1. Giant Hogweed

    Heracleum mantegazzianum Giant Hogweed - A perennial, or sometimes biennial, plant capable of growing 15-20 feet tall. Stout dark reddish-purple splotched stems and leaf stalks.Leaves: Leaves can grow up to 5 feet wide, and they are deeply cut/lobed and sharply toothed edges.Flowers: Flowers bloom from June-August. Flower clusters can grow 2.5 feet wide and are umbrella shaped with many small white flowers.Habitat: Can grow in a variety of habitats, but primarily found along roadsides, rights-of-way, vacant lots, streams, and rivers.Weed Classification: AWhy is it a Noxious Weed?Due to the plant's height, it forms dense canopies that outcompete native species. Plants …


    Weed Control - Sept. 29, 2022, 10:57 a.m.

  2. Stewardship Incentive Program

    Introductory materials, offering all the details you need to navigate the process, can be found here:2026 SIP Program: IntroductionPlease review these instructions in their entirety.To apply: 2026 SIP ApplicationPlease complete the form to the best of your ability and submit it back to us via email or paper mail.Our mailing address is: 351 NW North St., Chehalis WA 98532Our office email is weeds@lewiscountywa.govThe SIP's Pesticide License Reimbursement application can be found here:2025 SIP Pesticide License Reimbursement ApplicationResidents may participate in both aspects of the program simultaneously. Acceptance into one will not negatively affect the application status for the other.Note: A …


    Weed Control - March 1, 2023, 4:28 p.m.

  3. Brazilian Elodea

    Egeria densa Brazilian Elodea - Also known as Brazilian Waterweed, its a fully submerged ornamental that is used primarily in fish aquariums.Leaves: Lower leaves grow in a whorled formation and typically consist of 4 leaves per whorl. Upper portions of stem often appear more dense than the base. Color can vary from bright to dark green depending on light availability, time of year and growing conditions.Flowers: Small white flowers with 3 petals and yellow center, on thread-like stems will often breech the water's surface when in bloom. Blooms in summer.Habitat: Can infest the beds of freshwater lakes or rivers or …


    Weed Control - Sept. 26, 2022, 11:01 a.m.

  4. Hoary alyssum

    Berteroa incana Hoary Alyssum - Plant is usually silvery-gray in appearance due to stellate hairs. 1-3.5 feet tall and functions as an upright annual, biennial, or short-lived perennial.Leaves: Plant has basal leaves that are larger and oblanceolate. Leaves gradually reduce in size moving up the stem with alternate leaf arrangement.Flowers: Blooming from May-August. Flowers bloom from the bottom up in simple or branches clusters. Petals are white and are two times longer than sepals and are deeply cleft. 6 stamens per flower.Habitat: Plant is adapted to dry conditions. Usually is found in overgrazed pastures, stressed meadows, roadsides, and waste areas. …


    Weed Control - Sept. 29, 2022, 9:48 a.m.

  5. Garlic Mustard

    Alliaria petiolata Garlic Mustard - A biennial to short-lived perennial plant. Plant smells of garlic and can grow to around 3 feet in height.Leaves: Basal leaves have rounded tips and are kidney shaped. Upper leaves are alternate and triangular in shape. Both types of leaves have leaf stems and are coarsely toothed. New leaves smell the most of garlic.Flowers: Flowers bloom from April-June. Flowers have 4 petals, 4 sepals, and 6 stamens. Petals are white and about twice as long as the sepals.Habitat: In Washington it grows in forested understory areas like urban parks, roadsides, trails, railroad tracks, streambanks, fields, …


    Weed Control - Sept. 29, 2022, 10:57 a.m.

  6. Contact Noxious Weed Control


    Weed Control - Jan. 28, 2019, 11:08 a.m.

  7. Board Decisions

    2024 Board Orders for taxes payable in 20252023 Board Orders for taxes payable in 20242022 Board Orders for taxes payable in 20232021 Board Orders for taxes payable in 20222020 Board Orders for taxes payable in 20212019 Board Orders for taxes payable in 20202018 Board Orders for taxes payable in 20192017 Board Orders for taxes payable in 20182016 Board Orders for taxes payable in 2017


    Commissioners - Nov. 3, 2016, 3:23 p.m.

  8. Eurasian Watermilfoil

    Myriophyllum spicatum Eurasian Watermilfoil- a fully submerged escaped ornamental perennial that readily alters aquatic ecosystems by multiplying quickly and blocking sun with dense "floating" mats.Leaves: Feather-like leaves occur in whorls of 4 on a red stem. Each leaf can have 12+ leaflet pairs.Flowers: Tiny pink-reddish flowers appear as terminal spikes. Male and female flowers appear on the same plant.Habitat: Highly adaptable to any freshwater body including streams, rivers, ponds, lakes and ditches. Has been found as deep as 10 meters.Classification: B SelectThis aquatic weed is confirmed to be present in Carlisle lake, Riffe & Mayfield lakes (and the downstream portions …


    Weed Control - Sept. 26, 2022, 11:01 a.m.

  9. Solid Waste Utility

    Lewis County Solid Waste Utility operates solid waste transfer stations in Centralia and Morton for disposal, recycling, and yard waste drop off, and provides education and outreach regarding proper solid waste management, waste reduction, recycling, composting and hazardous waste.


    Solid Waste - Jan. 23, 2019, 4:16 p.m.

  10. Winlock Community Recycle Event helps residents clean up

    Community Recycle Event at the old Winlock Drop Box, 1105 Winlock-Vader Road, Winlock, from 10 a.m. to 2 p.m.Satellite Household Hazardous Waste Collection Event: Residential customers may drop off their unwanted or leftover cleaners, aerosol cans, lawn, garden, pool chemicals, and other household chemicals. Please be prepared to leave your containers at the event. Workers don't have a place to empty them, and return them to customers at satellite events. Limits for these events are 5 gallons motor oil, 5 gallons antifreeze, 5 gallons cooking oil, and no containers larger than 5 gallons. No paint or PaintCare items (Please check …


    Solid Waste - June 9, 2025, 10:49 a.m.