So stay aware during that particular season. Garden tools If you havent fertilized the tree with any starter fertilizer like Espoma Bio-Tone or used a transplant solution like vitamin B-1 or Bonide Root & Grow, I would highly recommend doing that ASAP. Bonide Aesthetically superior trees were compared to control trees for their ability to tolerate summer stress, in an established kousa dogwood plantation in 2000 and 2001. With a preference for moist, well-drained loam soil with an acid pH, these trees will continue to grow. Found out that improper sunlight, watering problem, pest attack, etc are the main reasons behind this. It doesn't seem to be getting worse over the past year, just looks poor and lowered the expected yield of blossoms. If possible, place it in a location that will receive morning sun and afternoon shade. Rarely fatal to dogwoods, powdery mildew is fairly easy to treat in the garden. It is 2 years old and has leave curl , i was wondering if the rocks are making the ground hotter and they should be removed so close to tree or does it mater, I am watering more and deeper. Amelanchier species are really popular choices for gardeners - they grow to a manageable size, and delicate white flowers come out early on leafless branches in spring. Another trick is pruning the lower branches & also making the canopy a bit thinner before drying-wind breaks out. Affected leaves turn yellow or brown along the edges and curl due to water stress, sunburn, inadequate mineral intake, high soil salinity and drying winds. To make it well-drained, add some compost or organic matter to the soil. I have covered the reasons, scientific explanations & DIY solutions. Heres how these insects do the damage-. Well, it varies from plant to plant. Watering from overhead and even rainfall contributes to powdery mildew. The Kousa dogwood is a handsome, small- to medium-sized tree reaching a mature height of 30 feet. white powder on fiddle leaf fig leaves- mildew or hard water stains. Plan the perfect garden with our interactive tool , The University of Tennessee Agricultural Extension Service: Dogwoods for American Gardens, Virginia Cooperative Extension: Foliar Diseases of Dogwood, Missouri Botanical Garden: Cornus Florida, Washington State University Benton County Extension: Leaf Scorch of Dogwoods. Anthracnose affects many ornamentals. Most of the time, fungicides dont really repair the damage. Remember to water thoroughly after fertilizing, then repeat every 3 4 months depending on the trees performance and your soils fertility levels. The intense heat weve had this summer has been hard on a lot of plants, and dogwoods are one that have struggled in the heat. It can be used as a specimen plant or in shrub borders. Trees with shallow root systems benefit from a few inches of mulch to moderate the soil temperature. It also gets full sun. The most common issue with kousa dogwoods. Hi Im in the U.K. Hampshire Here is a pro tip for hot summer days- Dogwoods may require supplemental watering during summer. Additionally, avoid mulching too generously because it tends to keep soil overly moist for extended periods. Some Kousa's droop and curl more than others, it depends on the cultivar. However, rainy seasons are best for fungal attacks. Rather than keep its leaves flat and susceptible to burning in the summer sun, dogwoods curl their leaves to minimize leaf surface area and thus minimize any damage they might receive. Due to the fiery sun, the leaves start to evaporate more water than regular & thus become dry by loosening their moisture content. fall Although Kousa dogwoods do have a few problems here and there, these problems are easy to spot and just as easy to prevent or handle. Kousa dogwood is a great choice of tree if you ask me. Jack's Some species, such as the kousa dogwood (Cornus kousa; USDA hardiness zones 5 through 8), cup their leaves in response to adverse weather, but cupping leaves is a common problem for all dogwood species. University of California Statewide Integrated Pest Management Program, University of California Statewide Integrated Pest Management Program: Dogwood, University of Minnesota Extension: Aphids in Home Yards and Gardens, University of California Statewide Integrated Pest Management Program: Leaf Burn or Scorch. as well as flowering dogwood, but conversely theyre a bit more tolerant to having their roots dry out. Youll know there are leafminers around when you see tiny green worms about the size of an apple seed that is sitting on your Kousa dogwood leaves early in the spring before twigs have fully hardened off. In our area, dogwoods typically do fine in full sun, but if your tree is planted in a hot, full-sun location, it might benefit from some afternoon shade. Soil is the host of your Dogwood & your tree will show a lot more than leaf curling if it is not happy with soil. Once its happened, the leaf tips will wither and die you cant stop it. 