The fruit is not ornamentally significant. It forms an oval-upright canopy. Each spring, the leaves emerge reddish bronze, before maturing to dark blue-green. Purple Robe Locust has chains of fragrant rose pea-like flowers with yellow eyes hanging below the branches in late spring. 'Tortuosa', a small tree with curved and distorted branches. These trees grow fast, up to 25' high by 20' wide. Could also be I watered it too much considering the cool weather. I noticed some of you writing about a purple robe locust (robinia ambigua) tree. Both are fast-growing and bloom once a year. Purple Robe Black Locust - Robinia pseudoacacia 'Purple Robe' Early summer brings lots of long, pendulous clusters of very fragrant purplish pink flowers. Hi tree people, I cut down my Purple Robe locust tree because it was sending root suckers into my neighbor's lawn, across my garden, and into my vegetable beds, as well as dropping yellow leaves into my pond all summer and rarely flowering. In fall expect to see the leaves transition to a beautiful hue of Yellow. Acute symptoms include leaf curling, drying, an abnormal red or yellow color of leaves or areas between leaf veins… The fruit is not ornamentally significant. 0. Decaisneana Is a hybrid of two different Robinia species, it is distinguished by its small forms and rose pink flowers. Aphids, scale insects, whiteflies and caterpillars can also become problems on this tree, although these are usually less serious. The honey locust (Gleditsia triacanthos) is a fast-growing tree. Robinia pseudoacacia 'Purple Robe' Tree Characteristics. It's done this before and stopped the yellowing when it gets hot and sunny. Rounded Shape. The attractive features of the ‘Purple Robe’ locust tree are its young red leaves that turn to blue-green and then turn yellow in fall. ... White flower clusters produced before dark green leaves that turn yellow in fall. Some can be related to a disease, pests, improper humidity, transplanting stress, not enough or too much sunlight, plant aging, etc. What can I do to protect my trees? Leaves turn uneventful yellow in fall. This attractive variety features compound leaves comprised of small, rounded leaflets that emerge with a showy reddish-bronze tinge, mature to a bluish-green, and turn shades of yellow in the cool of fall. It produces a 2- to -4-inch brown pod that matures in October and persists into winter. The 6 to 14-inch-long, dull, blue/green leaves, made up of multiple leaflets, are some of the last to appear in spring and often drop early in the autumn, just barely fading to a sickly yellow/green before dropping. Grow in average, dry to medium, well-drained soils in full sun. The bright green leaves are pinnately compound, but you may also find compound pinnate leaves in honey locust trees. Purple Robe Idaho Locust This is a round-headed shade tree with highly fragrant and very attractive chains of deep pink flowers. Verticillium wilt is a fungus that enters the plant through roots. Hot, Dry Weather. Promptly remove suckers as they appear unless naturalization is desired. The variety ‘Purple Robe’ features beautiful, fragrant purple flowers. Click below to answer. I noticed some of you writing about a purple robe locust (robinia ambigua) tree. Unlike many fast-growing trees, though, the honey locust does not have invasive roots or weak wood. I noticed some of you writing about a purple robe locust (robinia ambigua) tree. It may be easier to discuss this over the phone; please feel free to contact me at the Extension office: 804-751-4401. The leaves of the "Purple Robe" locust emerge a cheerful bronze-red in the springtime, changing to a bronze-green throughout the summer and turning a … Why would so many leaves be turning yellow if no aphids, insects or fungus? Sawbust appearing between tree limbs, on trunk and on ground at the base of my 4-year old purple robe locust. These beautifully fragrant clusters cover the tree profusely that grows up to eight inches long each! As yellowing leaves are the only symptom you mention, it's very unlikely that the tree is diseased or suffering from an in insect infestation; however, if its condition doesn't improve, it might be caused by a nutritional deficiency, and this could easily be corrected on the basis of a soil test. ThriftyFun is powered by your wisdom! Tolerates a wide range of soils including sandy or nearly barren ones. Can you tell me a little more about the problem? And, I have the tree located with mid day and afternoon sun and in the grade almost at the low spot. Why would so many leaves be turning yellow if no aphids, insects or fungus? Fixes nitrogen. Very susceptible to locust borer. It has bluish-green foliage which emerges burgundy in spring. This is often apparent on younger leaves first, as your photo shows – they may be pale green, yellow, or even almost white in the most severe cases, with darker green veins. Good drought tolerance. Tolerates a wide range of soils including sandy or nearly barren ones. Roses. It is by its nature not based … This seems to have sent the roots into a shoot frenzy. Here is a link to a description of chlorosis, its ... ← Purple Robe Locust tree. It has chains of fragrant rose pea-like flowers with yellow eyes hanging below the branches in late spring. And, I have the tree located with mid day and afternoon sun and in the grade almost at the low spot. It has pinnate dark blue-green leaves, with each leaf having up to 23 lance-shaped to ovate