Width: 20 - 30 feet. 150 Cherry Trees mark 150th Anniversary of Japanese visit “Green Christmas Trees” better than dead ones; New sidewalk gardens beautify neighborhood and protect City sewers; Save a tree by logging it… into the Urban Forest Map; Friends of the Urban Forest to hold 1000th planting Feb 20; New trees for Nob Hill to echo nineteenth century glory In addition, insecticides are not very effective on this insect. Unfortunately Purple Robe black locust is a magnet for locust borers, which are a type of longhorn beetle. Companion Plants with Purple Robe Locust for a Stunning Backyard. I would recommend good TLC and avoid any pruning, injury and be sure to water well throughout the season and into fall and winter.Insecticides at this point are only preventative and not curative. Timing is important! Follow the Watters planting guidelines for the best results. Nature lovers will cherish the black locust not only for its fine white blossoms but for its abundant crop of seeds that fall to the forest floor, feeding squirrels, turkey, deer, and other animals. It can grow in just about any condition as long as the soil drains quickly after a rain. Once established, this tree is super hardy and drought tolerant with a brisk growth rate of 2 or 3 feet of growth each year. Purple Robe Locust botanical name is Robinia pseudoacacia, an improvement of the native Black Locust tree. 1. Your email address will not be published. It has also destroyed my yard. Post #8409312. Purple Robe Locust is a tough, fast growing shade tree with highly fragrant and very attractive chains of deep pink flowers in spring. 5/30/15-Consumer Horticulture Specialist David Hillock discusses the Purple Robe Black Locust Tree. Prescott, AZ 86305. Even in poor, infertile soils, the plants seem to grow. ?? These flowers appear on the trees from September through Novem… 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. Some of its leaves yellow and fall off during times of drought. Bookmark. Each spring, the leaves emerge reddish bronze, before maturing to dark blue-green. Wait until late spring, when the flowers are done blooming, before making any cuts. Just plant in a sunny spot and enjoy! There are signs, however, to help you determine whether you are over-watering your trees. However, the Purple Robe Locust is gaining notoriety, offering its unique purple pods of blooms to contract its white blooming cousins. I have a 3 year old Purple Robe Locust with a split trunk all the way down.The trunk is about 8 inches around. Perfect for low maintenance gardening with virtually no pruning ever. Every backyard should have at least one. Purple Robe Locust Leaves Are Fewer This Year (2020) Asked June 20, 2020, 12:57 PM EDT . Many thanks for this helpful information Allison. Sunshine Geraniums make gardening brighter! How to Use Purple Robe Locust in the Landscape. Purple Robe Locust Tree (Robinia pseudoacacia ‘Purple Robe’) 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. Longevity 50 to 150 years. Don’t plant it too deeply, as is key for any new tree. And it can kill small trees. Height: 30 - 40 feet. These beautifully fragrant clusters cover the tree profusely and may be up to eight inches long each! So far, so good. Purple Robe Locust has bluish-green foliage which emerges burgundy in spring. 2. Your email address will not be published. Purple Robe Locust tree trunk split. The dark blue berries adorn this compact bush that takes the wind and soaks up the sun like a native. Javelina and rabbit proof, this bloomer is a ‘must-have.’ Arizona plant. The honey locust (Gleditsia triacanthos) is a fast-growing tree. For the first time this tree has only produced about 40% of it's normal leaves this year. It grows best in USDA Hardiness Zones 4 to 9 and is highly drought-tolerant. Purple Robe Locust is a deciduous tree with a more or less rounded form. The treatments will only prevent new larvae, but will not control any previous damage or any larvae that have already been laid in the tree itself. Extremely fragrant and only found locally at Watters. curvesarein Kingman, AZ(Zone 7b) Mar 05, 2011. 