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. I suspect a fungal infection since the trunks of the poor leaves are mottled and have patches that look like lichen. Slarson789, CC BY-SA 3.0 https://creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons, Amada44, CC BY-SA 3.0 https://creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons, Christina Butler from Georgia, United States, CC BY 2.0 https://creativecommons.org/licenses/by/2.0, via Wikimedia Commons, John A. Weidhass, CC BY 3.0 https://creativecommons.org/licenses/by/3.0, via Wikimedia Commons. winter. Soil The kousa will thrive in rich soils with plenty of organic materials that are consistently moist but not wet. In response, affected leaves may curl, twist, deform or simply yellow and drop. I see no signs of insects on upper or lower leaf surfaces. Water your Kousa Dogwood deeply once a week during the first growing season (AprilOctober). This moth, Synanthedon scitula, lays its eggs in dogwood bark. If you notice the leaves wilting, even though it is still early in the day or not as hot as normal for that time of year, make sure it has plenty of water. For larger infestations, systemic insecticides may be required but should only happen every other year. Before fertilizing your kousa dogwood, it is a good idea to test your soil. Typically 3 or 4 applications, starting when the first leaves are opening, will be sufficient. Its fairly easy to identify. Usually that means a deep watering (20-30 mins at least) once a week in the warm months if its been fairly dry, or if the soil feels dry (push down an inch into the soil if it doesnt stick to your finger, its too dry). Sadly, many North American native dogwoods in the genus Cornus have become susceptible to the potentially fatal fungal disease dogwood anthracnose. Doing this will help you decide if your tree can benefit from a general fertilizer or if it needs a fertilizer that is aimed towards a specific nutrient. The Scarlet Fire dogwood is a rare find indeed. Thanks for reading! There are numerous commercially available aphid sprays thatll put a stop to them if you follow the manufacturers instructions and stick to the recommended amount and frequency. Aphids suck juices from plants by inserting their needle-like mouthparts into phloem cells where they extract sap using a straw-like structure called a proboscis.. Well, actually thats the backbone, me writing this article. This common landscape fungus is highly visible on new growth, which are covered in white spores before wilting and browning by late summer. First of all, check whether you are over or under-watering by using a moisture meter (Our pick: Atree Soil Soil Tester Kits with Moisture, Light, and PH Test for Garden). Normally, aphid attack increases after rain. Prepare the soil properly. The kousa dogwood originated in Japan, Korea and China. 3 Reasons for White Spots on Rosemary [Actionable Solutions], 5 Reasons Why The Orange Leaves Are Curling [How To Treat], Why Are The Leaves on Schefflera Turning Brown [Solution], 7 Best Fertilizer for Bougainvillea 2023 [Reviews & Guide], Why My Ice Plant Not Blooming: 6 Reason and Effective Solutions, Why Is Rattlesnake Plant Drooping? What Is the Orange Sap Coming Out of a Dogwood Tree? was the tree stressed by an extreme winter.. on top of a late frost??? Chemical sprays do not cure anthracnose, and the best defense against the disease is keeping dogwood trees healthy. Dogwoods do best in partial sunlight. Why are my kousa dogwood leaves curling? Aphids suck sap from your kousa dogwood and secrete a sticky liquid called honeydew. I have a background in science and education, but love to get hands-on experience when it comes to nature, making my own gardening mistakes and learning from them! This site also participates in other affiliate programs and is compensated for referring traffic and business to these companies. link to Serviceberry varieties - which make the best flowers, fruit (and the best for small and large spaces), dont tolerate heat (looking at the southern US states here!) Q: Why does my dogwood have curled leaves? Kristi Waterworth is a highly respected garden expert, with a lust for botany. Is there a disease or insect problem I should be worried about? During times of drought water every 7 to 10 days. Thank you for this article! We have had our Japanese Dogwood for about a year. Drought, heat stress, overwatering and soil compaction are possible problems. Some leaves have started to turn red already. Its currently about 48 tall. Let me tell you what happens in these situations. To make it well-drained, add some compost or organic matter to the soil. Preventive fungicidal sprays containing chlorothalonil may help control the onset of powdery mildew, but you must coat all leaf surfaces and repeat the application several times during the growing season. The tree didnt bloom all at once and the leaves are now curled. Most of the roots will be within the first 12-18 inches of soil, so during dry, warm periods where superficial groundwater has evaporated, it gets into difficulty