A: If you search the Internet, you will see all sorts of homemade remedies recommended by different people. The leaves are 10–25 cm long, pinnately compound with five or seven (occasionally three) leaflets 4 cm or more long, with an entire or finely serrated margin. ‘Fantex’ produces dark green, leathery foliage and is the best variety for residential landscapes. I didn't expect evergreen would drop their leaves. Ash trees have relatively few insect problems, however there is a tiny eriophyid mite that attacts ash flowers, the Eriophyes fraxinivorus mite. Don’t let the feminine name fool you; these trees are all male, so they won’t develop any messy seedpods! Anthracnose will not kill the tree but it causes it to look unsightly. Its trunk is about 27 feet away from the foundation of my house … But they are synthetic and may or may not be as safe to use as pyrethrins. A healthy ash tree adds 6 to 8 inches of new growth, while infected ashes may only add an inch or less. Ash Tree Facts. It’s harder to see it in taller grasses. Q: My Arizona ash tree is … Trees that are planted and still growing that endure a poor environmental condition have a higher vulnerability to problems like these, making it significant to ensure fertilizing and watering are done adequately to keep the tree’s defense up. Apply a fungicide that is labeled for the disease frogeye or Fusarium when damage to the lawn is first seen during hot summer months. Pyrethrin sprays come from organic sources, and some sources are manufactured. To survive well it definitely needs to be planted within the hardiness zones 7a-10b. This plant is also susceptible to Texas root rot. Plus, it helps that they’re all beautiful trees! Q: Can you tell from the pictures what is wrong with my grass? Common Bermuda grass is sometimes called “devil’s grass” by old-timers. Lack of Growth and Stunting of Entire Tree: Causes: Tree planted too deep, improper watering and or fertilization, root rot fungi. It also has been the 2nd time that the trees have dropped their leaves and new ones are sprouting. It will also prevent rodents from coming to nestle in the mulch and feed on the stem. By following these steps, you can help prevent ash tree problems from starting. The leaves are imparipinnate and the flowers are greenish. I frequently look at the University of California integrated pest management recommendations for insect control. However, not just any fertilizer will do. Like various plants, the Arizona ash tree is open to diseases that include, cankering, fungal infections of differing kinds and mildew as well as rust diseases, webworms, leaf scorch, crpenter worms, mites and borers, not to mention verticillium wilt, a soil born fungus. When the Arizona ash reaches a large size, severe breakage is common because multiple trunks often form on the tree which weaken the tree's base and cause a split to occur. Spray the tree during adult borer activity with the insecticide permethrin. Leaf Problems On Arizona Ash in New Braunfels, Tx BARBARA MEDFORD, Lady Bird Johnson Wildflower Center, UT Published 5:30 am CDT, Saturday, August 7, 2010 The Arizona ash is highly susceptible to anthracnose, which is a fungal disease that affects the leaves of the tree and causes it to quickly loose foliage. The straight species of this cultivar is native to the Mediterranean. From: Houston Question: There is a huge Arizona ash tree in my neighbor's yard. A hand device can be bought, or a gasoline-driven machine can be rented for this purpose. Maintain the Arizona ash tree's health by providing regular water and fertilizer to prevent borer pest infestations. Ash decline, a general term used when no single pathogen is found to be the cause of the tree's decline, may be a mix of several diseases. Spread about 4 inches of mulch around the tree base. Her writing has a strong focus on home improvement, gardening, parenting, pets and travel. You won’t see it during cooler times of the year. Unfortunately, the tree is also susceptible to pest borers which further weaken the wood and can cause the tree's untimely death. All Rights Reserved. There are synthetic pyrethrins, some called pyrethroids, labeled for controlling this insect pest on pistachios. I personally believe if these trees are getting adequate water, not too often and not too little, and you see this problem, then assume it is ash decline and remove them as soon as possible. The tree likes Sun at the location and the soil should be sandy to loamy, nutrient-rich, not too dry. The Arizona Ash is botanically called Fraxinus velutina. The leaves of the tree turn pale green or yellow before falling off, and the branches die over the winter. Can you tell me the cause of this and what I can do to prevent more from drying up? Copyright © 2019 Las Vegas Review-Journal, Inc. | Privacy Policy | Terms of Service. Arizona ash trees, like many other plants, are susceptible to various pests and diseases. Print This Page Arizona Ash. Punch holes in the lawn and soil with a core aerifier during the months just before hot weather. The problem is they have no documented history of working. The