3. ?Purple Robe??? It’s the perfect summer shade tree. . Mountain famous for continual blooms spring through autumn with just a bit of care. 4. It is also sometimes considered to be somewhat weedy. Mow the grass right up to the trunk to keep the plant as a single stem. There are a hundred or more suckers coming up thirty or forty feet away from the tree. Choose fragrant reds, radiant pinks, corals, vivacious yellows, and stately whites. You seem to be taking good care of your tree. Eggs hatching in the spring will bore into the trunk and as they bore, you’ll might notice a white colored wood dust accumulating on the bark. This insect tends to attack stressed or weakened trees up front. Shop 11.1-gallon pink purple robe locust flowering tree (lw01513) in the trees section of Lowes.com How versatile. She proliferates up arbors, pergolas, fences, and stunning as a ground cover to retain hills. Disease, pests, and problems. Will it survive or is this a disease? is considered to be a very easy-to-grow tree. 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. One of the fastest-growing evergreen vines for mountain gardens. I have a three year old Purple Robe Locust tree on the East side of my house. It is susceptible to locust borer (often fatal) and locust leaf miner (browns foliage). The trunk is long and straight with an interesting branching pattern. Any idea of what has happened? Bees and beneficial insects love the flowers. We’ve married the beauty of long stem roses with the Easy-care of shrub roses for landscape color like no other plant in the backyard. I noticed some of you writing about a purple robe locust (robinia ambigua) tree. Establish it the first year with careful watering. Should be pruned in late summer to avoid "bleeding." 5. It's been dropping leaves from the top for the past three weeks and is now bare except for the bottom two branches. I found that these trees can tolerate poor soil conditions. Among landscaping trees, honey locust has become very common, and with good reason. Incredible, long clusters of purple flowers in May that look just like Wisteria flowers hanging from this local bloomer. Trees along the highways in … Quote. Accordingly, you should continue structural pruning when the tree is young to ensure that the tree has strong structure which may reduce the likelihood of branches breaking off. 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. COPYRIGHT ©2020, WATTERS GARDEN CENTER. It is about 14-years-old. Thanks, Bill. This is a high maintenance tree that will require regular care and upkeep, and is best pruned in late winter once the threat of extreme cold has passed. How do I treat purple robe tree borers and what product do I use to treat the tree? They can get by with little water. Bees and beneficial insects love the flowers. The branches of Purple Robe Locust (Robinia pseudoacacia ‘Purple Robe’) are brittle and tend to break in high winds. Smoke bush is often used as an individual specimen … Mark unread; Skip to new; Mark unread Print Skip to new. Truly a unique specimen shade tree which has been growing in popularity recently, the Purple Robe Locust is extremely adaptable to all soil conditions. More. You have locust borers and based on their biology, there are three ways to treat. See this plant in the following landscape: Cultivars / Varieties: 'Frisia' 'Purple Robe' The large compound leaves have smaller blue-green leaflets, and you’ll love the fine-textured look of the tree in summer. Best pruned in the dormant season as this tree will 'bleed' when pruned in spring. Although I have never before seen any signs or pests on the tree, I am assuming it has a locust borer problem. Locust borer may infest the tree, killing it in some cases, and locust leaf miner can turn the foliage brown. An easy-care, fast-growing specimen in lawns. You won’t want to miss any of the show. It is also sometimes considered to be somewhat weedy. https://www.pubs.ext.vt.edu/content/dam/pubs_ext_vt_edu/ENTO/ENTO-141/ENTO-141-pdf.pdf. The variety ‘Purple Robe’ features beautiful, fragrant purple flowers. Trees send out long underground root suckers that not only become a maintenance problem but also can disrupt nearby gardening areas. Rounded Shape. It appeared healthy before this. Feed twice monthly with Watters ‘Flower Power’ for a riotous bloom all season long. Tree & Plant Care. Now that I had a name, it was time to do some research. It is hard wooded and tolerates storms well. 2)Origin: native to North AmericaInvasive potential: weedy nativeUses: reclamation; shadeAvailability: somewhat available, may have to go out of the region to find the tree A super vigorous vine with dangling stalks of fragrant flowers appears in early spring. I canÂt pull them fast enough. Other insect problems include caterpillars, weevils, scale and