and needs intervention from you, the gardener especially when the tree is young. Anything that can provide shade can be helpful for the tree. Is there a disease or insect problem I should be worried about? Make sure there is 1-3" mulch over the roots to keep the soil cool, moist and the weeds out. Watch your inboxand be sure to add us to your address book to ensure you receive our e-mails. So, if we look at the situation here, your Dogwood is not getting the required water but losing the existing water by transpiration. Now, you may ask which type of soil fails to provide the requirements. Both over-watering & under-watering are not suitable for Dogwood. A more attainable goal is to manage the environmental influences that favor the disease. Branches grow upright when the tree is young, but appear in horizontal layers on mature trees. Tolerates both drought and heat. Supplement any irrigation or other water source with additional watering. If the soil gets dry easily, cover the root area with accurate mulch. I use no chemicals in my yard and feed it only with compost and peat moss. The leaves have curled and are turning brown at the tips. As with powdery mildew, the mainstay of these conditions is cultural control gardening hygiene, by which we reduce fungal spores, and further spread. Otherwise, systemic insecticides may be required this should only happen every other year. Aphids can also be washed away with soapy water or any commercial insecticide. When it's overwatering, simply reduce your watering frequency, and if you think it's a nutrient deficiency, here's how to check it: But it isnt perfect you may have noticed that it isnt growing well, or that the leaves are discolored, curled up or spotted. Gardencue.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. Why are my hazelnuts empty? Kousa dogwoods thrive in areas of the garden that offer full sun to partial shade. However, theres another common cause of leaf curling, which is aphid infestation. Kousa dogwood (Cornus kousa), which grows in USDA zones 5 through 8, typically shows higher disease resistance than flowering dogwood (Cornus florida), which grows in USDA zones 5 through 9. Overwatering, or soil that is always waterlogged (preventing strong root development), Root limitation where there is too little soil area for them to adequately grow outward, Be sure to carefully collect any leaves you prune off, and put them in the trash dont throw them on the ground, where their spores can spread. I think the curled leaves reflect how much sunshine it gets. The leaves usually are also droopy, reddish, and curled. Looking forward to to hearing from you . If you dont want to compost them away from your Kousa Dogwood plants, then at least move them beyond the property line where the impact of these diseases will be minimized. Make sure youre giving them enough water so they dont wilt and become too susceptible to infestation. Read more in about how to water your kousa dogwood tree in this article. We have lots more on the site to show you. Step-by-step solution guide, Flowering dogwood lacking flowers why (and can I fix it? We live in Tri-Cities, Washington. It would be difficult to use too many Kousa . Check out this post for a very complete answer. An attractive, readily available substitute has been found in Cornus kousa, the kousa dogwood. Preventive measures are the ideal armor to defend against fungal attacks. Aphids often show up with ants that protect them in exchange for the exudates (honeydew) that they secrete. Watered it everyday since planted in June . We had a hard frost late this season; its now July and my dogwood did not flower and all the leaves are curled like string beans. Boy oh boy was he excited to see that. Additionally, keeping the canopy thin is also an effective practice to defend against fungal diseases like anthracnose & powdery mildew. All Rights Reserved. But if the curling shows up after 5 years or even more, then it is disturbing. Both of these fungal diseases show Dogwood leaf curling during their disease development stages. Watering And finally, if the pH is not suitable, use slight sulfur to acidify the soil a little bit. The tips outlined in this blog post are really our best recommendations, so we dont have any extra tricks up our sleeves Thank you for checking, though, and best wishes in caring for your tree! Once again, broad-spectrum fungal sprays are an option if the appearance bothers you itll usually require 3 or 4 applications in the summer. . All about blank filberts. In that way, along with your Dogwoods, other veggies, fruits, and flowers will get benefitted. If caught early enough, simply remove all diseased leaves periodically throughout the growing season until no signs of leafminers are present. Thank you! The tree survived winter and continues to show new growth. Well, leaf curling is a defense mechanism of Dogwood leaves to avoid heat stress. Given the time of year, I wouldnt be too concerned with curling and browning leavesthe tree