oriental bittersweet celastrus orbiculatus

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Minnesota First Detectors Oriental Bittersweet Celastrus orbiculatus

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Oriental Bittersweet Celastrus orbiculatus. 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. Biology. - PowerPoint PPT Presentation

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Page 1: Oriental Bittersweet Celastrus orbiculatus

Minnesota First Detectors

Oriental BittersweetCelastrus orbiculatus

Page 2: Oriental Bittersweet Celastrus orbiculatus

Minnesota First Detectors

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

Page 3: Oriental Bittersweet Celastrus orbiculatus

Minnesota First Detectors

Reproduces by seed, rhizome, and stolon

Male and female plants Fruit production on

female plants Short-term seed viability

Biology

Page 4: Oriental Bittersweet Celastrus orbiculatus

Minnesota First Detectors

Urtica/Flickr creative commons

Wildlife vectored dispersal

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

http://gremlinthecat.blogspot.com/2010_12_01_archive.html

Page 5: Oriental Bittersweet Celastrus orbiculatus

Minnesota First Detectors

Urtica/Flickr creative commons

Human vectored dispersal

Page 6: Oriental Bittersweet Celastrus orbiculatus

Minnesota First Detectors

Page 7: Oriental Bittersweet Celastrus orbiculatus

Minnesota First Detectors

Highly invasive and damaging

Trees strangled, smothered and broken by vines

Reduced light available for plant growth

Page 8: Oriental Bittersweet Celastrus orbiculatus

Minnesota First Detectors

Page 9: Oriental Bittersweet Celastrus orbiculatus

Minnesota First Detectors

Page 10: Oriental Bittersweet Celastrus orbiculatus

Minnesota First Detectors

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Minnesota First Detectors

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Minnesota First Detectors

American bittersweet Celastrus scandens

Native related species Occur in same habitat Oriental bittersweet

outcompetes American bittersweet

Hybrids? Cultivars

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Minnesota First Detectors

Page 14: Oriental Bittersweet Celastrus orbiculatus

Minnesota First Detectors

Distinguishing bittersweets

American Oriental

Fruit capsule color

Page 15: Oriental Bittersweet Celastrus orbiculatus

Minnesota First Detectors

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Minnesota First Detectors

Variable leaf shape = not reliable

Page 17: Oriental Bittersweet Celastrus orbiculatus

Minnesota First Detectors

Other woody vines

Page 18: Oriental Bittersweet Celastrus orbiculatus

Minnesota First Detectors

Which is Oriental bittersweet?

75%

25% 1. Plant 12. Plant 2

1 2

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Minnesota First Detectors

Control methods

Foliar application Low growing plants, seedlings and re-

sprouting cut stumps Cut stump and basal bark treatments

Large vines

Page 20: Oriental Bittersweet Celastrus orbiculatus

Minnesota First Detectors

Oriental bittersweet distribution

EDDMapS. 2014. 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 February 12, 2014.

Page 21: Oriental Bittersweet Celastrus orbiculatus

Minnesota First Detectors

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Minnesota First Detectors

Report infestations

1. Location information1. GPS coordinates preferred when access is

permissible2. Note location for infestations on private

property without permission to access2. Digital photographs of the vine and fruit or

flowers will aid identification3. Call “Arrest the Pest” 888-545-6684

Page 23: Oriental Bittersweet Celastrus orbiculatus

Minnesota First Detectors

Legal status in Minnesota

Prohibited Noxious Weed on Eradicate List All plant parts must be destroyed No propagation or sale is allowed

Cultivars Prohibited Oriental bittersweet cultivars

Diana, Hercules, Indian Mix, Indian Brave, Indian Maiden Approved American bittersweet cultivars

Autumn Revolution and Sweet Tangerine ‘Swtazam’

Page 24: Oriental Bittersweet Celastrus orbiculatus

Minnesota First Detectors

Infestations in Minnesota

Goal is to prevent new infestations and contain and control existing infestations. Small, manageable infestations should be controlled

by landowners MnDOT and DNR have destroyed multiple small

infestations and are monitoring seedbanks. Coordinated initial control of large Oriental

bittersweet infestations across land ownship boundaries was recommended for funding by the Legislative Citizens Commission on Minnesota Resources

Page 25: Oriental Bittersweet Celastrus orbiculatus

Minnesota First Detectors

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

Questions?