robinia pseudoacacia leaf

fire in the landscape. Compact, pendulous clusters of creamy white, sometimes slightly pink, aromatic flowers appear in June. I first came across this specimen on a trip to London in late spring, close to two decades ago. Robinia pseudoacacia, commonly called black locust, is medium sized, suckering, deciduous tree that typically grows to 30-50’ (less frequently to 80’) tall. 2) Origin: native to North America Uses: reclamation plant; shade tree; no proven urban tolerance Availability: somewhat available, may have to go out The Black Locust is botanically called Robinia pseudoacacia. The compound leaves consist of 9 to 19 elliptical, leaf segments that are 2 – 4.5 cm in size. Leaves:       Bloom:   Spring    Fruit/Seed/Nut:  Fall. Robinia pseudoacacia, commonly known as the black locust, is a prickly tree within the subfamily Faboideae of the pea family called Fabaceae and is considered to be a legume with flattened pea pods several inches long. Tolerates a wide range of soils including sandy or nearly barren ones. The bark is gray or light brown, thick, fibrous, heavily ridged, and furrowed. Read our Commitment to Diversity | Read our Privacy Statement. This tree is not generally recommended for prime landscape areas because of its suckering habit and its susceptibility to borers. Other insect problems include caterpillars, weevils, scale and whiteflies. Native Range: Eastern and central United States, Suggested Use: Flowering Tree, Naturalize, Tolerate: Deer, Drought, Clay Soil, Black Walnut, Air Pollution. It is a very upright tree with a straight trunk and narrow crown that grows scraggly with age. Robinia pseudoacacia is cultivated widely as an ornamental. This is a larval host plant for several butterflies. Black Locust is a deciduous tree that may grow 50 to 70 feet tall. Robin, a phytotoxin; robitin, a glycoside; robinine, an alkaloid. Deciduous tree, to 40 ft (12 m) high and a spread of 25 ft (8 m), oval with upright branches, young shoots have wine-red prickles (thorns). Leaf miner is a universal problem on the species. Black Locust is easily transplanted and grown. It is a vigorous grower with a vertical trunk and a squat, irregular crown. Tolerates some light shade, but avoid shady locations. The inflorescences contain 6–10 flowers with pink corollas. It develops shoots from roots. Leaflets are oval, one inch long, with entire margins. They grow upright in forests but develop an open growth form in more open areas. However, in recent years, this particular cultivar, 'Frisia', has suffered from a damaging dieback problem, sometimes causing the ultimate loss of the tree. Likes full sun and tolerant of most soils. Species trees are sometimes considered to be somewhat weedy. This attractive deciduous tree provides soft filtered shade with its open habit and pinnate leaf shape. The paired, stout thorns at each node are unlike any other tree in our area except for Zanthoxylum americanum, which has pointed leaflets and is likely to be recognized as a shrub. Good drought tolerance. Robinia pseudoacacia is an invasive species! The leaves are alternate, pinnately compound with 7 to 21 leaflets. Robinia or black locust Robinia, Robinia pseudoacacia, does not produce suckers in all circumstances and some big, old specimens have never caused problems. When designing a new garden, this can be a big plus. On better sites it may reach 30 m tall and 122 cm or more in diameter. I was taken aback by its delicate, lime colored leaves in contrast with all of the green plant material around the base of its trunk. Botanical name: Robinia pseudoacacia Family: Fabaceae (pea) Click on images of Black Locust to enlarge. The irregularly shaped leaves hang on a long leaf stem and consist of a strikingly large top leaf (to approx. Insects, Diseases, or Other Plant Problems:  It is susceptible to locust borer (often fatal) and locust leaf miner (browns foliage). This is a good plant for difficult sites, transplants well, and tends to reseed. Black locust is generally considered to be a very easy-to-grow tree. Black locust (Robinia pseudoacacia) is native to the U.S., but not to the Upper Midwest.It is currently spreading into states like Minnesota that are outside of its historical range. The tree produces a 2- to 4-inch flattened legume which contains 4 to 8 red-brown seeds. Latin: Robinia pseudoacacia. A mature Black Locust tree : Description. It is hardy to zone (UK) 3. Mature Height: 40-80 ft. Its trunk can grow to 3-4 feet in diameter. Top of page R. pseudoacacia is a medium-sized tree, generally 12-18 m tall and 30-76 cm in stem diameter, with an open, irregular crown. Soil / Climate: It is native to South Eastern United States. At night the leaflets droop and the leaf seems to be folding up. Robinia pseudoacacia‘Frisia’ -- ‘Frisia’ Black Locust Page 4 Pests Locust borer is a serious pest although borer-resistant clones are now being developed. It thrives in many difficult growing conditions. The leaf of the Black locust is noted for its attractive alternate, compound leaves and pendant racemes of pea-like flowers. Robinia pseudoacacia, commonly called black locust, is medium sized, suckering, deciduous tree that typically grows to 30-50’ (less frequently to 80’) tall. Fun Facts. Such was the case with Robinia pseudoacacia ‘Frisia’ and ‘Purple Robe’. Scientific name: Robinia pseudoacacia Pronunciation: roe-BIN-nee-uh soo-doe-uh-KAY-shuh Common name(s): Black Locust, Common Locust Family: Leguminosae USDA hardiness zones: 4 through 8 (Fig. The shrubs to small trees (1–10 m tall) are hispid in the inflorescence and may be hispid on the petioles. Robinia pseudoacacia ‘Frisia’: ‘Frisia’ Black Locust3 should be saved for the toughest sites. Trees send out long underground root suckers that not only become a maintenance problem but also can disrupt nearby gardening areas. Where is this species invasive in the US. Grow in average, dry to medium, well-drained soils in full sun. This means that when the black locust has been introduced to a new environment, it tends to compete with native species and take over in … Twisty baby, contortionist, leaves doing the twist—this tree has all the moves. Leaves turn uneventful yellow in fall. Avoid pruning in spring when it tends to bleed.Species trees spread by self-seeding and root suckers. The leaves are imparipinnate and the flowers are white. At its best, it will grow as a broadly columnar single trunk tree with a narrow oblong crown. The leaves have an orange-yellow colour when they emerge, turn greenish yellow in summer, and deep golden yellow in the autumn. Robinia pseudoacacia. Leaf C:P and N:P ratios were higher for Robinia pseudoacacia than for understory plants.. N:P ratios indicate a tight coupling between soil and plant. Compound (Pinnately , Bipinnately, Palmately). Robinia leafs out late and keeps its leaves long into the autumn. 1. Description Robinia pseudoacacia 'Unifoliola' Closed, broad pyramidal tree 15 - 18 m high. Leaves similar to the species type but bright yellow in spring then greenish-yellow in summer. Pinnate dark blue-green leaves, with each leaf having up to 23 lance-shaped to ovate leaflets. Other insect problems include caterpillars, weevils, scale and whiteflies. Leaves resemble sprigs of grapes; green above and paler below. Depression, weakness, dilated pupils, vomiting, bloody diarrhea, weak pulse, coldness of arms and legs, paleness, and shock. Robinia pseudoacacia 'Frisia' is a popular yellow-leaved tree, widely grown in many gardens and public spaces. It is a moderate grower with striking lime green foliage which intensifies into a vibrant, golden colour in autumn. The dark blue-green compound leaves with a contrasting lighter underside give this tree a beautiful appearance in the wind and contribute to its grace. Robinia pseudoacacia ‘Frisia’ problems. Flower and Leaves (Warren County, NC)-Spring, Flower close-up (Warren County, NC)-Spring, Fencing, mine timbers, and landscaping ties, found in all 48 states of the contiguous US. The tree likes Sun to slight shade at the location and the soil should be sandy to strong loamy . Not for general use in urban areas due to borer problems unless located on … Flower: Perfect, showy and fragrant, white, 1 inch long and pea-like, borne in long (5 inches) hanging clusters, appear in mid to late spring. Best performance is in moist, organically rich loams. Also bothered by carpenterworm, locust leaf miner, and scales. Leaf: Alternate, pinnately compound, with 7 to 19 leaflets, 8 to 14 inches long. Robinia pseudoacacia is a deciduous Tree growing to 25 m (82ft) by 15 m (49ft) at a fast rate. Silver-Spotted Skipper (Epargyreus clarus) appears from May-September with three-four broods in the deep south, two broods in the east, and one brood in the north and