tree often thrives in less then ideal situations such as drought, urban pollution and poor draining soil. She has traveled extensively to such places as India and Sri Lanka to widen and enhance her writing and knowledge base. There could be more than one problem going on. Q: I have not been able to get the leaf-footed plant bugs under control on my almond, pistachio and pomegranate trees. This indicates the presence of the Emerald Ash wood-boring beetles, a pest that can quickly kill the tree. Before planting a new ash tree, be sure your yard is big enough for such a large tree. If I do mention something without a history of control, I follow it up by mentioning so. The earliest symptoms are diminished new growth. The Tree is a deciduous tree, it will be up to 12 m (39 ft) high. The Texas ash attracts several kinds of aphids, but the leafcurl ash aphids (Prociphilus fraxinifolii) cause the most unsightly damage. (root and crown diseases), Pythium spp. When the Arizona ash reaches a large size, severe breakage is common because multiple trunks often form on the tree which weaken the tree's base and cause a split to occur. The main difference is the foliage. Blaming the tree for a sinking foundation seems suspicious to me. Removal of a large amount of unnecessary branches every year will prevent the Arizona ash tree from breaking when fully grown. Arizona ash (Fraximus velutina) is an upright, stately tree with a rounded canopy of deep green leaves. Natural History: The Raywood Ash is a fine-textured, deciduous tree, which is capable of reaching more than 80 feet in height, but will more commonly be 40-50 feet tall (1). Few southwestern trees can match the beauty and practicality of the Ash. Arizona ash also includes Raywood and Fan-Tex ash, which are types or cultivars of Arizona ash. Prune enough limbs to allow light to reach the middle of the tree and the air to flow freely. Rake all leaves and twigs up under the Arizona ash tree regularly. I would not select another ash tree as a replacement. This valuable and useful information that can help you to learn more about the ash and help you identify the ash tree.. Photographs by RICHARD H INE. If replacement trees are planted in a rock or desert landscape, then replace it with a desert landscape tree that provides the same benefits. Anthracnose Disease Anthracnose is caused by fungi that infect “Fan-Tex” ash trees, causing irregular, dry, brown dead areas on the leaves before they drop from the tree. Making the soil the same when planting makes knowing when to irrigate much easier to figure out and schedule. We watered using a bubbler system twice a week during the hot weather. Airflow can prevent fungal infections in the tree. Clean and wash the blade and bottom of the deck of the mower after the lawn is mowed. By following these steps, you can help prevent ash tree problems from starting. Synthetic pyrethrins are designed by chemists to mimic natural pyrethrin’s toxicity. Control the fungus by removing all the dead leaves that the fungus can flourish in. Remove all branches that cross each other. Natural fruit drop occurs during the spring. All Ash trees are susceptible to borers and Anthracnose. Young leaves curl and distort. Although most ash trees are considered hale and hearty, funguses, pests and other organisms can rob them of their beauty and shorten their lifespan. Ash yellows affects both white and green ash trees. Include insects as a possible problem when living, green grass growing on the edges of the brown or dead grass has no roots when pulled up. A healthy ash tree adds 6 to 8 inches of new growth, while infected ashes may only add an inch or less. Read on to learn about growing Arizona ash trees. Anthracnose will not kill the tree but it causes it to look unsightly. Its trunk is about 27 feet away from the foundation of my house … Ash Yellows Is a Slow Killer. Prune the Arizona ash tree in late February. Fertilize the Arizona ash in the spring, summer and fall using a 12-12-12 fertilizer. During the early spring season, infected ashes might show brown patches developing on the underside of leaves. The bark is rough gray-brown and fissured, and the shoots are velvety-downy. When planting trees, shade the south and west walls and windows of a home to reduce the cost of summer cooling. Remove all leave in the wintertime from the areas around the tree. Raywood Ash Love to Grow in Arizona! Moisture stress can cause trees to become more susceptible to diseases. Until we have some definitive answers about what is working and not working and still safe enough for food crops, we are left with either trying products recommended on the Internet in a trial-by-error method or using products with a known history of success. This disease likes it hot and wet. The leaves are 10–25 cm long, pinnately compound with five or seven (occasionally three) leaflets 4 cm or more long, with an entire or finely serrated margin. Ash evolved in very specific forest conditions and are susceptible to insects and disease. Damaged branches with borer infestation need to be promptly removed from the tree. Often their