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Oriental Bittersweet Celastrus orbiculatus

Oriental Bittersweet

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A presentation by Monika Chandler, MN Department of Agriculture, on invasive oriental bittersweet in Minnesota. Created in August 2011 and shared on MyMinnesotaWoods.umn.edu

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Oriental BittersweetCelastrus orbiculatus

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Oriental bittersweet

Woody vine that climbs other vegetation such trees and structures

Thrives in a wide range of habitats, light levels, and soil types

Grows to 66’ in length Introduced as an

ornamental

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Reproduces by seed, rhizome, and stolon

Male and female plants Fruit production on

female plants Seed dispersal is

vectored by birds and other wildlife that eat the fruit containing seed.

Short-term seed viability

Biology

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Urtica/Flickr creative commons

Human vectored dispersal

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Highly invasive and damaging

Vines strangle trees, reduce light available for tree growth, and added vine weight can break trees

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American bittersweet Celastrus scandens

Native congener Occur in same habitat Oriental bittersweet

outcompetes American bittersweet

Hybrids? Cultivars

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Distinguishing bittersweets

American Oriental

Fruit capsule color

Fruit position

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Oriental bittersweet distribution

EDDMapS. 2011. Early Detection & Distribution Mapping System. The University of Georgia - Center for Invasive Species and Ecosystem Health. Available online at http://www.eddmaps.org/; last accessed August 23, 2011.

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Report infestations

Location information GPS coordinates preferred Note location for infestations on private

property without permission to access Digital photographs of the plant (whole

plant, leaf, flower, and stem) will aid identification

Call “Arrest the Pest” or 1-888-545-6684

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Management

Outreach and education Mechanical and chemical control methods

Cut and remove vines and dig roots Cut stump herbicide treatment Foliar herbicide treatment Basal bark treatment

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Contact Information

Monika Chandler, 651-201-6537

MN Dept. of Agriculture

[email protected]

http://www.mda.state.mn.us/en/plants/badplants/orientalbittersweet.aspx