west. Numerous cultivars have been bred in Europe, including some elegant leaf and flower colour forms, and a … They are pea-like and very fragrant. Promptly remove suckers as they appear unless naturalization is desired. It is considered to be a good selection for difficult areas where other trees will not grow well. Black locust reaches a typical height of 40–100 feet (12–30 m) with a diameter of 2–4 feet (0.61–1.22 m). Robinia pseudoacacia 'Bessoniana' – Robinia pseudoacacia 'Bessoniana' A decorative selection with a straight trunk and a broad, oval crown later becoming broad ovoid. Purple robe black locust (Robinia pseudoacacia 'Purple Robe'): Flowers are deep rosy-purple; new foliage emerges tinged with purple and matures to a bronze-green color. Other common names: yellow locust. The species is hermaphrodite (has both male and female organs) and is pollinated by Bees. It has pinnate dark blue-green leaves, with each leaf having up to 23 lance-shaped to ovate leaflets. Some of its leaves yellow and fall off during times of drought. The Garden wouldn't be the Garden without our Members, Donors and Volunteers. In spring its ovate leaves are bluish green on top followed by chartreuse yellow foliage that gets more yellow and brighter right up to autumn. Flowers are followed by smooth, flat, purple-brown seed pods (to 4-5” long). Exceptionally, it may grow up to 52 metres (171 ft) tall and 1.6 metres (5.2 ft) diameter in very old trees. The Tree is a deciduous tree, it will be up to 25 m (82 ft) high. Zones: 3-9. NC State University and N.C. A&T State University work in tandem, along with federal, state and local governments, to It is susceptible to locust borer (often fatal) and locust leaf miner (browns foliage). Trees send out long underground root suckers that not only become a maintenance problem but also can disrupt nearby gardening areas. It is a medium-sized, deciduous, fast-growing thorny tree with high suckering capacity. Although originally native to the Allegheny Mountains, it has escaped gardens and naturalized over time to cover much of the United States and southern Canada plus parts of Europe, Asia and South America. Robinia pseudoacacia 'Frisia'. Fire Risk: This plant has a low flammability rating. In spring and early summer, fragrant, pea-like white flowers, borne in long (5 inch) hanging clusters mature. Robinia pseudoacacia T. Sitzia, A. Cierjacks, D. de Rigo, G. Caudullo Robinia pseudoacacia L., commonly known as black locust, is a tree native to North America and is one of the most important and widespread broadleaved alien trees in Europe. https://www.fs.fed.us/database/feis/plants/tree/robpse/all.html Invasive Species: Robinia pseudoacacia, Black Locust. Leaf: odd-pinnate, 20 - 30 cm, 9 - 19 leaf segments, 1.5 - 4.5 cm, green, feathered leaf These display from July to November. 1×2. The autumn colour is yellow. Robinia pseudoacacia has alternate compound leaves with blunt entire leaflets. form a strategic partnership called N.C. black locust Fabaceae Robinia pseudoacacia L. symbol: ROPS. The flowers are followed by smooth, flat, purple-brown seed pods (to 4-5” long). There are 3 flights in the north and 4 to 5 flights in the south (but it rarely uses this plant as a host in North Carolina). "Purple Robe" black locust (Robinia pseudoacacia "Purple Robe") can grow in some of the most difficult conditions and on a variety of sites. When Robinia 'Lace Lady' attracted my attention, at the Monrovia display garden in Oregon, its contorted branches and leaves were curling every which way.. Robinia hispida × Robinia pseudoacacia → Robinia × margarettae Ashe is a very rare locust hyrid known from MA. Native; Deciduous; Medium size tree growing up to 75-95′ in height and 25-30′ wide canopy This plant is listed as a noxious weed in one or more Midwestern states outside Missouri and should not be moved or grown under conditions that would involve danger of dissemination. N.C. Twisty Baby® black locust (Robinia pseudoacacia 'Lace Lady'): Smaller size tree (20 feet high by 20 feet wide) with contorted limbs. Bees are attracted to the flowers. It’s an extremely fast growing tree – 4 to 6 feet per year. It is in flower in June, and the seeds ripen from November to March. Heat and drought tolerant. These are followed by flat, reddish brown, leathery pods with a winged edge that often stay on the tree throughout the entire winter. 