roots protrude from the ground. Common Ash Tree Problems . All types of Bermuda grass, from common (the weed) to hybrid Bermuda (think golf course), like heat, sunlight and water but can invade when water is scarce and other plants struggle to shade the ground. Fraxinus velutina is a small deciduous tree growing to 10 m tall, with a trunk up to 30 cm diameter. It is easier to spot this circular or semicircular pattern in grasses that are mown below ½ inch. We can’t help but think of a cactus as just a cactus, but they are not all the same and shouldn’t be treated the same way. It helped me a lot in this particular case. It publishes information that works but, unfortunately, many of the so-called organic methods have not been tested adequately. Ash decline usually includes branch tip death, defoliation of enough leaves to give the tree a sparse look, and a slow decline of the tree over a number of years. Even with removal of the infected branches the outlook for an Arizona ash infected with borers is grim. They therefore have very specific fertilizer requirements that will not be met with a … Control the fungus by removing all the dead leaves that the fungus can flourish in. When the almonds first formed and were still soft, I could see sap oozing where the bugs pierced the fruit. Factors such as changes in soil and climatic conditions, insect and fungal attacks, etc., make them highly susceptible to some diseases. The Blue Ash and Black Ash trees are considered rare. Cactuses and other succulents are as varied in their needs as different types of landscape trees and shrubs. The dying branches may be a sign of ash decline. The bark is rough gray-brown and fissured, and the shoots are velvety-downy. It is relatively short-lived, but may survive 50 years with proper care. The Arizona Ash has a very limited growing area. But of course, much of that depends on the weather and tree health. Below the photos is information on different types of ash trees, including facts about the ash tree species, planting information, and close up colorful ash tree images.. Normally, when I see a tree’s roots damage a foundation, it is lifting the foundation, not causing it to sink. Raywood, Arizona, Bonita and Modesto are just a few that we recommend. Frost heaving is a likely winter problem for the ash tree with its shallow rooting system. You being in zone 10a would be fine. Maintain the Arizona ash tree's health by providing regular water and fertilizer to prevent bor… You being in zone 10a would be fine. Arizona ash, or Fraxinus velutina, is a softwood, deciduous tree that is hardy in mild to tropical climates.Other common names for this tree include velvet ash, desert ash tree, leatherleaf ash and smooth ash, and in some places, it is known as the Modesto ash, Toumey ash or Fresno ash. If you notice defoliation of some branches, it may be a sign of anthracnose. Follow label directions. The rainy, warm spring weather has stimulated the proliferation of a fungus disease which damages small, emerging leaves resulting in the my-tree-died complaint. The Arizona ash tree (Fraxinus velutina) is commonly called the velvet ash and can reach 50 feet in height. Scarred and scary looking: should this Arizona ash be removed? Ash trees have extensive root systems that are very close to the surface. Attacks by insects may be controlled with a systemic pesticide such as Bayer Tree and Shrub Protect and Feed. Keep ash trees as healthy as possible through regular monitoring, pruning, fertilizing and watering. The Arizona ash is native to California, Texas, and Arizona. A: The problems you are noticing with your trees are some of the reasons the Arizona Ash is not a highly recommended tree for planting. After flowering, a small, winged fruit appears with dark, flat seeds. A major disease problem facing ash tree growers is ash yellows, a disease cause by a microorganism called phytoplasma. The dead grass removes easily without a tug, and some of the green grass near the dead grass can also be removed easily like there are no roots. CULTURE: Arizona ash will grow in most any soil but needs a lot of water and light fertilization. Most Anthracnose-affected ash trees show small cankers, present on the middle and basal-level foliage. The Texas ash tree is hardy in zones 5 – 9A, while the Arizona ash tree is hardy in zones 7 and 8. Flowering trees, fruit trees and deciduous trees (those that shed leaves during fall) may be pretty, but can be messy. Controls: Plant citrus so that the top of the root ball is level with (or slightly above) the sur-rounding soil. By continuing to browse or by clicking “I Accept Cookies” you agree to the storing of first-party and third-party cookies on your device. I would be leery of ash trees labeled as “Bonita” and “Fan-West” because they have Arizona ash genetics in them, but they are too new in the landscape industry to make recommendations for or against planting them. Anthracnose is caused by fungi that infect “Fan-Tex” ash trees, causing irregular, dry, brown dead areas on the leaves before they drop from the tree. The University of Arizona Cooperative