leaflets. The fruit is not ornamentally significant. Description Purple Robe Black Locust is best known for the 10 days of flowering in the spring when it sets fragrant wisteria-like violet purple blossom flowers in pendant racemes (to 8” long). The oval pinnately compound leaves turn yellow in fall. Unlike black locusts, most of the leaves of honey locusts have no leaflet at the tip. Verticillium wilt is uncontrollable once the tree … Here is a link to a description of chlorosis, its ... ← Purple Robe Locust tree. A tough tree which should be saved for the toughest sites. Finely cut leaves turn yellow in fall and cast light shade. The oval pinnately compound leaves turn yellow in fall. Width: 20 - 30 feet. Diseases that often … Buhl, Id. Some of the more famous cultivars include Decaisneana, Frisia, Purple robe, Tortuosa, Unifoliola. But the yellow ones are smaller and litter my lawn all summer long. The flowers resemble sweet peas, but they hang from the branches like wisteria and smell faintly like roses. Height: 30 - 40 feet. Robinia pseudoacacia ‘Purple Robe’: ‘Purple Robe’ Black Locust 3 or alkaline except that which is permanently wet. For the past several years, the purple blooms show up in June and stay for about a week, then fall off and the leaves start turning yellow and dropping off, although most of the leaves stay green. The tree is hardy to Zone 3. Email. Trees naturally respond to limited water by dropping leaves to conserve water. Good drought tolerance. A landscape company planted one in my yard about five years ago. Anyone have any ideas? Tolerates some light shade, but avoid shady locations. Fixes nitrogen. The flowers tend to last longer than on the wild tree. The oval pinnately compound leaves turn yellow in fall. Symptoms are not readily obvious but can include leaf curling and dying, abnormal red or yellow leaf coloring and wilting branches. Among landscaping trees, honey locust has become very common, and with good reason. Not for general use in urban areas due to borer problems unless located in a moist, well-drained site with plenty of soil space. Twisty Baby ® black locust ( Robinia pseudoacacia 'Lace Lady'): Smaller size tree (20 feet high by 20 feet wide) with contorted limbs. #ProPlantTips for Purple Robe Locust Tree. Re: Leaves of Purple Robe Locust tree turning yellow--- Newt ( Jul 17, 05:00, 2005) Advice offered in this forum is of a general nature only. Erect or Spreading with a High Canopy. Asked May 30, 2017, 3:42 PM EDT. The oval pinnately compound leaves turn yellow in fall. For the past several years, the purple blooms show up in June and stay for about a week, then fall off and the leaves start turning yellow and dropping off, although most of the leaves stay green. The Black Locust Tree does well or is tolerant in Well-Drained Clay, Loamy, Sandy, Acidic soil. I=m afraid the rest of the leaves on the tree are going to drop before mid-summer. Once in bloom the flowers will be White in color. I have 4 ‘Purple Robes’ as curb trees at the bottom of my steeply sloping front yard. A landscape company planted one in my yard about five years ago. Bark: It has an approx 2 1/2: Answer from NGA July 22, 2009. It is slightly smaller in stature than the black locust tree, growing to a height of 40 feet with a spread of 25 feet. Fall clean up is easy with these small leaves, too! Establish it … Middle-aged ‘Purple Robe’ Black Locust. They are generally adaptable to many climates and conditions, though the black locust is urban intolerant. Similar to other cultivated honey locust trees, the ‘Purple Robe’ grows to between 30 and 40 ft. (9 – 12 m) tall and has a spread of up to 30 ft. (9 m) wide. Robinia pseudoacacia, commonly known in its native territory as black locust, is a medium-sized hardwood deciduous tree, belonging to the tribe Robinieae.It is endemic to a few small areas of the United States, but it has been widely planted and naturalized elsewhere in temperate North America, Europe, Southern Africa and Asia and is considered an invasive species in some areas. This hybrid begins blooming earlier than other locust trees, and blooms for a longer span of time. Question by judykadubec July 22, 2009. Although I have never before seen any signs or pests on the tree, I am assuming it has a locust borer problem. Roses. Spreads by root suckers. Ask an Expert is made up of groups and individual experts. Ornamental Features Purple Robe Locust has chains of fragrant rose pea-like flowers with yellow eyes hanging below the branches in late spring. The leaves are odd pinately compound with up to 23 lance-shaped to ovate leaflets. The 6 to 14-inch-long, dull, blue/green leaves, made up of multiple leaflets, are some of the last to appear in spring and often drop early in the autumn, just barely fading to a sickly yellow/green before dropping. The Black Locust Tree does well or is tolerant in Well-Drained Clay, Loamy, Sandy, Acidic soil. Purple Robe Locust has chains of fragrant rose pea-like flowers with yellow eyes hanging below the branches in late spring. Height: 40' Spread: 30' Shape: Rounded Foliage: Medium green, new growth purple Feature: Pink-purple spring flowers, yellow fall color Robinia pseudoacacia 'Purple Robe Black Locust' - The long pendulous flowers are bright magenta/purple and very striking. Robinia x ambigua ‘Purple Robe’ Fast-growing deciduous tree with a rounded growth habit to 35-40’ tall x 20-30’ wide.
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