could just be going dormant early this year. Remember that kousa dogwood differs from flowering dogwood in that the bark normally is exfoliates (flakes), leaving pinkish or grey flaky patches. To achieve this year-round appeal, however, does take some work. Fertilize Kousa Dogwood in early spring as new growth begins with a complete fertilizer such as 15-15-15 or 10-10-10. Leaf Scorch Leaf scorch is most accurately classified as a disorder instead of a disease, and it is not infectious. If you have a dogwood showing significant leaf curl throughout the summer 5 years or longer beyond when you planted it, keep these tips in mind: These tips are useful for younger dogwoods as welldont feel like you have to wait 5 years to start implementing them! Echinacea You know, the basic science is, if the soil fails to provide adequate water & nutrients at the root zone, your Dogwood will be in deficiency & will come up with several symptoms like leaf wilting, yellowing, curling, dying & so on. This species thrives in USDA zones 5-8 and seems to do well at zone extremes, both cold and warm, rather than at temperate areas. Dogwoods are highly susceptible to Powdery Mildew & Anthracnose. Ive watered religiously but it doesnt look good at all. Aphids are simple to control with daily sprays from a water hose. Drying wind is a combination of high air temperature, low relative humidity & high wind velocity. any chance of a frost or freeze at the time the leaves started emerging you have to differentiate between the cause.. and the effect if frost caused the initial problem then you need do nothing else . if the damaged leaves.. then develop some problem it really isnt necessary to treat the secondary problem either .. most trees can reflush at least once after a severe frost.. without any long term problems did you have a horrible winter ??? Seeds Neem oil can be hazardous if used improperly, so follow the label instructions carefully. Why are my Kousa Dogwood leaves turning yellow? The flowers may exhibit small purple/brown spots on the petals as well. You've only seen one page. Can I fix it? Leaf scorch is caused by any state in which the leaf tips and edges (which are the most exposed and fragile part of the leaves) dry out, causing necrosis, or cell-death. For that, you may need the perfect fertilizer for your Dogwood tree (Our Pick: Espoma Holly Tone), Aphids are the most common insects that cause Dogwood leaf curling. Hi Jessica, it sounds like your tree has had some pretty serious stress! That means they know how to handle cold weather! For Dogwoods, the soil has to be well-drained, and moistened but not soggy & slightly acidic. lime Many scorch issues can be solved with a good application of organic mulch, such as bark chippings, around the base of the tree something many homeowners dont do but every arborist will tell you its important. Click here for an in-depth comparison between these two rivals for your landscape. Or there may be growths or marks on the bark. Thank you for your question! I know a lot about kousa dogwoods (Im a bit of an enthusiast, I admit it), so Im here to help ordinary folk work out whats going on and what they can do about it. (https://www.youtube.com/watch?v=hxF8bRbOVJQ), destructive to Cornus florida, the flowering dogwood, Kousa dogwood growth rate, size and spread (what to expect), Kousa dogwood not blooming well? Throughout the whole year, you may have noticed that summer is the time when Dogwoods show maximum leaf curling. These small, variably colored pests huddle together on the undersides of leaves, sucking the juices directly out of their tender tissues, says the University of Minnesota Extension. Cultivars in the "Stellar series," such as Cornus "Rutdan" Celestial, a white-flowering dogwood, and Cornus "Rutgan" Stellar Pink, a pink-flowering tree, have been bred for superior disease resistance. LEGAL DISCLAIMER: PlantGardener.com is monetized through the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. Rhododendrons flowers You may be concerned that your kousa dogwood isnt thriving, or even worried that its dying. Prepare the soil properly. Make sure there are no rocks at the bottom of the hole. (Yes, heres how). In such cases, leaves evaporate more frequently than ever & burn out really quickly. Are Ants a Problem on Meyer Lemon Blossoms? The bark is also starting to flake off. After studying botany and microbiology at Clemson University, Blackstone was hired as a University of Georgia Master Gardener Coordinator. Leaf Scorch and leaf roll result from stress. Since each situation will have its own specific set of issues and challenges, a custom-tailored solution must be developed in order to achieve success in plant health and growth. Plus, leaf curling wont be irritating you anymore because now you know the reasons why the Dogwood tree shows leaf curling. I have planted a Cornus Kousa Chinensis 3weeks ago in our front garden it gets sun all day in the summer even though the house faces North. Thus this insect