Part 4 <br />NON-NATIVE, INVASIVE PLANT SPECIES KNOWN OR LIKELY TO OCCUR WITHIN THE <br />EUGENE URBAN GROWTH BOUNDARY <br />The plant species included in this list are species that have been deliberately or accidentally imported <br />or introduced from other areas by humans or human activities. In addition, these species escape from <br />cultivated settings and spread aggressively into natural areas, and are capable of displacing large areas <br />of native vegetation. These non-native, invasive plant species are distinguished from those native <br />species that grow and propagate themselves in the Eugene area through natural processes, are adapted <br />to the weather, soils and hydrology of the area, and have evolved in the area or been introduced to the <br />area by natural causes. <br />This list applies to all habitat types within the Eugene Urban Growth Boundary. To meet Eugene Code <br />requirements for removal of non-native, invasive plants, you must remove the specific species, <br />subspecies or variety listed. <br />Scientific Common <br />Name Name <br />Notes <br />Reference <br />Acer <br />Norway maple Invasive tree spreading into forested natural areas <br />1 <br />platanoides <br />around town including Skinner's Butte. <br />Aesculus <br />horsechestnut Populations have been found in south end of <br />1 <br />hippocastanum <br />Hendricks Park and this species is known to be <br />problematic in other cities. <br />Ailanthus <br />tree -of -heaven Invasive tree that is problematic in City parks, alleys, <br />1,3 <br />altissima <br />and undeveloped property. This species is capable of <br />becoming established through cracks in concrete. <br />Alliaria <br />garlic mustard One of the most invasive forest under story plants in <br />19 4 <br />petiolata <br />the east and Midwest, starting to establish in the <br />Seattle area. Documented as present in Portland and <br />Eugene <br />Anchusa azurea <br />anchusa; Exploding in large patches roadside and in woods in <br />1, 3 <br />common western Benton County. Also known recently from <br />bugloss Lane and Clackamas counties. <br />Arum italicum <br />Arum While it appears to be moved primarily by humans, it <br />1 <br />occasionally is found away from human activity areas. <br />Once established, it is extremely difficult to remove. <br />Betula <br />European birch This species is spreading rapidly along waterways and <br />5 <br />pendula/pubesc <br />is now established along the entirety of Amazon <br />Creek from near its headwaters to Fern Ridge <br />Exhibit F to Ordinance No. 20351 Page 16 <br />