The purple robe locust tree is a medium-sized tree, growing to heights between 30 and 50 feet and widths between 25 and 30 feet at maturity. The tree bark is highly furrowed and dark grey, almost black. Purple-robe locust is considered an easy-to-grow tree, perhaps too much so at times, as the trees send out underground root suckers that can be a maintenance problem or disrupt nearby gardening areas. Plus, it can handle urban stressors like pollution and road salt. This Purple Robe Locust is resistant to drought once it is established. Theres a chance this may irritate your neighbors, so you might want to have a chat with them before planting! It is, however, susceptible to several insect infestations, such as locust borer. As a result, this tree is often a pest and considered invasive in some areas. This deciduous tree is native to North America and can be found in parts of Canada and the United States. Pest : Scale Insects Scales are insects, related to mealy bugs, that can be a problem on a wide variety of plants - indoor and outdoor. When it reaches maturity, it takes on an erect, irregular oval shape. Here are four simple steps to planting a thornless honeylocust tree. The fragrant blossoms of the tree are particularly attractive to bees and butterflies. Common names: Locust Tree Fruit Characteristics. You are ready to begin filling in with soil. The oval pinnately compound leaves turn yellow in fall. Your support is vital to the Arboretum, where the power of trees makes a positive impact on peoples lives. Possible disease problems include canker, powdery mildew, leaf spots, wood rots and verticillium wilt. If a plant is infested with whiteflies, you will see a cloud of fleeing insects when the plant is disturbed. As the tree grows, many people will prune them up to about 7 or 8 ft above ground. black locust, common locust. The wood is weak and brittle making it subject to storm damage. While preferring full sun, the tree can grow in partial shade. They appear as bumps, often on the lower sides of leaves. An easy-care, fast-growing specimen in lawns. A cultivar of the native black locust, it is also known as the Purple Robe Black Locust. Create a water ring around the outer edge of the hole. The beautiful Purple Robe Black Locust tree. Jessica Allen likes to share helpful information with current and aspiring homeowners. They are known to spread rapidly and can often take over an area if left unchecked. The tree may grow in the partial shade even though it prefers full sun. Fungi : Powdery Mildew Powdery Mildew is usually found on plants that do not have enough air circulation or adequate light. Not Available Online in Your Area. Posts: 2. posted 7 years ago. They also produce a sweet substance called honeydew (coveted by ants) which can lead to an unattractive black surface fungal growth called sooty mold. 2. It is advertised as thornless, but plants with thorns are found in commerce. Leaves are alternate and pinnately compound. When I talked about planting it, I got lots of folks trying to talk me out of it - for good reason! Learn all about how to grow flowering trees in The Growing Guide. Almost any soil condition will do, including clay, sand or loam that is acidic to alkaline, with a preference for a pH ranging from about 6.8 to 7.7 and an organically rich loam. In the spring, usually in May through early June, the purple robe locust tree produces fragrant pinkish-purple flowers on hanging racemes that may be up to 8 inches in length. For one, its seeds and seed pods are consumed by livestock and other animals like squirrels, deer, and rabbits. If container-grown, lay the tree on its side and remove the container. Purple Robe Locust (Robinia sp) is a gorgeous nitrogen fixing tree. Invasive roots The roots of purple robe locust trees can be very invasive, causing damage to sidewalks, driveways, and foundation walls. There are plenty of reasons why the thornless honeylocust is such a frequently planted tree! The Purple Robe Locust is a sturdy, quickly growing shade tree with strands of deep pink flowers in the spring that are both intensely fragrant and incredibly gorgeous. The flowers on this tree are deep rosy-purple. Ultimately, it is up to you to decide what type of posts will best support your porch, Read More 4X4 Or 6X6 Posts for Porch RoofContinue, The size of a succulent is determined by its pot size and the amount of sunlight it receives. I would recommend good TLC and avoid any pruning, injury and be sure to water . Never amend with less than half original soil. 5/30/15-Consumer Horticulture Specialist David Hillock discusses the Purple Robe Black Locust Tree. If there is a need for treatment, apply a pesticide that is indicated for these pests, such as Dursban, Permethrin, or Talstar, or an insecticidal oil, and follow the instructions on the label for the appropriate dosage. Consult your local garden center professional or Cooperative Extension office in your county for a legal recommendation regarding their control. Beekeepers take note! Set the tree into the hole you dug in Step 1. For fungal leaf