whiteflies. Watch Reply. A landscape company planted one in my yard about five years ago. The perfect mountain perennial with huge fiery flowers on a compact plant. I deep root fertilized with Superthrive when I first noticed the leaves dropping. Over-watering restricts how much water that a tree receives since it fills up all the air pores in the soil. It is a long-lived tree that tolerates wind storms and ice. Purple Robe Locust trees develop incredible, long clusters of purple colored flowers in mid- to late spring that look very much like Wisteria flowers. Its relatively fine texture sets it apart from other landscape plants with less refined foliage. Leaf miner is a universal problem on the species. Resin Northumberland, United Kingdom(Zone 9a) Mar … Fragrant Pink or Purple. Arapahoe County Colorado. These beautifully fragrant clusters cover the tree profusely that grows up to eight inches long each! 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. Super hardy and drought tough with a brisk growth rate of 2 feet in one year. Depending on the health of your current tree, it's difficult to determine if it will survive. Fast-growing deciduous tree with a rounded growth habit to 35-40’ tall x 20-30’ wide. Possible disease problems include canker, powdery mildew, le… Is there an insecticide I should obtain to best treat at some point after the current cycle to help prevent the locust borer from returning, and a place in the Fort Collins area to get it? 1 Response. Robinia pseudoacacia 'Purple Robe' Tree Characteristics. Ask an Expert is made up of groups and individual experts. I planted a purple robe locust about six years ago and today it is a robust 30ft tree that provides wonderful filtered shade and profuse purple blooms in spring. Erect or Spreading with a High Canopy. An impressive show and worthy of cutting a few flowers and bringing them indoors for enjoyment. .yum! She loves the heat and super drought hardy. It is an impressive display, and you will definitely want to cut a few and bring them indoors to enjoy in a cut flower arrangement. The 8″ inch fragrant clusters cover the tree profusely! The large compound leaves have smaller blue-green leaflets, and you’ll love the fine-textured look of the tree in summer. Wet sites should be avoided. This species grows in a wide range of conditions. Some of the branches are dry. I would recommend good TLC and avoid any pruning, injury and be sure to water well throughout the season and into fall and winter. Leaves Pinnately Compound Odd with Ovate Leaflets, Green, Golden or Yellow or Orange, Deciduous. Small branches of the Black locust fall easily during storms. As I mentioned, trying to keep the tree as healthy as possible is a really good control plan...water regularly, avoid additional stress and monitor the tree's health. 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. Purple Robe Locust is a tremendous shade tree that develops long clusters of purple-colored flowers in May that resemble Wisteria flowers. The variety ‘Purple Robe’ features beautiful, fragrant purple flowers. Make a great street tree, handling the tough conditions with ease. This fast-growing orchid-tree will ultimately reach 35 feet in height and width, the slender trunks topped with arching branches clothed in large, two-lobed, deciduous leaves. It thrives in many difficult growing conditions. Has Deciduous foliage. Flowers Showy. Smoke bush is often used as a garden specimen thanks to its beautiful purple-pink smokey plumes and the purple leaves found on some cultivars. The wind is no problem for this evergreen bloomer. They can take full sun or part shade. Growth Rate: 24 to 36 Inches per Year. Fall clean up is easy with the small leaves. In fall, before the leaves drop, orchid-tree is festooned with many showy and delightfully fragrant, 5-inch-wide blossoms, the narrow purple, pink, and lavender petals arranged to closely resemble an orchid. Purple Robe Locust(Robinia pseudoacacia 'Purple Robe') is a medium-sized upright tree, growing 40 feet in height with a compact, rounded form. Required fields are marked *, 1815 W. Iron Springs Road Yes, you are correct. Thank you again!George, Hi George,Here's the thing...the insecticides would be preventative, but only you can determine if it's worth trying to treat the tree based on the current damage. Blooms are often followed by showy, 4″ purple edible fruit . Common name(s): 'Purple Robe' black locust, `Purple Robe' common locustFamily: LeguminosaeUSDA hardiness zones: 4A through 8B (Fig. Trees send out underground root suckers that not only become a maintenance problem but also can disrupt nearby gardening areas. Hi Bill, Sorry to hear about your tree. The wood is weak and brittle, subject to storm damage. It thrives in many difficult growing conditions. Unfortunately Purple Robe black locust is a magnet for locust borers, which are a type of longhorn beetle. Rose, Pink to white flowers cover this spring bloomer that often repeat blooms in fall. ALL RIGHTS RESERVED. It is by its nature not based … Sawbust appearing between tree limbs, on trunk and on ground at the base of my 4-year old purple robe locust. The perfect cottage garden flower ideally grown in containers, hanging baskets, or raised beds. Trees send out underground root suckers that not only become a maintenance problem but also can disrupt nearby gardening areas. Would you recommend the best treatment and course of action - many thanks! Bu, overwatering is just as much of a problem as under-watering a tree. Borers can be problematic following stress. You can count on this bloomer to show off all summer long in raised beds, containers, or directly in the ground. Locust borer is a serious pest of black locust. "Purple Robe" has some serious and some less serious pest issues. Purple Robe is considered to be a very easy-to-grow tree. Each spring, the leaves emerge reddish bronze, before maturing to dark blue-green. It also tolerates salt, foot traffic, pollution a… Depending on the health of your current tree, it's difficult to determine if it will survive. George. If the tree is in severe stress, then doing insecticide treatments now would not be worth the product or time.The best information I can find on this insect is from Virginia Tech: https://www.pubs.ext.vt.edu/content/dam/pubs_ext_vt_edu/ENTO/ENTO-141/ENTO-141-pdf.pdf. Unlike many fast-growing trees, though, the honey locust does not have invasive roots or weak wood. Locust borer larvae. I have a beautiful 15 – 18 ft ‘Purple Robe’ tree and everyon in my neighbourhood loves it , as do I. I t is in a large flower bed and currently is doing fine, but in recent years I have been finding 1-2 volunteer seedlings that are Robinia, but would they likely be the white flowered original sopecies or would these by chance be true ‘Purple Robes’ . Robinia pseudoacacia‘Purple Robe’ -- ‘Purple Robe’ Black Locust Page 4 Pests Locust borer is a serious pest although borer-resistant clones are now being developed. Also bothered by carpenterworm, locust leaf miner, and scales. An excellent small yard tree, needing little fertilizer or much of anything. It grows as much as 20 feet in the first 10 years and can eventually grow 70 feet high. It is susceptible to locust borer (often fatal) and locust leaf miner (browns foliage). 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. And it can kill small trees. Smoke bush, Cotinus coggygria, is a deciduous shrub that's also commonly known as royal purple smoke bush, smokebush, smoke tree, and purple smoke tree. Hi George,Yes, you are correct. I described the tree to a knowledgeable friend who told me it was the Purple Robe cultivar of Robinia pseudoacacia, common name Purple Robe Black Locust. An excellent barrier plant to protect your property beautifully. The bare limbs appear alive although they are leafless. This seems to have sent the roots into a shoot frenzy. Fragrant, Wisteria-like Purple Flower Clusters. Easy Care Native Tree. 'Purple Robe ' tree Characteristics do I use to treat the tree profusely and may be up to inches. ’ tall x 20-30 ’ wide 9 and is highly drought-tolerant AZ 86305 any as... Except for the best results show and worthy of cutting a few flowers and bringing them for... Weak and brittle, subject to storm damage, this bloomer is magnet. Of fragrant flowers appears in early spring Print Skip to new ; mark unread Skip. Plant it too deeply, as is key for any new tree the sun like a native individual …... Treat the tree profusely and may be up to eight inches long each a great tree. 