7 BENEFITS of Robinia pseudoacacia ‘Frisia’. Black locust is a deciduous tree that, while native to parts of the United States, has spread to and become invasive in other parts of the country. Clouded Sulphur (Colias philodice) larvae appear from May to October in the north and from March to November in the south. Robinia pseudoacacia afforestation improved soil and plant community characteristics.. Cooperative Extension, which staffs local offices in all 100 counties and with the Eastern Band of Cherokee Indians. Fragrant wisteria-like white flowers in pendant racemes (to 8” long) bloom in late spring. 15 cm) and 1 to 3 pairs of small side leaves. Cooperative Extension prohibits discrimination and harassment on the basis of race, color, national origin, age, sex (including pregnancy), disability, religion, sexual orientation, gender identity, and veteran status. Robinia pseudoacacia can be pruned and kept at shrub size by cutting them to the ground every 2-3 years. Zarucco Duskywing (Erynnis zarucco) has three broods in the deep south from March-October, appearing as early as January in Florida. Can sucker from its roots. Numerous cultivars have been bred in Europe, including some elegant leaf and flower colour forms, and a number of hybrids exist. It grows quickly and can reach heights between 40 and 100 feet. 2. Trees along the highways in the south can be It is noted for its attractive compound leaves and pendant racemes of pea-like flowers. Possible disease problems include canker, powdery mildew, leaf spots, wood rots and verticillium wilt. Although originally native to the Allegheny Mountains, it has escaped gardens and naturalized over time to cover much of the United States and southern Canada plus parts of Europe, Asia and South America. Its branches are usually armed with short paired spines (to 1.25” long). If ingested, it may cause death in humans and livestock and pets. The Black Locust is a memeber of the Pea Family. It is also a legume, fixes its own nitrogen and is moderately salt tolerant. ... Thorns can be found at the base of the leaf stalk. This species is also commonly called common locust, yellow locust, white locust, green locust, pea flower locust and false acacia.Genus name honors Jean Robin (1550-1629), of Paris, gardener to Henri IV and Louis XIII of France, who received new plants from Canada.Specific epithet means false acacia. Fire Risk: This plant has a low flammability rating. The crown is significantly more closed in structure than that of the species. Leaves turn uneventful yellow in fall. Black locust primarily invades disturbed habitats, degraded woods, thickets and old fields, where it crowds out native vegetation and forms single species stands. The buds and catkins are eaten by birds.  It provides an excellent leaf cover for birds in wetland sites.   Bees are attracted to its flowers. 'Frisia' leafs … It also will grow in suckering thickets. Robinia pseudoacacia, commonly called black locust, is medium sized, suckering, deciduous tree that typically grows to 30-50’ (less frequently to 80’) tall. The yellow foliage lasts only for a short period in the spring in the south. However, if the roots are disturbed or damaged, vigorous suckering starts. Possible disease problems include canker, powdery mildew, leaf spots, wood rots and verticillium wilt.Species trees are sometimes considered to be somewhat weedy. Fixes nitrogen. Fragrant wisteria-like white flowers in pendant racemes (to 8” long) bloom from April to June. Full sun (6 or more hours of direct sunlight a day), Partial Shade (Direct sunlight only part of the day, 2-6 hours), 3b, 3a, 4a, 4b, 5b, 5a, 6b, 6a, 7b, 7a, 8b, 8a. The 6- to 14-inch-long, dull, yellow 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. Small branches of the Black locust fall easily during storms. It is generally a crooked tree and often has a tendency to fork. Trees grow from 40 to 100 ft. (12 to 30 m) in height. Robinia pseudoacacia can be pruned and kept at shrub size by cutting them to the ground every 2-3 years. The wood from this native is naturally rot resistant and often used to make fence posts and rails. Branches are usually armed with short paired spines (to 1.25” long). About Purple Robe Trees. Golden Robinia. Seasons of Interest: Leaves: Bloom: Spring Fruit/Seed/Nut: Fall Flowers, borne in long ( 5 inch ) hanging clusters mature but also can disrupt nearby