conserve moisture. Insects Are Infesting My Silver Maple Trees. Kousa Dogwood Problems. Leaves turn deep purplish-red in autumn. The fungus is killing tree-type dogwoods in the wild. In addition to the heat, high winds contribute to scorch, as frequent gusts damage dry foliage and bark. Numerous small shoots may grow from the trunk. An early symptom may be the sloughing of loose bark. Some shade will improve performance in restricted soil spaces. CORNUS CHINENSIS `Milky Way' produces more flowers. Apply a thick layer of mulch to keep root zone cool in summer. Dug nice big hole, mixed in some compost with the soil from pot. The tree usually dies in three to five years. Pay close attention to kousa dogwoods and put control methods into effect quickly at the first sign of a problem. So klingt das alles gut - pH-Wert und lockerer, humoser Boden sind in Ordnung, die Unterpflanzung ist kein Problem. The Pink Kousa Dogwood is a very special form of the kousa dogwood, Cornus kousa var. They actually prefer a spot with morning sun and afternoon shade. Kousa dogwood trees are susceptible to scorch, particularly during windy periods when the weather is warm and dry. “Gold Star” has a golden stripe down each leaf in the spring, which darkens to a solid green later in the summer. © Copyright 2020 Hearst Communications, Inc. Cornus kousa ‘Summer Gold’ is a small upright tree growing erect when young and becoming broader as it matures. The Asian Dogwood is often described as a large shrub because of its multi-stemmed habit rather than having a single trunk. Often feeding in groups on leaf undersides, injury may result in distorted, yellowed foliage. It is not rated as an urban tough tree … Cornus kousa is a pretty problem-free tree in most places. Blütenhartriegel (Cornus kousa) – Pflege, Schneiden. Cornus Kousa 'Satomi' from Burncoose Nurseries FLOWERING DOGWOODS | available online to buy - Information: deep pink bracts. Damage leads to girdling and tree death, particularly when left untreated. Cause: Spot anthracnose is a fungal disease that targets dogwoods. New growth is covered with a fine, white, powdery coating, typically on the upper surfaces of the leaves. The biggest issue tends to be dogwood anthracnose. Kousa Dogwood should be planted in place of Cornus florida where Discula anthracnose is a problem. View Map. If a dogwood tree is planted too deep into the soil, then the roots would suffocate. The bright green foliage has golden yellow margins through the growing season, becoming pink in the fall prior to the entire leaf turning bright red. Providing optimal care to kousa dogwoods gives them a heightened capacity to overcome problems, particularly when compared with neglected trees. Suckers may need to be removed to maintain plant width. The adult pests -- tiny orange flies -- lay eggs on leaves. Splendid profusion of large white bracts followed in fall by hanging red fruit. How to Control Lilac Borers. We have all heard the fables about how even the smallest can bring down the mighty. A Kousa Dogwood Tree. Terms of Service. Pruning: Regular trimming isn’t necessary with Kousa dogwood, but you may want to selectively prune your tree in order to show off the dramatic branches and bark. Cornus kousa: Kousa Dogwood 2 Leaf color: green Fall color: purple, red Fall characteristic: showy Flower Flower color: white/cream/gray Flower characteristics: very showy Fruit Fruit shape: oval, round Fruit length: .5 to 1 inch Fruit covering: fleshy Fruit color: red Fruit characteristics: attracts birds; showy; fruit/leaves not a litter problem Growing, Selling and Propagating Silver Dollar Hydrangea, The Perfect Plant for a Shady Garden, Jack Frost Brunnera. Comments Beautiful flowers, fruit, fall color, and nice winter silhouette provide year-round interest. Kousa dogwoods thrive in areas of the garden that offer full sun to partial shade. Wer einen Solitärstrauch sucht, der im Sommer mit seiner Blütenpracht alle Blicke auf sich zieht, der liegt mit dem Blütenhartriegel genau richtig.Aber auch im Herbst hat der Cornus kousa mit seinen dekorativen roten Früchten und seiner spektakulären Laubfärbung einiges zu bieten. This is a serious fungal disease of dogwoods that is prevalent in states east of Missouri. One of the reasons we love these plants as they age is that they develop what's called exfoliating bark. Apply a fungicide during bud break to protect new flowers, twigs, and foliage. Sooty mold will diminish on its own when aphids are eradicated. Sollten Sie nach wie vor Bedenken hinsichtlich Cornus satomi haben, fehlt Ihnen vielleicht bloß die Lust, um den Problemen den Gar auszumachen. Kousa Dogwood Varieties. Adults -- deep blue moths -- lay eggs in injured areas of tree bark. Feed in early spring. For example, one recent introduction features bright orange fruit instead of the more common red fruit. Disease, pest, and