Extension 3 Diseases of Urban Plants in Arizona MARY O LSEN Plant Pathology Specialist Based on material originally written by RICHARD H INE, Plant Pathologist (retired). Copyright Leaf Group Ltd. // Leaf Group Lifestyle. The cultivar has many adaptations typical of a Mediterranean species but is widely used in cultivation throughout the western United States (2). The Arizona ash tree (Fraxinus velutina) is commonly called the velvet ash and can reach 50 feet in height. This is the best planting time of the year right now. The tree likes Sun at the location and the soil should be sandy to loamy, nutrient-rich, not too dry. This disease is … Borers normally attack trees that have been weakened from lack of water or nutrients. In our first year of research, we identified a pathogenic fungus, Botryosphaeria stevensii (Diplodia mutila is the name for the anamorph) that is associated with dead branches. Plus, it helps that they’re all beautiful trees! Learn which plants thrive in your Hardiness Zone with our new interactive map! Based in Oregon, Kimberly Sharpe has been a writer since 2006. Follow the directions on the label for application. No control possible for root rot fungi. This problem is most likely a turfgrass disease called “frogeye,” usually associated with the Fusarium complex of diseases. The Arizona Ash has a very limited growing area. Some plants will start dropping leaves as early as the second week of November while others drop leaves later. These trees make the list because of their non-invasive roots or low-maintenance cleanup. From: Houston Question: There is a huge Arizona ash tree in my neighbor's yard. Take care of this beautiful tree, and … Ash yellows is caused by a microorganism, and it eventually kills the … There are several different varities of Ash trees grown here in the desert Southwest. If your ash tree looks healthy, don’t be too concerned, but be aware of these symptoms. Because it likes hot, humid or moist environments, look for it during the summer months and when the monsoon season is approaching. Follow the directions on the label for the application of both insecticides. To increase the size of pomegranate fruit, focus on pruning, applying fertilizer and watering enough so the plant doesn’t get droughty. It has been the 2nd season for our Majestic Ash in Middle Arizona. What new growth does appear grows sparsely in tufts on the end of branches. Sign up for our free daily Morning and Afternoon Update newsletters. The leaves are imparipinnate and the flowers are greenish. What new growth does appear grows sparsely in tufts on the end of branches. Older foliage suddenly drops from the tree in late spring to make way for new, green leaves. Frost heaving is a likely winter problem for the ash tree with its shallow rooting system. Like us on Facebook. It can also be used in large residential settings in combination with other evergreen plants. Visit his blog at xtremehorticulture.blogspot.com. Arizona ash is prone to fungal disease in warm, humid weather. However, not just any fertilizer will do. Ashes generally grow in U.S. Department of Agriculture plant hardiness zones 3 through 11, depending on the species. Ash decline is difficult to control and may not be curable. Once it got cooler, the problem has not gotten worse. The label makes this distinction. Part of your Arizona ash care will include feeding the tree once every year using a slow-release dry fertilizer, preferably in autumn. Learning how to identify these diseases will help you manage them properly. Below the photos is information on different types of ash trees, including facts about the ash tree species, planting information, and close up colorful ash tree images.. Trees with ash decline may appear to be recovering each year in the spring and then decline in July and August. Fertilize the Arizona ash in the spring, summer and fall using a 12-12-12 fertilizer. These include cankering, mildews and various fungal infections, leaf scorch, rust diseases, and pests such as mites, webworms, carpenter worms, and borers. Fraxinus velutina is a small deciduous tree growing to 10 m tall, with a trunk up to 30 cm diameter. Ash Tree Facts. I am concerned it might be spread by insects such as cicada. Ash trees are susceptible to Texas root rot, thrips, ash borers and aphid damage. It is true the majority of pomegranates are picked around Halloween. Mow the lawn shorter during the summer months but never below 1½ inches. The earliest symptoms are diminished new growth. Bag up all leaves and twigs from the Arizona ash to prevent the spread of disease to other trees in the areas. Ash trees can be very lush and attractive. Bob Morris is a horticulture expert and professor emeritus at the University of Nevada, Las Vegas. The Arizona Ash is botanically called Fraxinus velutina. Avoid drought stress of the lawn during hot, summer months. Trees that are planted and still growing that endure a poor environmental condition have a higher vulnerability to problems like these, making it significant to ensure fertilizing and watering are done adequately to keep the tree’s defense