spots, use a recommended fungicide according to label directions. Caliper. The Garden wouldn't be the Garden without our Members, Donors and Volunteers. Youll often see thornless honeylocusts near parking areas and streets for this reason. Robinia pseudoacacia 'Purple Robe' is commonly known as the purple-robe locust due to its fragrant wisteria-like purple blossoms that appear in the spring. Follow up by filling the rest of the hole with soil and firming the soil to eliminate any air pockets. Purple-robe locust is a member of the black locust family with wood known for its usefulness as firewood. Still, grass and other plants can easily grow underneath a thornless honeylocust. Then you can essentially leave the tree alone to grow for the next couple of years before doing any pruning. Late Blight Disease on Home Garden Tomatoes, Potatoes, How to Grow Good Tomatoes in the Garden and Greenhouse. How to Use Purple Robe Locust in the Landscape. Black cherry tomatoes are a delicious and, Read More Black Cherry Tomatoes When to PickContinue, Your email address will not be published. Tolerates a wide range of soils including sandy or nearly barren ones. The seeds of the tree are found inside pods that are 3 to 4 inches long. However, this tree can also be quite problematic for homeowners. New growth is reddish-bronze. In the spring, clip the blossoms to make lovely bouquets. Each zone corresponds to the minimum winter temperatures experienced in a given area. New foliage emerges crinkled and distorted. The trees bark is furrowed and so dark a gray that it looks almost black. The leaves are pinnately compound with 9-19 leaflets. It is capable of growing in conditions that are unfavorable to the majority of other plant and animal species. In some areas, its not recommended to plant thornless honeylocusts because they contribute to a lack of species diversity. Spreads by root suckers. They can cause quite a mess and spread over a large area. Does a Eucalyptus Tree Turn Brown in the Winter. Other insect problems include caterpillars, weevils, scale and whiteflies. An excellent barrier plant to protect your property beautifully. New growth is bronzy red. Young trees can be transplanted in a . It adapts well to all sorts of soil. This tree species makes a gorgeous addition to natures fall colors. Genus name honors Jean Robin (1550-1629), of Paris, gardener to Henri IV and Louis XIII of France, who received new plants from Canada. These trees are drought-tolerant with a narrow shape that makes them suitable along streets or in parking lot islands or other narrow spaces. Robinia 'Purple Robe' is a flowering, deciduous tree with a semi - open habit of growth. Theyre hardy and adaptable, and they arent too picky about the environment they grow in. This tree is a genuinely distinctive shade tree that has recently gained popularity. They are also good for producing firewood, because the density of the wood allows it to burn for a long time. They can live for over a hundred years. Fixes nitrogen. Prune purple locusts in the fall or winter when the tree is dormant, advises the University of Utah, as spring pruning will cause the tree's sap to bleed. The only downside to the locust tree is that it can be quite messy, as the leaves and seeds fall off readily in autumn. Another disadvantage is that the branches of this tree are brittle and can break easily in strong winds or storms. This may be done at the nursery before you buy the plant or you may have to prune at the time of planting. The term "locust" can apply to several different species of trees with legume-like seed pods. A female adult can lay several hundred eggs inside the leaf which hatch and give rise to miners. The purple robe locust is also sometimes called the black locust because of the dark color of its heartwood. Young scales crawl until they find a good feeding site. I spotted the object of my desire over the fence in a yard of one of the houses near the creekside walkway. in American Studies from Columbia University and lives in Queens with her two cats. She holds a B.A. Yes, you are correct. The purple robe tree is considered invasive because its roots and seeds grow so vigorously. Some experts say that it decreases species diversity. The species is native to the area that includes Pennsylvania, Nebraska, and Texas. Bonnie Singleton has been writing professionally since 1996. Select a tag below to view all the items that have that particular trait. The Purple Robe Locust, robinia pseudoacacia, is a stunning ornamental that is known for developing, in the spring, swathes of gorgeous pink-purple flowers that resemble wisteria. The honey that is made from black locust trees, known as acacia honey, is highly prized. Pesticides like Dursban, Permethrin, and Talstar, as well as insecticidal oils, are mostly used to effectively get rid of these insects; just be sure to read the labels carefully and use the recommended amount. If you have a locust tree on your property, it is important to keep an eye on its roots and make sure they are not causing any damage. Locust borer is a serious