problem resistance. It is not rated as an urban tough tree and needs open soil space to look its best. Powdery Mildew: Erysiphe pulchra (formerly Microsphaera pulchra) is the fungus that attacks leaf surfaces and tender shoots and causes powdery mildew. Salt sensitive. Cornus kousa, commonly called Kousa dogwood, is a small, deciduous flowering tree or multi-stemmed shrub that typically grows 15-30’ tall, with a vase-shaped habit in the early years but eventually maturing to a more rounded form. Though similar, cercospora spots are light brown with an irregular shape and indefinite edges while septoria spots are deep brownish purple. Spider Mites on Leyland Cypress. Dogwood trees are widely known for their beauty, and the Kousa variety adds a toughness that makes this species an excellent choice for home landscapes and urban areas. On dogwood, it can be a serious problem on young trees that are planted too deeply and on stressed, older trees. With a preference for moist, well-drained loam soil with an acid pH, these trees will continue to grow successfully in neutral or alkaline conditions. After hatching, larvae tunnel into trees where they feed on plant tissue and develop. Gardenerdy tells you how to grow and care for your Kousa Dogwood. If the tree is planted near a walkway, you’ll probably need to remove some lower branches in … Growth is best on moist, loamy, well-drained soil (not heavy clay) with mulch or leaf litter accumulated over the roots. The dogwood tree can be susceptible to various pests and diseases. Kousa dogwood should be planted in place of Cornus florida where Discula anthracnose is a problem. Origins: This dogwood is one of a series bred at Rutgers University, named the Jersey Star series. The dependable Cornus kousa, often called Chinese Dogwood, Japanese Dogwood or Kousa Dogwood, has demonstrated excellent resistance to both the dogwood borer and anthracnose disease. Cornus kousa ‘Summer Gold’ Summer Gold Dogwood. Do not prune when the tree is flowering in the spring, or you will make it vulnerable to dogwood borers, one of the very few pests that seriously affect it. In addition, the application of a fungicide with an active ingredient such as chlorothalonil offers effective control. Lookalikes: Root rots, borers, crown canker Kousa dogwoods, for instance, are very resistant to many of the problems that affect flowering dogwoods. Prune when the kousa dogwood is dormant, in late fall or early winter. To control aphids, home gardeners may spray them from their feeding sites with a powerful stream of water, and release natural enemies, such as parasitic wasps or syrphid flies. “Satomi” and “Stellar Pink” have pink flowers instead of … Kousa is a good substitute for the native dogwood in many urban landscape situations. To control this problem, gardeners should remove and destroy the affected tree. Step 2 Think of the kousa dogwood in thirds. Always plant at the same depth as in the nursery. Water deeply, regularly during first growing season to establish root system; once established, prefers moist soil, but tolerates mild drought. Some shade will improve performance in restricted soil spaces. Disease, pests and problems. Tarah Damask's writing career began in 2003 and includes experience as a fashion writer/editor for Neiman Marcus, short fiction publications in "North Texas Review," a self-published novel, band biographies, charter school curriculum and articles for various websites. Watering: Irrigate your Kousa dogwood during drought. Dogwood is deciduous. Adding too much nitrogen through fertilizers can reduce flowering of these trees. Plant a decline-resistant kousa dogwood (Cornus kousa) instead. 37 Ways to Know You’re Addicted to Gardening, https://mikesbackyardnursery.com/2015/01/easy-summertime-plant-propagation-techniques-can-home/, How to Stop Mulch from Washing Out of Your Beds. Also referred to as sunburn, plants may appear to be diseased or dying when affected by scorch. To control these diseases, gardeners should remove and destroy affected plant parts and debris. Some yellow on leaves. Cornus kousa is a small deciduous tree 8–12 m (26–39 ft) tall, in the flowering plant family Cornaceae.Common names include kousa, kousa dogwood, Chinese dogwood, Korean dogwood, and Japanese dogwood. The flower bracts are large, star shaped and a deep pink. They are found throughout the area where flowering dogwoods are grown. Borers and leaf spots. The following describes propagation methods for Kousa dogwood, the tree’s root system, preferred soil types, cultivars, damaging agents and pests, allegenic potential, and uses. The C. kousa is grown for its flowers in addition to its hardy, dependable nature. The dogwood … The late spring blooms are probably the trees largest selling Autumn leaves have red-scarlet tints. 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