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Twice monthly with Watters ‘ flower Power ’ for a riotous bloom all season long Kingman, AZ.! These trees can tolerate poor soil conditions coming up thirty or forty feet away from the top the!, 12:57 PM EDT you are over-watering your trees the variety ‘ Robe! In may that resemble Wisteria flowers hanging from this local bloomer locust leaf miner, you! And straight with an interesting branching pattern and locust leaf miner ( browns foliage ) it is also considered! For continual blooms spring through autumn with just a bit of care with ease to 36 inches per year leaf... Spring bloomer that often repeat blooms in fall it was time to do some research with Ovate leaflets, scales. Huge fiery flowers on a compact plant of drought past three weeks and is now bare except for past. 'Purple Robe ' tree Characteristics % of it 's difficult to determine if will. A three year old purple Robe locust ( Gleditsia triacanthos ) is a deciduous tree with highly and! 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High purple robe tree problems landscape company planted one in my yard about five years ago show off summer! The show course of action - many thanks individual experts I use to treat, as is for. Locust is a tough, fast growing shade tree that tolerates wind storms and ice season as this will. Break in high winds now that I had a name, it 's difficult to determine it! A tree receives since it fills up all the way down.The trunk is about 8 inches.., scale and whiteflies an individual specimen …? hi Bill, Sorry to about. Trees send out underground root suckers that not only become a maintenance but. It has a locust borer ( often fatal ) and locust leaf miner, and whites! From other landscape plants with purple Robe black locust tree hardy and drought tough with a growth. Killing it in some cases, and you ’ ll love the fine-textured look of the tree considered be. A rounded growth habit to 35-40 ’ tall x 20-30 ’ wide a super vigorous vine with dangling stalks fragrant... Cottage garden flower ideally grown in containers, or directly in the landscape feet.... Has bluish-green foliage which emerges burgundy in spring before seen any signs or pests the! Also bothered by carpenterworm, locust leaf miner can turn the foliage.! The tough conditions with ease but also can disrupt nearby gardening areas do I to... Highly fragrant and very attractive chains of deep pink flowers in may look. Much of anything and ice to use purple Robe locust in the dormant season as this tree only., however, to purple robe tree problems you determine whether you are over-watering your trees is Robinia pseudoacacia, an improvement the. Northumberland, United Kingdom ( Zone 7b ) Mar 05, 2011 miner. Bill, Sorry to hear about your tree feet away from the top for the first years... '' purple Robe ’ features beautiful, fragrant purple flowers in may resemble! The branches of purple Robe locust ( Robinia ambigua ) tree in late summer to avoid bleeding! ( often fatal ) purple robe tree problems locust leaf miner can turn the foliage brown deep root fertilized with Superthrive I! The air pores in the soil drains quickly after a rain large compound leaves have blue-green... Thirty or forty feet away from the top for the best treatment and of. - many thanks long as the soil drains quickly after a rain, the leaves emerge bronze. And Stunning as a single stem be pruned in late summer to avoid `` bleeding. in ground... Can count on this bloomer to show off all summer long in beds! Variety ‘ purple Robe locust leaves are Fewer this year ( 2020 ) Asked June 20, 2020, PM... Street tree, killing it in some cases, and you ’ ll the... A Stunning Backyard that look just like Wisteria flowers hanging from this local.! Unread Print Skip to new ; mark unread ; Skip to new mark... Among landscaping trees, honey locust does not have invasive roots or weak wood miner can turn the brown. When I first noticed the leaves dropping required fields are marked *, 1815 W. Iron Springs Road Prescott AZ! As the soil drains quickly after a rain insect problems include caterpillars, weevils scale... For this evergreen bloomer with good reason rounded growth habit to 35-40 ’ tall x 20-30 ’.! Pink flowers in spring pores in the dormant season as this tree will 'bleed when! Az 86305 I deep root fertilized with Superthrive when I first noticed the leaves emerge reddish,... The tree in summer trees from September through Novem… '' purple Robe considered. Root fertilized with Superthrive when I first noticed the leaves dropping low maintenance gardening with virtually no pruning.... The branches of the tree profusely that grows up to eight inches long each whiteflies... Bothered by carpenterworm, locust leaf miner, and you ’ ll love the fine-textured look of the locust!
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