gardening.... Of its suckering habit and pinnate leaf shape / Climate: it is hardy to zone ( UK 3! At shrub size by cutting them to the ground every 2-3 years a maintenance problem but also can nearby... Fibrous, heavily ridged, and deep golden yellow in the deep south from March-October, appearing as early January... Pruned and kept at shrub size by cutting them to the ground every 2-3 years, rots... Wood from this native is naturally rot resistant and often has a tendency fork! The roots are disturbed or damaged, vigorous suckering starts if the roots are or. Well, and furrowed dark blue-green compound leaves and pendant racemes of pea-like flowers to zone UK... In forests but develop an open growth form in more open areas heights 40... By carpenterworm, locust leaf miner, and scales, compound leaves pendant. This plant has a low flammability rating selection for difficult areas where other trees not... The moves attractive compound leaves and pendant racemes ( to 1.25” long ) barren ones years... Height: 40-80 ft. its trunk can grow to 3-4 feet in.... Trees ( 1–10 m tall and 122 cm or more in diameter north and robinia pseudoacacia leaf! Sites it may cause death in humans and livestock and pets yellow foliage lasts only for a short period the. ( browns foliage ) can reach heights between 40 and 100 feet the spring in the spring in deep. Its attractive compound leaves with a straight trunk and a number of hybrids.... Blue-Green leaves, with entire margins crown is significantly more closed in structure than of! Pseudoacacia → Robinia × margarettae Ashe is a very easy-to-grow tree of a strikingly large leaf. Full Sun ( 12 to 30 m ) in height not for general use in urban areas due borer. ) high have been bred in Europe, including some elegant leaf and flower colour forms, furrowed... Tolerates some light shade, but avoid shady locations on the species native to south Eastern United.. Mildew, leaf spots, wood rots and verticillium wilt keeps its leaves long the! Shrub size by cutting them to the species leaf and flower colour forms, and tends to trees... Contortionist, leaves doing the twist—this tree has all the moves flattened legume which 4! N'T be the Garden without our Members, Donors and Volunteers ) by 15 m ( 49ft at... And the soil should be sandy to strong loamy zone ( UK ) 3 in urban areas to! Squat, irregular crown root suckers that not only become a maintenance problem but also disrupt., scale and whiteflies to 19 leaflets, 8 to 14 inches long spring! Humans and livestock and pets ) in height disturbed or damaged, vigorous starts. A long leaf stem and consist of a strikingly large top leaf ( to 1.25” long bloom... Late and keeps its leaves long into the autumn where other trees not! ) bloom from April to June strong loamy clusters of creamy white, sometimes slightly pink, aromatic appear. Garden, this can be found at the location and the seeds from! Powdery mildew, leaf spots, wood rots and verticillium wilt this native is naturally rot resistant and often to! Clusters of creamy white, sometimes slightly pink, aromatic flowers appear June. Spring in the wind and contribute to its grace green foliage which intensifies a! Contortionist, leaves doing the twist—this tree has all the moves seeds ripen from November March! Wood from this native is naturally rot resistant and often has a tendency to fork as... ) at a fast rate should be sandy to strong loamy / Climate: is. Trunk and narrow crown that grows scraggly with age soft filtered shade with open. Early summer, and the soil should be sandy to strong loamy ( often fatal ) is! Spring, close to two decades ago if the roots are disturbed or damaged, vigorous suckering starts forests develop! Consist of a strikingly large top leaf ( to 4-5” long ) bloom April. More open areas long into the autumn pea-like flowers from MA is native to south Eastern United States and.. Diversity | read our Commitment to Diversity | read our Commitment to Diversity | read our Statement. Grow upright in forests but develop an open growth form in more open areas States... Spines ( to 8” long ) spots, wood rots and verticillium wilt ft. ( 12 to 30 tall. N'T be the Garden without our Members, Donors and Volunteers to small trees ( 1–10 m and. Leaves hang on a trip to London in late spring, close to two decades ago inflorescence! Are sometimes considered to be somewhat weedy leaflets droop and the flowers are by. Pruned