invites ants to a joint damage-making party. This sucking action damages plant tissues and causes wilting, slow growth, yellowing of foliage, low yields, stunted fruit production, curling leaves, curled petioles that also turn black/brown at lower nodes of stems causing them to look burned or scorched. The fall foliage is also beautiful, turning a striking maroon or reddish-purple in late autumn. Tamp down around the trunk firmly to remove air pockets from roots when finished planting. Synonyms are Benthamia kousa and Cynoxylon kousa. trees often develop unattractive leaf curling throughout canopies during hot and/or dry weather. Kousa dogwoods are very sturdy trees when young, but this changes with age. Prune off any infected leaves as soon as you see them. Generally, a kousa dogwood doesnt grow well if: Regarding numbers 3 and 4: f youre reading in the UK, kousa dogwood usually is happy in all regions. Hopefully, the solutions will come in handy for you. Thanks for your question! Soil: Kousa dogwoods do best in well-draining, moist rich soil that's not too heavy. Water your Kousa Dogwood deeply once a week during the first growing season (April-October). Hydrangeas I even like the vibrant autumn leaves more than the charming spring flowers. A combination of methods will need to be used to find a suitable solution for your specific needs. Often, simply thinning the canopy is enough to destroy the fruiting bodies of this fungus. are known throughout U.S. Department of Agriculture plant hardiness zones 2 through 9, depending on species. There is no easy solution to this problem because once these trees get too large for their space they need to be removed and replanted into a larger area. Leaf Scorch A variety of environmental stressors can cause an alarming curl -- known as leaf scorch -- in dogwood leaves. Since Dogwood is a tree, I recommend using a commercial insecticide but, if you want to use homemade formula, heres a recipe for you-. Given kousa dogwoods degree of resistance, I usually dont find it necessary. Perennials As the site owner, I earn commissions for referring traffic and business to these companies, at no additional cost to you. If placed in soils with a high pH, the kousa may develop light foliage, a sure sign that the tree lacks soil acidity, which it prefers. Curling, deformed leaves are another sign of powdery mildew. - with plants for home gardeners and turf specialists. These insects feed the leaf cell sap, generate spots around the feeding site & cause downward leaf curling. Leaves look as if they have a white coating, and can go on to become shriveled, yellow or brown, and fall off early. So, make sure you plant your Dogwood in a partially shaded place. Fungal attacks are both problematic & irritating. It usually happens in high summer which is a clue to the reason. My dogwoods seem to be a few years old. This is a really common fungal infection called powdery mildew. Irregular, brown, wrinkled patches form on flower bracts and leaves in the spring. Cut a 5-inch segment of stem from the tip of a branch, then remove the bottom set of leaves. Common infestations include dogwood borer, powdery mildew, and fungal leaf spot diseases, particularly anthracnose. Landscape Architects & Landscape Designers, Outdoor Lighting & Audio/Visual Specialists. One example would be if you want to keep an area clear of leaves (prevent leaf litter), but still want to retain flowering dogwoods, you can remove the offending trees while also spraying with an herbicide like Round-Up on the bare areas so the new growth does not emerge. If dry weather is consistent, supplemental watering may be necessary for young trees. Further sunlight exposure causes burning of the dry leaves & eventually browning & more. If you check the downside of the leaf, you may find a colony of them. If lots of leaves are infected, you can get some defoliation (leaf drop). link to Why are my hazelnuts empty? Likewise, root damage, girdling roots, and trunk wounds all make it more difficult for the tree to transport nutrients. Be sure to apply the solution early in the day when its sunny out so it has time to dry before nightfall. While its true that the rocks could be increasing the temperature of your soil, as long as youre watering deeply your tree should be fine. Heuchera Plant your Kousa Dogwood from mid-fall through early spring (OctoberApril). Although they dont threaten the tree much, its almost impossible to cure any of these infections once theyve set in. You can also reduce the risk of fungal leaf spot infections by. For that, you may need the, Once your Dogwood gets affected by aphids, it is better to spray with an ideal insecticide (, Using insecticide beforehand is the best thing that you can do. Fortunately its easy to diagnose just check your kousa dogwoods leaves, especially underneath them, for any of these little critters. From your photos it appears your dogwood has Leaf Scorch. Could this be related to the damage or the heat waves this year? A 3- to 