1305M325R0009_PWS_A4b.pdf

This file appears to be Attachment 4b, which is an informational document about Garden Loosestrife (Lysimachia vulgaris) produced by the King County Noxious Weed Control Program. It provides details about a Class B Noxious Weed that requires control.

The document includes identification tips, biology, impacts, distribution, and control methods for Garden Loosestrife. The plant is described as having bright yellow flowers, growing 3-6 feet tall, with rhizomes up to 15 feet long. It primarily affects shorelines and wetlands in the Lake Sammamish, Lake Washington, and Sammamish River areas. Control methods detailed include manual removal, mechanical control using black plastic or landscaping fabric, and chemical control using aquatic herbicides like glyphosate or triclopyr with proper permits. The document appears to be included as part of the landscaping services solicitation for NOAA's Montlake Laboratory to inform contractors about noxious weed control requirements.