pest of black locust. Purple Robe Locust is a deciduous tree with a more or less rounded form. Allergies Some people are allergic to the pollen produced by purple robe locust trees, which can cause respiratory problems and other symptoms. These days there are seemingly endless ways to brew a cup of coffee in the morning. It grows quickly and produces fragrant flowers in the springtime. Tolerates some light shade, but avoid shady locations. Purple Robe Locust Tree Pros And Cons. Location. The purple robe tree is a species that is recognized as invasive due to the quick spread of both its roots and seeds. Purple Robe Black Locusts make great street trees, too, handling the tough conditions by your road with ease. It can be used as a hedge or specimen plant in the landscape. This little flowering tree is an excellent addition to a Japanese garden or a cottage garden. It develops into an upright, uneven oval shape as it matures. Once well-established, the Purple Robe Locust tree has excellent drought resistance and is simple to cultivate. Purple Robe Locust (Robinia sp) is a gorgeous nitrogen fixing tree. However, Canker is easily prevented with proper care and maintenance. It has beautiful yellow leaves in autumn. Use a pitchfork or shovel to scarify the sides of the hole. According to North Carolina State Extension, these pests emerge in the spring and begin munching on the plant's lower leaf surfaces. You'll find answers to many questions on our FAQ page. Locust wood is a type of tree that grows naturally in the US, Europe, and China. The purple robe locust tree mostly grows to a height of up to 50 feet and a width of up to 25 feet when it reaches its full maturity. It grows in conditions that are not good for most other plants and animals. This tree is tolerant of urban pollution and prefers full sun to partial shade. The purple locust tree is a member of the legume family, which means that it can fix soil nitrogen, which allows it to survive in sandy soils. These medium-sized shade trees grow to approximately 30-50 ft. tall and 30-40 ft. wide. They can be highly destructive and are characterized as leaf feeders, stem borers, leaf rollers, cutworms and tent-formers. They bear attractive flowers but many have spines, bristles or thorns. Super hardy and drought tolerant with a brisk growth rate of 2 feet in one year. To learn more about this and many o. This cultivar has yellow foliage and grows 40 feet high by 25 feet wide. Suggested Use: Street Tree, Flowering Tree, Naturalize. Use as a screen or hedge, plant as a specimen, in a border, or in small groups. 12. Thornless honeylocust trees are tolerant to various stressors like pollution, salt, and drought. It has lovely, dark rose-pink flowers. If planting a balled and burlaped tree, position it in hole so that the best side faces forward. Black locusts have invasive traits that enable them to spread aggressively. However, as you may have guessed from its name, the thornless honeylocust does not have any thorns. It was magnificent. These fragrant clusters grow up to eight inches in length, covering the tree in its beauty. Purple Robe Locust - The Purple Robe locust can be identified by its rose-like flowers and purple-red leaves, which . The native species of honeylocust has thorns. Healthy trees usually don't need pruning, but if it becomes necessary, avoid pruning in spring when wood tends to bleed. It is short-lived and prone to borer injury. Each leaf is divided into anywhere from nine to 17 leaflets that are 1 or 2 inches long and arranged in pairs. In commerce, it is synonymous with and frequently sold as R. pseudoacacia Purple Robe. Hiring an exterminator to get rid of termites can be quite expensive, but Get free, zero-commitment quotes from pro contractors near you. The purple robe locust tree grows to a height of 20-30 feet and has a spread of 15-25 feet. This tree gets BIG quickly, and suckers wherever you damage the roots. Thornless honeylocusts benefit other types of wildlife, such as deer, rabbits, and bees. Once well established, the Purple Robe Locust tree has good drought tolerance and is easy to grow. Here are some of the most common problems associated with purple robe locust trees: 1. 1. The thornless honeylocust is a great tree to plant on hillsides. The pinnate compound leaves of the purple robe tree can be a foot long, give or take a few inches. Prevention and Control: keep weeds down, scout individual plants and remove caterpillars, apply labeled insecticides such as soaps and oils, take advantage of natural enemies such as parasitic wasps in the garden and use Bacillus thuringiensis (biological warfare) for some caterpillar species. Purple Robe Locust has chains of fragrant rose pea-like flowers with yellow eyes hanging below the branches in late spring. Your email address will not be published. * Flat-Rate Shipping applies to standard orders shipping to the 48 lower contiguous states. The new foliage emerges tinged with purple and matures to a bronze-green color. The purple robe locust mostly thrives in USDA plant hardiness zones 48. The thornless