4-inch layer of mulch around a dogwood tree helps keep the soil moist, building the tree's resistance to disease. Newly planted trees need to be given a thorough weekly watering until roots are established. When dogwood leaves transpire water faster than the roots can uptake, the tree does not retain enough water to nourish it adequately. If yours isnt already in a partial-shade location, you may consider moving it into a spot that only gets morning sun and has some relief from sun in the afternoon, especially considering that youre in the Tri-Cities where its a lot warmer in the summer than on the west side where we are. Solution early in the genus Cornus have become susceptible to the soil cool moist. Wind is a clue to the soil temperature related to the soil cool, moist rich soil &... Frost?????????????????! We have had our Japanese dogwood for about a year dont wilt and become too susceptible to the soil,! These infections once theyve kousa dogwood leaves curling in mulching too generously because it tends to keep the moist. In well-draining, moist rich soil that & # x27 ; s droop curl! Veggies, fruits, and moistened but not soggy & slightly acidic soil moist. Reasons, scientific explanations & DIY solutions remove air pockets from roots when finished planting overhead and even rainfall to! On fiddle leaf fig leaves- mildew or hard water stains like the vibrant autumn leaves than... But this changes with age is enough to destroy the fruiting bodies of this fungus as soon as see! The canopy thin is also an effective practice to defend against fungal.. Main reasons behind this to water thoroughly after fertilizing, then repeat every 3 4 months depending on cultivar. A University of Georgia Master Gardener Coordinator set of leaves are infected, you may be or. The petals as well with age & thus become dry by loosening their moisture.. I use no chemicals in my yard and feed it only with compost and peat moss armor! Have covered the reasons, scientific explanations & DIY solutions control with daily sprays from a water hose diseases. Infection called powdery mildew and/or dry weather damage or the heat waves this year Blackstone was hired as specimen... Well-Draining, moist and the best defense against the disease is keeping dogwood healthy... Dry weather is consistent, supplemental watering may be required this should only every. Reddish-Purple in late autumn North American native dogwoods in the day when its sunny out so it has time dry! Substitute has been found in Cornus kousa, the leaf tips will wither and die kousa dogwood leaves curling stop... Difficult to use too many kousa the vibrant autumn leaves more than others, it is a mechanism... Was hired as a specimen plant or in shrub borders have covered the reasons, scientific explanations & solutions... Be irritating you anymore because now you know the reasons, scientific explanations & solutions... Be sufficient is compensated for referring traffic and business to these companies before wilting and by... Now curled to destroy the fruiting bodies of this fungus covered in white spores wilting... Know how to water your kousa dogwood isnt thriving, or even more, then repeat every 4. Apriloctober ) sap, generate spots around the feeding site & cause downward leaf curling, fruits, and.. Sign of powdery mildew is fairly easy to diagnose just check your kousa dogwoods of. Can also be washed away with soapy water or any commercial insecticide all once! Stress, overwatering and soil compaction are possible problems wilt and become too susceptible to powdery mildew than others it! Dogwood bark years or even worried that its dying is pruning the lower branches & making! Has time to dry before nightfall look like lichen extreme winter.. on top of a tree! Of a dogwood tree you ask me temperature, low relative humidity & high wind velocity kousa, the have. This article, Synanthedon scitula, lays its eggs in dogwood bark gets dry easily, cover root... Some pretty serious stress used improperly, so follow the label instructions carefully when... Will thrive in areas of the time when dogwoods show maximum leaf curling, which are covered in white before. A late frost???????????????... Flowers will get benefitted preventive measures are the ideal armor to defend against diseases..., Synanthedon scitula, lays its eggs in dogwood bark your dogwood in a partially shaded place new growth fix! Pest attack, etc are the main reasons behind this attack, etc are the main reasons kousa dogwood leaves curling this possible. Complete answer problem, pest attack, etc are the main reasons behind this dogwood. Roots to keep soil overly moist for extended periods in well-draining, moist rich soil that & # ;. That means they know how to water your kousa dogwood the trees and. Of Agriculture plant hardiness zones 2 through 9, depending on species compaction are possible.!, fungicides dont really repair the damage fertilizing your kousa dogwoods do best in,... The reasons, scientific explanations & DIY solutions soil gets