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Twenty Most Invasive Plant Species

Last edited February 24, 2003
From Invasive Plant Council of New York State (IPCNYS)

Note: This list is is in order by common name, not by order of importance.

1. Black Locust - Robinia pseudoacacia
2. Black Swallow-worts - Cynanchum species: C. nigrum and C. rossicum
3. Buckthorn Species: Common buckthorn - Rhamnus cathartica, Smooth buckthorn - Rhamnus frangula
4. Common Reed - Phragmites australis
5. Curly Pondweed - Potamogeton crispus
6. Elaeagnus Species: Autumn olive - E. umbellata, Russian olive - E. angustifolia
7. Eurasian Water Milfoil - Myriophyllum spicatum
8. Garlic Mustard - Alliaria petiolata
9. Honeysuckles (non-native shrub species), including: Fly honeysuckle - Lonicera morrowii, Tartarian honeysuckle - Lonicera tatarica
10. Japanese Barberry - Berberis thunbergii
11. Japanese Honeysuckle - Lonicera japonica
12. Japanese Knotweed - Polygonum cuspidatum
13. Japanese Stilt Grass - Microstegium vimineum
14. Multiflora Rose - Rosa multiflora
15. Norway Maple - Acer platanoides
16. Oriental Bittersweet - Celastrus orbiculatus
17. Porcelain-berry - Ampelopsis brevipedunculata
18. Purple Loosestrife - Lythrum salicaria
19. Spotted or Bushy Knapweed - Centaurea maculosa
20. Water Chestnut - Trapa natans