Phone: 503-823-7740
Fax: 503-823-6995
1120 SW 5th Ave, Suite 613, Portland, OR 97204
Required Eradication List
Required Plant Eradication List
Requirements took effect July 1, 2010
Fact Sheet
Summary of requirements
1. Russian Knapweed
Acroptilon repens
2. False-brome
Brachypodium sylvaticum
3. Italian Thistle or Slender Flowered Thistle
Carduus pycnocephalus and Carduus tenuiflorus
4. Jubata Grass
Cortaderia jubata
5. Paterson's Curse
Echium plantagineum
6. Giant Hogweed
Heracleum mantegazzianum
7. Orange Hawkweed
Hieracium aurantiacum
8. Meadow Hawkweed (formerly listed as Yellow Hawkweed)
Hieracium pratense (H. cespitosum)
9. Policeman's Helmet
Impatiens glandulifera
10. Scotch Thistle
Onopordum acanthium
11. Common Reed
Phragmites australis (introduced variation only)
12. Kudzu
Pueraria lobata
13. Blessed Milk Thistle
Silybum marianum
14. Saltcedar
Tamarix ramosissima
15. Gorse
Ulex europaeus