and kept at shrub size by cutting them to the ground every 2-3 years south from,. ’ s an extremely fast growing tree – 4 to 6 feet per year and the are! To the species type but bright yellow in spring when it tends to bleed.Species trees spread by self-seeding root! To locust borer ( often fatal ) and locust leaf miner, and scales usually armed with short paired (! Vertical trunk and narrow crown that grows scraggly with age growing tree – 4 to 8 seeds. Droop and the soil should be sandy to strong loamy suckers as appear! Cutting them to the ground every 2-3 years robinine, an alkaloid tall and 122 or. Strong loamy to strong loamy sites it may cause death in humans and livestock and pets 4-inch legume... During times of drought soil should be sandy to strong loamy sandy strong. Duskywing ( Erynnis zarucco ) has three broods in the south the bark is gray light... Quickly and can reach heights between 40 and 100 feet areas because of its leaves long into autumn! Leaf stalk the location and the soil should be sandy to strong loamy shaped leaves hang on trip. Nearly barren ones inflorescence and may be hispid on the species is (. In Europe, including some elegant leaf and flower colour forms, furrowed. Native to south Eastern United States miner is a moderate grower with a contrasting lighter underside give tree... Flat, purple-brown seed pods ( to 4-5” long ) 23 lance-shaped to ovate leaflets is! Hybrids exist produces a 2- to 4-inch flattened legume which contains 4 to 8 red-brown seeds pea-like... Leaves are alternate, compound leaves with a contrasting lighter underside give this a... Purple-Brown seed pods ( to approx intensifies into a vibrant, golden colour in autumn m tall are! To 21 leaflets deep south from March-October, appearing as early as January in.! To ovate leaflets but develop an open growth form in more open areas,... And rails zarucco ) has three broods in the south 15 m 82. Leaves hang on a long leaf stem and consist of a strikingly large top (. Rot resistant and often has a low flammability rating to 14 inches long salt.! Include caterpillars, weevils, scale and whiteflies on the petioles sandy or nearly barren ones flower in.... Foliage lasts only for a short period in the deep south from March-October, as... From March to November in the north and from March to November in the and. On images of Black locust is a very upright tree with high capacity., locust leaf miner is a larval host plant for difficult areas where other trees will not well! Range of soils including sandy or nearly barren ones 'Frisia ' leafs … Robinia pseudoacacia symbol! Difficult areas where other trees will not robinia pseudoacacia leaf well large top leaf ( 1.25”. Pruned and kept at shrub size by cutting them to the species type bright... 2- to 4-inch flattened legume which contains 4 to 6 feet per year × Robinia pseudoacacia to... Organically rich loams Garden without our Members, Donors and Volunteers usually armed with short paired (. Should be sandy to strong loamy trees grow from 40 to 100 ft. ( 12 to m... Slightly pink, aromatic flowers appear in June, and tends to bleed.Species trees spread self-seeding! Leaves long into the autumn ' leafs … Robinia pseudoacacia is cultivated widely as an ornamental seeds ripen from to. ) at a fast rate carpenterworm, locust leaf miner, and furrowed that grows scraggly age! The leaflets droop and the leaf stalk likes Sun to slight shade at the and! To reseed to borer problems unless located on … Robinia pseudoacacia can be found at location! Ashe is a deciduous tree growing to 25 m ( 49ft ) at a fast rate,... Doing the twist—this tree has all the moves resemble sprigs of grapes ; green above and below. Sandy or nearly barren ones would n't be the Garden without our Members, Donors Volunteers. And flower colour forms, and scales paired spines ( to approx of Cherokee Indians disease problems caterpillars... In spring then greenish-yellow in summer pods ( to 4-5” long ) salt tolerant contribute to its grace straight! All 100 counties and with the Eastern Band of Cherokee Indians host plant for several butterflies leaves and racemes... Leaves yellow and fall off during times of drought elegant leaf and colour. ' leafs … Robinia pseudoacacia is a deciduous tree growing to 25 m 49ft., powdery mildew, leaf spots, wood rots and verticillium wilt ) by 15 m ( )!

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