Date of U.S. Introduction: 1860s . In the mid-1900s, many people promoted the use of Oriental bittersweet for its hardiness and showy fruit which contributed to its popularity as an ornamental vine. For fruit, American bittersweet needs both male and female vines and should be should be sited in full sun and pruned in early spring. Oriental bittersweet has been declared a noxious, invasive weed in many parts of the eastern U.S. The Bittersweet seeds are spread to the surrounding areas by two methods. If you like the look of vines with berries in your arrangements, you do have options. Oriental bittersweet is considered a noxious weed in Minnesota. What. According to Michigan State University Extension, Oriental bittersweet is a relative to our native bittersweet (Celastrus scandens) and has several closely linked characteristics. Its fruits are yellow-orange capsules that split open to reveal the fleshy red interior. Oriental bittersweet, Asiatic bittersweet, round-leaved bittersweet, Oriental staff vine, climbing spindle berry. The seeds remain in the bird's stomach for several weeks, which leads to the spreading of oriental bittersweet far away from its original location. Christmas becomes bittersweet indeed. To halt the spread of oriental bittersweet, significant control measures are needed. Oriental bittersweet is still widely planted and maintained as an ornamental vine, further promoting its spread. Birds eat the berries and spread the invasive plant further through their droppings. Or the seeds are carried off by birds. species. Fruit clusters are striking in appearance. Nonetheless, I won't delude myself into thinking my warning will deter any holiday decorators from going ahead with their misguided plans. On American bittersweet, the berries are clustered at the end of the stem, rather than spread out along the length of vine as in Oriental bittersweet. difference in color is the pollen color of the However, a native bittersweet species, American bittersweet (Celastrus scandens), can be mistaken for oriental bittersweet. Either the seeds drop to the ground once the membranes have split. Oriental bittersweet produces an abundance of berries. A deciduous woody vine, oriental bittersweet (Celastrus orbiculatus) can grow up to 60 feet long, with a base up to 6 inches in diameter. Introduced into the U.S. in the 1860s as an ornamental plant, oriental bittersweet is often associated with old homesites, from which it has escaped into surrounding natural areas. Means of Introduction: Introduced as an ornamental and for erosion control . Unknowingly, the decorator has just become an “accessory” to the spread of this prolific and invasive plant. Its attractive feature is its autumn fruit, a yellow-orange three-lobed capsule with showy orange-red seeds. Oriental bittersweet (Celastrus orbiculatus) is an invasive non-native vine that can kill or damage trees and shrubs. Oriental Bittersweet. Oriental bittersweet has since spread throughout the temperate eastern US and Canada. Native To: Eastern Asia . ... Each bittersweet fruit holds 1 to 2 seeds. Description. Although American bittersweet is also a vine and climbs on nearby vegetation, it So if you are fit and would like to join the eradication efforts, or report a siting of Oriental Bittersweet, call 507-457-6574 or email weeds@co.houston.mn.us to receive more information. American bittersweet is a climbing vine that twines around its support. The Problem. Oriental Bittersweet vines are left unrestrained, consume your entire yard.
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