The fragrant blossoms of the tree are particularly attractive to bees and butterflies. 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. Purple Robe Locust ( Robinia pseudoacacia) This black locust cultivar likely reaches a height of 40 feet and a spread of 20 to 35 feet. The stem may also start to soften and collapse. Its just that simple. The growth rate of a purple-robe locust tree is between 2 and 3 feet each year, and it can reach a full height of 40 to 50 feet, with a width of approximately 30 feet. The pinnate leaves emerge in the spring as a bronze-red, turning to blue-green during summer and yellow in the fall. Do not remove shoots from the trunk early on as these allow the tree to grow more rapidly and also shade the tender young trunk from sun-scald. The seeds of the tree are found inside pods that are 3 to 4 inches long. Though a popular street tree, it really should not be used close to power lines where mature, hard wood has to be pruned in order to keep a nice form. The flowers are pink or white and bloom in early summer. Dark green leaves are pinnate to 10 inches in length, with up to 15 ovate leaflets. They can thrive in areas of poor soil or poor air quality where other trees may not be able to grow, including urban environments. Deciduous trees like maples (those that loose their leaves in the fall) can be dug up and sold with their bare roots exposed. The sweet-smelling flowers, which last for a 10-day period in late spring, are followed by 4-inch leathery purple-brown seed pods that persist on trees all winter, reports Washington State University. If you need further assistance, we're always eager to help. Purple Robe Locust has chains of fragrant rose pea-like flowers with yellow eyes hanging below the branches in late spring. Belonging to the family of Black Locusts, this is one of the prettiest locust trees. It can contribute to erosion control while also stabilizing poor soil. Robinia 'Purple Robe' is a flowering, deciduous tree with a semi - open habit of growth. Purple Robe Locust Tree Growth Rate, Problems, Care As long as a tree service sprays your thornless honeylocust a few times each year, you shouldnt have a problem. Purple Robe Black Locusts make great street trees, too, handling the tough conditions by your road with ease. The 8 inch fragrant clusters cover the tree profusely! Thornless honeylocusts grow very quickly. When the leaves of purple robe trees first come out in the spring, they have a reddish-purple color. The blossoms of this Purple Robe Locust Tree, similar to the flowers of the Black Locust Tree, are nutritious, so, it is advised to cook them and consume them fresh. Because they can become invasive, the suckers of the purple locust tree should be removed as soon as they appear. The purple robe locust tree is grown as an ornamental plant for its attractive flowers and foliage. In general, thornless honeylocusts are low-maintenance and easy to care for. This makes the locust tree an excellent choice for fence posts, firewood, or any other type of construction where strength and durability are important. Locust Tree With Purple Blooms | Home Guides | SF Gate 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. Add two to four inches of organic mulch on top of the soil. Also, black locust tends to seed itself a little too generously. Purple Robe Locust trees are very hard wooded and will tolerate storms well. The roots and seeds of the purple robe tree spread so aggressively that it is considered invasive. I would recommend good TLC and avoid any pruning, injury and be sure to water . Meanwhile, the locust comes from the rattling sound that the trees dried fruit pods sometimes make. Because most of the root system is lost in digging, sufficient top growth should be removed to compensate for this loss. 8. Each cluster can be up to 8 inches long. Due to the rapid growth of its roots and seeds, the purple robe tree is called invasive. Thornless honeylocust is a widely-used shade tree that grows in a round or slightly oval shape. This fast-growing native tree can form colonies and has brittle wood. 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. Healthy trees usually don't need pruning, but if it becomes necessary, avoid pruning in spring when wood tends to bleed. It grows quickly and produces fragrant flowers in the springtime. Trees send out underground root suckers that not only become a maintenance problem but also can disrupt nearby gardening areas. Branches breaking The branches of purple robe locust trees are known to break easily, which can cause damage to property and be a safety hazard. Black locust (Not recommended) | The Morton Arboretum Hear from Jill Koski, President and CEO, why more equitable Illinois urban forests help everyone. Jessica Allen likes to share helpful information with current and aspiring homeowners. This tree is a truly unique shade tree that is recently grown in popularity. They eventually mature to a dark green and turn yellow in the fall. This was mostly done for conifers and broadleaf evergreens, but has become common for deciduous trees as well. The fragrant, creamy white flowers appear in hanging clusters in late May. Therefore you do not generally have to prune them unless there is some root injury or limb damage in the planting process. Scales can weaken a plant leading to yellow foliage and leaf drop. Flowers are followed by smooth, flat, purple-brown seed pods (to 4 long). Common names: Possible controls: keep weeds down; use screening in windows to keep them out; remove infested plants away from non-infested plants; use a reflective mulch (aluminum foil) under plants (this repels whiteflies); trap with yellow sticky cards, apply labeled pesticides; encourage natural enemies such as parasitic wasps in the garden; and sometimes a good steady shower of water will wash them off the plant. If youre ever pruning this tree or working around it in any way, be sure to wear gloves and long sleeves to protect your skin from these sharp thorns! Use as a screen or hedge, plant as a specimen, in a border, or in small groups. A female adult can lay several hundred eggs inside the leaf which hatch and give rise to miners. When I talked about planting it, I got lots of folks trying to talk me out of it - for good reason! This tree species can grow more than two feet in a single year! Locust Tree Fruit Characteristics. It is important to remove any undesirable root suckers as soon as possible to prevent them from becoming invasive.
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