1. Weed Identification

    Successful weed management starts with proper identification What is it? Is it noxious? Is it native? Is it poisonous? Is it even a weed?Weeds can fall under many different categories, and sometimes the same weed can be many of these at once! The first step in successful weed management is accurate identification and understanding of its life cycle. We are available to identify weeds both in the office and on site. There are also numerous resources online to help identify the weed in question, along with descriptions of feasible control options and methods, here are a few of our favorites:Washington …


    Weed Control - Sept. 27, 2019, 12:57 p.m.

  2. Info on Weed Species

    "Which list is which?" Every year, the Washington State Weed Board adopts a noxious weed list, which goes into effect on the first of January. In the following months, meaning the early months of each year, the Lewis County Noxious Weed Control Board adopts its own, county-level, weed list. This list includes a number of Class A and B-Designate noxious weeds that are received by the county as orders from the state, and are required for control. In addition, the county Weed Board also has the option to select additional Class B & C weeds to the list that are …


    Weed Control - Jan. 11, 2012, 8:50 a.m.

  3. Noxious Weed Board

    Mission Statement:It is the mission of the Noxious Weed Board to serve as responsible stewards of Lewis County land and agriculture, and to protect and preserve our ecological resources against the harms of noxious weeds. We endeavor to develop programs that reflect local priorities, meet the needs of county landowners and residents, and carry out the mandate of the Washington State noxious weed law, the RCW 17.10. The county Noxious Weed Control Program provides consultation on weed prevention strategies, educational programming, technical assistance, enforcement actions, and a variety of other resources to help control or eradicate noxious weeds in our …


    Weed Control - Jan. 23, 2019, 4:12 p.m.

  4. Blackberry (Himalayan & Cutleaf)

    Rubus armeniacus & Rubus laciniatus Himalayan Blackberry Himalayan Blackberry Cutleaf Blackberry Cutleaf Blackberry Himalayan Blackberry - A rambling, evergreen, perennial, woody shrub with stout, hook-thorned stems.Leaves: Leaves are palmately compounded with 3-5 leaflets (5 is most common). Leaves have slightly toothed margins.Flowers: Flowers bloom from May-August. Flower clusters generally have between 5-20 flowers that have 5 petals and are white to rose in color.Habitat: Grows in a variety of habitats including forests, roadsides, railroad tracks, logged lands, field margins, and riparian areas.Weed Classification: CWhy is it a Noxious Weed?Himalayan Blackberry is very hard to control after a serious infestation has …


    Weed Control - Oct. 6, 2022, 9:32 a.m.

  5. Yellowflag Iris

    Iris pseudacorus Yellowflag Iris - A perennial, herbaceous, aquatic plant, growing 2-3 feet in height.Leaves: Basal leaves are sword shaped and larger than the leaves found higher up the stem.Flowers: There can be few or many flowers near the tip of the stems. Flowers are white-dark yellow with purple markings. There are 3 petals and 3 sepals.Habitat: Most commonly found growing in very shallow water or mud. It can also grow along lake shores and slow-moving rivers. It tolerates a variety of conditions.Weed Classification: C SelectWhy is it a Noxious weed?It is an ornamental that has become a nuisance in …


    Weed Control - Oct. 6, 2022, 11:46 a.m.

  6. Canada Thistle

    Cirsium arvense Canada Thistle - A rhizomatous, perennial, herbaceous plant that grows 2-5 feet tall, usually branching only near the top of the plant.Leaves: Leaves are alternate and lance to narrowly oval in shape, possessing short spines along the leaf edges.Flowers: Flowers bloom from May-October. Many flowerheads clustered towards the tip of the stem, purple to pink in color.Habitat: Common in pastures and croplands. Can also invade wet areas as well like steam banks, sedge meadows, and wet prairies.Weed Classification: C SelectWhy is it a Noxious Weed?Once established, it can spread vigorously and replaces native plants. It also lowers crop …


    Weed Control - Oct. 6, 2022, 9:32 a.m.

  7. Reed Canary Grass

    Phalaris arundinacea Reed Canarygrass - A highly variable perennial plant, with rhizomes. Grows 3-6 feet in height.Leaves: Leaf blades are flat and smooth. The leaf has a wide connecting point to the stem.Flowers: Flowers bloom from June-July. Densely clustered flowers in panicles. 3 florets per spikelet and only one fertile spikelet. Flowers start out green-purple and change to tan/brown overtime.Habitat: Usually grows where ground is at least somewhat saturated during growing season. Habitats include: roadside ditches, river dikes, shallow marshes, wetlands, and meadows.Weed Classification: CWhy is it a Noxious Weed?A major threat to wetlands due to its aggressive nature. It …


    Weed Control - Oct. 6, 2022, 9:33 a.m.

  8. Enlgish Ivy & Old Man's Beard

    Hedera helix & Clematis vitalba English Ivy - Evergreen, perennial vine that can grow up trees and bushes or spread freely along the ground. Can grow 99 feet and the young plants can anchor to vertical surfaces.Leaves: Dark green, waxy leaves that are alternate along the stem. Young leaves are deeply lobed while older leaves are diamond to oval shaped.Flowers: Flowers bloom from May-June. Only older plants flower and that can take up to 10 years. The flowers are greenish white and form umbrella-like clusters.Habitat: Commonly found in woodlands, forest edges, riparian areas, fields, hedgerows, coastal areas, and disturbed habitats. …


    Weed Control - Oct. 6, 2022, 9:33 a.m.

  9. Italian Arum

    Arum italicum Italian Arum - Perennial, herbaceous plant that grows from tubers. Multiple tubers will be produced during growing season.Leaves: Leaves emerge in the fall-winter and will die back in the summer. Leaves are arrowhead-shaped, green, and possibly has cream or silver-gray colored veins and markings. Young leaves are generally more oval in shape.Flowers: Flowers bloom from April-June. Made up of a spathe and spadix, and grow into many red-orange berries in a cluster.Habitat: Normally found in forest understudies, riparian areas, wetlands, old gardens, woodland gardens, and disturbed areas near urban developments.Weed Classification: CWhy is it a Noxious Weed?It is …


    Weed Control - Oct. 6, 2022, 9:33 a.m.

  10. Common Catsear

    Hypochaeris radicata Common Catsear - A perennial with a basal rosette of leaves, followed by upright/slightly bent stems that are usually leafless in its second year.Leaves: Leaves are rough and hairy, with lobed or waxy margins. Leaves can be 1.2-13.8 inches long and .2-2.8 inches wide.Flowers: Flowers bloom from May-October. Dandelion-like flowers that are yellow and disc like and are 1-1.5 inches across.Habitat: Common Catsear grows in disturbed areas, such as yards, roadsides, pastures, waste areas, gardens, and seed fields.Weed Classification: CWhy is it a Noxious Weed?It is a potentially poisonous, aggressively spreading plant that invades lawns and lowland pastures. …


    Weed Control - Oct. 6, 2022, 9:32 a.m.