When growing in sandy areas this plant can enrich the soil by means of its nitrogen-fixing nodules, allowing other species to move in.  This tree tolerates a soil pH range of 4.6 to 8.2. It is a very upright tree with a straight trunk and narrow crown that grows scraggly with age. Native to the Eastern United State, I always look for this tree to bloom in the spring as a sign that “honeyflow” or “nectarflow” is starting for my honeybees. 'Unifoliola', a plant with fewer leaflets, no prickles, and a shorter height. • The ornamental fruit pods last through winter. Cultivars may also be grafted as this ensures the parent and daughter plant will be genetically identical. It has thick black bark. It grows as much as 20 feet in the first 10 years and can eventually grow 70 feet high. The long, dull winter is finally over, the grass is finally green, and the irises and black locust trees (Robinia pseudoacacia) are blooming.I want to do nothing but feast my eyes on the colorful irises and breathe in the sweet smell of the locust flowers all day long. Although these bees are normally solitary, you can see many during the blooming. Flavonoids in the heartwood allow the wood to last over 100 years in soil.. The thorns of black locust trees are short, when compared to that of honey locusts. Unlike many fast-growing trees, though, the honey locust does not have invasive roots or weak wood. Although the bark and leaves are toxic, various reports suggest that the seeds and the young pods of the black locust are edible. After 140 growing days, the black Locust tree flowers begin to bloom. As a beekeeper, I am particularly drawn to black locust trees because of the wonderful honey they produce. It is a long-lived tree that tolerates wind storms and ice. Foliage – deciduous Flowering – June Fruit formation – summer. This fast-growing native tree can form colonies and has brittle wood. In the early summer black locust flowers; the flowers are large and appear in large, intensely fragrant clusters reminiscent of orange blossoms. Can You Sterilize a Tree? Sunny flowering black locust tree on a clear blue sky in Bourgoyen nature reserve, Ghent, Flanders, Belgiul. Sign up to get all the latest gardening tips! Skyline Honey Locust. Trees go through a cycle of buildup over 3 or so years with a massive bloom and subsequent large seedcrop in the peak year.. Identifying species of locust trees can be done by features such as their … ... New trees may not bloom for the first 8-10 years. This … This heavy seedcrop will usually throw a poor bloom the next year as the tree starts the cycle again. In France, Italy and Romania, R. pseudoacacia flowers are eaten as beignets after being coated in batter and fried in oil; they are also eaten in Japan, largely as tempura. The bark of younger black locust trees is colored lighter brown. Black Locust blooms prolifically although not every year. Flowering starts after 140 growing degree days. The tree rarely, if ever, needs nitrogen fertilizer because of its ability to fix nitrogen from the air.  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. Black Locust, False Acacia or Robinia pseudoacacia blooming close-up, selective focus, shallow DOF. When a locust tree contracts the disease, the wood will turn a yellow-brown color at the central core of the tree. The black locust (Robinia pseudoacacia) is a woody member of the pea family (Fabaceae or Leguminosae), and a close examination of its winged flowers, bean-like pods, and pinnately compound leaves will make the relation obvious to any gardener. Last week the honey locust trees began to bloom. The black locust doesn't compete well with other trees and isn't a big fan of shade, but it's nevertheless a resilient species. , Black locust is a major honey plant in the eastern US, and has been planted in European countries. Although black locust does have these pest problems, with the exception of internal decay (Phellinus robineae), they seldom kill the tree. 6 Replies to “The perfume of flowering Black Locust” Liam J Moore says: June 29, 2011 at 10:49 am I share your sentiments Jessica. I have 2 big ones at my place and several around us, some of them very big. Shelled seeds are safe to harvest from summer through fall, and are edible both raw and/or boiled. This page was last edited on 2 December 2020, at 15:37. I love my Black Locust groves. The toxins rapidly attack the central nervous system and the gastrointestinal system. Young trees grow quickly and vigorously for a number of years, but soon become stunted and diseased, and rarely live long enough to attain any commercial value. • Showy yellow flowers grace what is one of the few mid-summer blooming trees. Suggested Use: Shade Tree, Flowering Tree Flower: Showy, Fragrant Leaf: Good Fall. Black locust has nitrogen-fixing bacteria on its root system, so it can grow on poor soils and is an early colonizer of disturbed areas. Black locust is a shade-intolerant species and therefore is typical of young woodlands and disturbed areas where sunlight is plentiful and the soil is dry. This highly ornamental tree has bright yellow to chartreuse foliage that holds its color well. Growing locust trees is easy and they adapt well to lawn and street conditions. 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