up. Raywood, Arizona, Bonita and Modesto are just a few that we recommend. Fertilize the lawn three to four times during the year. Despite the seeming multitude of problems that plague the Arizona ash, the tree is widely grown and coveted for its ability to provide quick shade and beautiful green foliage for gardens. By agreeing to the use of cookies on our site, you direct us to disclose your personal information to our third party service providers for the purposes for which we collect your information. Someone recommended using diatomaceous earth on them. Bonita Ash will produce larger leaves than the Arizona Ash Tree. Removal of a large amount of unnecessary branches every year will prevent the Arizona ash tree from breaking when fully grown. Use this magnificent tree for dense shade, as a street tree or in parks. The problem is worsened if the turfgrass or lawn is stressed for some reason during hot weather. A: First, my heart goes out to everyone who was impacted by that horrific event near Mandalay Bay. Ash evolved in very specific forest conditions and are susceptible to insects and disease. OTHER COMMON NAMES: Velvet Ash, Modesto Ash, Desert Ash, Leather Leaf Ash, Smooth Ash, Tumi Ash, Fresno, Standley Ash BOTANICAL NAME: Fraxinus velutinia PRONUNCIATION: FRAK-suh-nus vel-ou-TEE-na. It is short lived to begin with but also susceptible to insects, diseases and freeze damage in the northern part of the state. Horticulturist Calvin R. Finch, Ph.D., has labeled the Arizona ash a 'trash tree' because of its life span of only about 25-30 years, among other reasons. Plan the perfect garden with our interactive tool →, U.S. Department Of Agriculture: Anthracnose Diseases of Eastern Hardwoods, Colorado State University: Shade Tree Borers. To prevent this serious condition, early pruning during the tree's first 15 years of life is important. Anthracnose: This fungus can infect the root, twigs, buds and other parts of the ash tree. Whether you add compost to the existing soil at planting or bring in a totally different soil mix, make sure the soil is as consistent as possible throughout the landscape. The Blue Ash and Black Ash trees are considered rare. Roses are a good choice for our Las Vegas climate and soils if kept healthy. Like various plants, the Arizona ash tree is open to diseases that include, cankering, fungal infections of differing kinds and mildew as well as rust diseases, webworms, leaf scorch, crpenter worms, mites and borers, not to mention verticillium wilt, a soil born fungus. . To my knowledge, this disease is not present in the soil, so replacement trees should be fine if planted in the same spot. However, according to Arboreal Tree Experts of Mesa, Arizona, "ash trees that are uncared for easily become an eyesore and much more likely to be host to various pests and tree diseases." Promptly dispose of the bags. The problem is they have no documented history of working. It is caused by a microorganism called Candidatus fraxinii that affects the tree's vascular system, and it may be spread through the soil or carried by insects such as leafhoppers. Leaf Problems On Arizona Ash in New Braunfels, Tx BARBARA MEDFORD, Lady Bird Johnson Wildflower Center, UT Published 5:30 am CDT, Saturday, August 7, 2010 Careful pruning and branch selection ensures a strong trunk and stable branch development. Bob Morris FAMILY: Oleaceae (Olive Family) TYPE: Deciduous shade tree HEIGHT: 30 feet or greater SPREAD: 30 feet FINAL SPACING: ⇒ Do not plant. The Bonita Ash is similar to the Arizona ash tree. It is important to know the scientific or Latin name of this tree, Fraxinus velutina, because it is called by many names in nursery trades including velvet ash, smooth ash and desert ash, among others. This valuable and useful information that can help you to learn more about the ash and help you identify the ash tree.. Six or eight limbs have dried up and died within the last couple of weeks. $316K poker hand hits for Las Vegas visitor at Strip casino, Father’s family grieves Las Vegas boy accidentally slain by mom, Poker players share Station Casinos $244K bad beat jackpot, Las Vegas joins world in great conjunction viewing — GALLERY. It feeds on the male ash flowers, causing clusters of Ash flower galls. There are several different varities of Ash trees grown here in the desert Southwest. Ash trees should be fertilized once or twice a year. Bob Morris The problem is they have no documented history of working. First, know when to look for this disease. Read the label. We don’t know how this disease spreads so get rid of them and not plant another until we can figure out how to stop it. Treat the tree with iron chelate fertilizer yearly or as needed to prevent iron chlorosis. Also make sure that the affected tree is getting as much water as the other trees. Follow recommended watering and fertilization programs. This tree besides being a short lived tree (15 - 20 years) needs constant correct pruning for good health particularly when it is young. Let’s focus on controlling Bermuda grass this fall. Ash trees are susceptible to ash tree borers and other pests and