honeylocust is tolerant to many different stressors. This tree is often used as an ornamental plant due to its attractive flowers and graceful form. They gradually grow to a dark green hue and turn yellow in autumn. Mow the grass right up to the trunk to keep the plant as a single stem. They are characterized by their white bark and black streaks. U.S. Department of Agriculture hardiness zones 4 through 8 are suitable for the purple robe locust. Purple locust trees are not picky when it comes to soil, which makes them appealing for sites where other trees cannot grow. The tree falls under the "medium" size category. However, some consider the plant to be a cross between R. pseudoacacia and R. hispida. According to the American Society for the Prevention of Cruelty to Animals (ASPCA), honey locust and carob trees are safe for canine consumption, however black locust and other species of Robinia are considered to be hazardous. This means that the soil should hit the tree at the same point as it did in the container. Pest : Whiteflies Whiteflies are small, winged insects that look like tiny moths, which attack many types of plants. Prevention and Control: Plant resistant varieties and space plants properly so they receive adequate light and air circulation. 5. If control is needed, use an insecticide labeled for these pests, including Dursban, Lindane and Talstar, or an insecticidal oil, following label measurements. The best way to tell if a tomato is ripe is to gently squeeze it. The purple robe locust tree has the potential to grow up to 50 feet tall and up to 25 feet wide when fully grown. This is paramount for roses. The emerging leaves are metallic red. The Purple Robe Locust, robinia pseudoacacia, is a stunning ornamental that is known for developing, in the spring, swathes of gorgeous pink-purple flowers that resemble wisteria. Violet purple spring flowers make this an interesting tree for the landscape. It has bluish-green deciduous foliage which emerges burgundy in spring. Young trees should be pruned in the fall or winter to strengthen the structure of the tree and to develop its desired shape. Purple-robe locust trees grow at a fast rate of 2 to 3 feet per year, reaching a mature height of 40 to 50 feet, with a spread of up to 30 feet. Isolate infested plants away from those that are not infested. How-to : Planting a Tree Dig out an area for the tree that is about 3 or 4 times the diameter of the container or rootball and the same depth as the container or rootball. Make sure that your hardiness zone lies within the zone compatibility range of this variety before ordering. But did you know, Read More How Big Can a Succulent GetContinue, Black cherry tomatoes are ready to pick when they are deep red in color and have a slightly soft texture. Form: Upright rounded to vase shape. But if theyve started to form around the root ball or pot, its best to loosen them a bit. While they are not typically considered a threat to buildings or pavement, their roots can cause problems for sewer and water lines. Not only is the thornless honeylocust a beautiful addition to your landscaping, its also good for other wildlife. With a lifelong passion for writing plus strong enthusiasm for home improvement and DIY projects, joining the team at Upgraded Home was an easy choice. It is reportedly a hybrid cross between R. ambigua Decaisneana and R. hispida Monument. Are you considering planting a thornless honeylocust tree? In Illinois, it is native only to the far southern edge of the state. The Pros: The Purple Robe Locust Tree is a beautiful tree that can provide shade and beauty to your yard. Make a wonderful street tree that survives harsh conditions. We will send you a free one-time replacement. Twisty Baby black locust (Robinia pseudoacacia 'Lace Lady'): At 20 feet high by 20 feet wide, this tree is smaller in size and has contorted limbs. If the tree seedling does not have branches, allow it to grow to the desired height of branching then pinch it back to stimulate the lower buds to form branches. They prefer full sun and can grow to 30-70 feet tall with a 30-70 foot spread. Thornless honeylocusts require very little pruning and can mostly be left to their own devices as they mature. The streaks are caused by a fungus called Phellinus pini, which colonizes the trees outer bark. Therefore, they recommend that thornless honeylocust trees arent planted unless other alternatives have first been considered. It also serves as the ideal firewood because it burns slowly at a high temperature. This tree gets its common name from the large, showy clusters of lilac-colored flowers that bloom on its branches in early summer. http://www.tytyga.com/Purple-Robe-Loc. 0. The term "Purple Robe" poses some pest concerns, some of which are significant while others are insignificant. The purple robe locust tree can grow up to 50 feet tall and has dark green leaves that turn yellow in the fall. These thorns can reach up to 2 inches in length and are quite sharp, making them dangerous if youre not careful around them. Each leaf is composed of 9 to 17 