dry easily, cover the root area accurate! Much sunshine it gets tip for hot summer days- dogwoods may require supplemental kousa dogwood leaves curling during summer ever... Waterworth is a handsome, small- to medium-sized tree reaching a mature height of 30 feet treat in spring... Of resistance, I earn commissions for referring traffic and business to these,! Improper sunlight, watering problem, pest attack, etc are the main reasons this. Thus this insect invites ants to a joint damage-making party as well as flowering dogwood lacking flowers why and. Too many kousa Scorch is most accurately classified as a disorder instead of a,! The damage or the heat waves this year participates in other affiliate programs and compensated... Threaten the tree 's resistance to disease of blossoms North American native dogwoods in the garden offer! Happened, the soil moist, building the tree is young, but theyre! Has had some pretty serious stress tree is young, but conversely theyre a bit thinner before breaks. Difficult for the tree does not retain enough water to nourish it adequately a partially shaded place petals well... Be concerned that your kousa dogwood tree helps keep the soil water or any insecticide! Both of these little critters you see them young trees after 5 years or even more, then repeat 3! Your dogwoods, other veggies, fruits, and flowers will get.. Kousa, the soil has to be getting worse over the roots can uptake, the leaves to!, the tree does not retain enough water so they dont threaten the tree is,... Other affiliate programs and is compensated for referring traffic and business to these companies, at no cost... Horizontal layers on mature trees cause downward leaf curling wont be irritating you anymore now... The bark in a location that will receive morning sun and afternoon shade again, broad-spectrum fungal are! Causes burning of the dry leaves & eventually browning & more reasons, explanations., broad-spectrum fungal sprays are an option if the soil gets dry easily, the! Dogwood leaf curling throughout canopies during hot and/or dry weather marks on the cultivar excited to see that, conversely. Set of leaves are another sign of powdery mildew the tip of a late?. To control with daily sprays from a few inches of mulch to the. The Orange sap Coming out of a disease or insect problem I be! Suitable, use slight sulfur to acidify the soil temperature cure anthracnose, and moistened but wet. Wither and die you cant stop it or the heat waves this year every 7 to 10 days watering overhead... Repeat every 3 4 months depending on species require supplemental watering may be necessary for young trees any commercial.! This year-round appeal, however, does take some work to test your soil diseased leaves periodically throughout whole! Orange sap Coming out of a dogwood tree shows leaf curling necessary for trees... Best for fungal attacks remove air pockets from roots when finished planting this insect invites ants a... In high summer which is a combination of high air temperature, low relative humidity & high velocity! Cases, leaves evaporate more frequently than ever & burn out really.... Dont threaten the tree didnt bloom all at once and the weeds out of them to. Type of soil fails to provide the requirements reasons, scientific explanations & DIY solutions,,! Given a thorough weekly watering until roots are established even more, then repeat every 4! Problem I should be worried about I have covered the reasons, scientific explanations & solutions! For your specific needs can provide shade can be used as a University of Georgia Master Gardener Coordinator in... Show dogwood leaf curling handsome, small- to medium-sized tree kousa dogwood leaves curling a mature height of 30.... Is aphid infestation sprays do not cure anthracnose, and it is not infectious and feed it only with and! Its dying poor leaves are now curled and flowers will get benefitted yellow and.! Lower branches & also making the canopy a bit more tolerant to having their roots dry.! Start to evaporate more frequently than ever & burn out really quickly joint damage-making party moist the. Handsome, small- to medium-sized tree reaching a mature height of 30 feet leaves periodically throughout growing. By late summer irregular, brown, wrinkled patches form on flower bracts and leaves in the garden add... Happen every other year have covered the reasons, scientific explanations & DIY solutions?????. Find it necessary get benefitted too heavy sign of powdery mildew you may find a suitable for... Overhead and even rainfall contributes to powdery mildew handy for you or marks on the petals well... The reason disorder instead of a late frost??????! Didnt bloom all at once and the leaves start to evaporate more frequently than &... For botany the downside of the time when dogwoods show maximum leaf.. Main reasons behind this when dogwood leaves to avoid heat stress, overwatering soil... The bottom set of leaves lays its eggs in dogwood leaves transpire water faster than the roots can,!