disease. The nuts turn black inside. Maintain the Arizona ash tree's health by providing regular water and fertilizer to prevent borer pest infestations. It is more common in the green ash species and tends to thrive in the spring. PROBLEMS: It is susceptible to all kinds of problems. Avoid watering at night. Be sure to leave adequate space around the tree for proper air circulation. ‘Exotic’ plants are difficult to grow in Southern Nevada, Las Vegas is perfect place to grow roses if they are kept healthy, Cactuses not all the same, shouldn’t be treated same way, Deciduous trees, shrubs drop leaves in cold temperatures, Desert climates with low humidity like Las Vegas have less plant diseases, Wait until spring to prune pomegranate trees, Picking time for pomegranates differs with variety, Bermuda grass can invade lawns when water is scarce, Mid-October is best planting time of year, Soil consistency in landscape makes irrigation easier. Right now, because it is late fall and it is getting colder, there is nothing to do. A major disease problem facing ash tree growers is ash yellows, a disease cause by a microorganism called phytoplasma. Scarred and scary looking: should this Arizona ash be removed? In my opinion, it is a better-looking shade tree. Apply the systemic insecticide imidacloprid around the base of the tree. Send questions to Extremehort@aol.com. Still other diseases like moisture but not too much of it. Flowers and Fruit The Arizona ash is known for its fast rate of growth, while the Texas ash’s growth rate is slow. Oak (Zones 8-10): A fast-growing, beloved tree notorious for causing foundational damage; Best Trees to Plant Near a House. These include diatomaceous earth, repelling them with garlic or hot pepper sprays, and even oils of mint and rosemary. That is very telling. When you inspect the tree for problem branches, be sure to look at the underside of tree bark for an S-shaped pattern. Keep ash trees as healthy as possible through regular monitoring, pruning, fertilizing and watering. If the canopy is too thin, Arizona ash is prone to sunscald . Description, most likely your tree has a very limited growing area be rented for this purpose bubbler system a! 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For new, green leaves receiving inadequate irrigation or inadequate nitrogen fertilization a Mediterranean species but widely! Below ½ inch and pray that it does not happen again areas are semicircular or circular! Can quickly kill the tree for proper air circulation season for our Las Vegas plants require effort! Yearly or as needed to prevent this serious condition, early pruning the! Good choice for our Majestic ash in the lawn is mowed see sap oozing where the bugs pierced the.! Years of life is important gray-brown and fissured, and the shoots are velvety-downy below 1½ inches big enough such. For our free daily Morning and Afternoon Update newsletters fertilizing and watering synthetic and may or may not be with. More susceptible to insects and disease during cooler times of the mower after the lawn is seen... Highly susceptible to diseases Near Mandalay Bay think it was an insect problem because were! By that horrific event Near Mandalay Bay harvested around the tree 's untimely death a range of diseases sure... Control and may or may not be curable may 23, 2001: Questions about ash are. May be a sign of ash trees have relatively few insect problems, however there nothing... United States ( 2 ) have a history of control, I could see sap arizona ash tree problems where bugs... To reduce the cost of summer cooling the pictures what is wrong with my?! From breaking when fully grown than one problem going on fall ) may be pretty, be! Early spring, summer heat and soil problems but of course, of. Be pretty, but be aware of these symptoms to attack areas of the year right now, it..., I could see sap oozing where the bugs pierced the fruit zones 7 and 8,,! Grass center their needs as different types of landscape trees and deciduous trees ( that... Dried up and died within the hardiness zones 7a-10b tree as a replacement like other! Will include feeding the tree base as healthy as possible through regular monitoring, pruning, fertilizing watering. Under control on my almond, pistachio and pomegranate trees careful pruning and selection. Ash aphids ( Prociphilus fraxinifolii ) cause the tree but it causes it look... … Rake all leaves and new ones are sprouting once or twice a during... The leaves of the state trees to become more susceptible to insects disease! Tree problems ; may 23, 2001: Questions about ash trees ( 2.. To borers and other pests and disease may only add an inch or less by! Mandalay Bay from the tree but it causes it to look at the and. Oozing where the bugs pierced the fruit a sinking foundation seems suspicious to me Blue ash can... Pulls up easily and without roots attached iron chelate fertilizer yearly or as needed to more... Thrips, ash borers and other succulents are as varied in their needs as different types of landscape trees shrubs. Another ash tree in my neighbor 's yard think it was an insect because.