leaflets that are either one or two inches long and grouped in pairs. Landscape Attributes. Your email address will not be published. Not only will this conseve water, but will direct moisture to perimeter roots, encouraging outer growth. A couple of the cons of thornless honeylocusts are their messy fruit pods and potential insect issues. Price. Ensure that the soil line remains the same. It is also planted for erosion control and as a nitrogen-fixing agent for improving soil quality. . For instance, in the blooming stage, you will find bright green leaves with a tinge of purple. Some of the more popular varieties include the echeveria, sempervivum, and sedum. Thornless honeylocust is a widely-used shade tree that grows in a round or slightly oval shape. Head back the plant to compensate for this loss and to promote branching. The purple robe locust tree blooms in the spring with clusters of white flowers that have a sweet fragrance. Review of the risks should be undertaken before selecting these trees. However, purple locusts will not tolerate "wet feet" and therefore require good drainage. Moderately fast growing, compact, rounded, deciduous tree with spiny shoots. A growing legacy since 1816. When the pinnate leaves first appear in the spring, they are bronze-red; during the summer, they turn blue-green; and ultimately, in the fall, they turn yellow. Flowers are followed by smooth, flat, purple-brown seed pods (to 4 long). More recently, its wood has been favored for fence posts. In the fall, these pods detach from the tree and can make quite a mess. 4. Aphids, whiteflies, worms, and scale insects can all pose a threat to this tree, but they are usually less problematic. Grow in average, dry to medium, well-drained soils in full sun. 24 in. Here's a list that our experts recommend for this variety. Leaves will often turn yellow or brown, curl up, and drop off. Expert Response. The purple robe locust tree is a species of flowering tree in the pea family. Pest : Leaf Miners Leaf Miner is actually a term that applies to various larvae (of moths, beetles, and flies) that tunnel between upper and lower leaf surfaces, leaving a distinctive, squiggly pattern. Pinnate bronze-green leaves, with each leaf having up to 23 lance-shaped to ovate leaflets, are attractive during the growing season. Wikipedia . Purple robe black locust (Robinia pseudoacacia 'Purple Robe'): The flowers on this tree are deep rosy-purple. Larger trees often come in wire baskets. Purple Robe Locust Tree Pros and Cons, Zone, Seed, Diseases, Patulous Esophagus Definition, Symptoms, Causes, Treatment, Pelvocaliectasis Meaning, Symptoms, Causes, Treatment. The purple locust tree can become infected with locust borers, which are black beetles with yellow markings that create tunnels inside the trunks and branches of the tree, weakening it. The 8 inch fragrant clusters cover the tree profusely! Meanwhile, the locust comes from the rattling sound that the trees dried fruit pods sometimes make. The Arboretum has the expertise and advice to help you beautify your home landscape, improve your community, and advocate for trees. Fragrant wisteria-like violet purple flowers in pendant racemes (to 8 long) bloom in mid to late spring. And finally, the seed pods stay on the branches through the winter. This fast-growing native tree can form colonies and has brittle wood. Pest : Caterpillars Caterpillars are the immature form of moths and butterflies. They are fast growing, gaining two to three feet per year, and reach a medium tree height of thirty to forty feet. The most potentially serious problems include locust borers and locust leaf miners and can lead to defoliation and seriously stressed trees. Therefore you do not generally have to prune them unless there is some root injury or limb damage in the planting process. Hear from Jill Koski, President and CEO, why more equitable Illinois urban forests help everyone. While these trees have demonstrated invasive traits, there is insufficient supporting research to declare them so pervasive that they cannot be recommended for any planting sites. Before you do so, youll definitely want to take a look at all the pros and cons below! We also share information about your use of our site with our social media, advertising and analytics partners. It is vulnerable to the attack of the locust borer as well as other kinds of insect pests. One disadvantage is that the roots of these trees can be aggressive and damage sidewalks or driveways. The leaves are bluish-green with very little color change in the fall. 3. Good drought tolerance. I think that Black Locust is a great tree. While they come in a wide range of colors and shapes, they all, Read More Types of Succulents That Grow TallContinue, There is no definitive answer to this question as it depends on a number of factors, such as the size and weight of the porch roof, the climate and weather conditions in your area, and your personal preferences. Purple-robe trees don't do well in soil that is poorly drained or permanently wet.
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