1. Gorse

    Ulex europaeus Gorse - A thorny perennial shrub that closely resembles Scotch Broom and can grow to be 10+ feet tall.Leaves: Leaves are small, dark green and trifoliate — having 3 thin leaflets. As they mature, they become spiny. The leaf axils also have spines.Flowers: Flowers bloom April - September. Bright yellow pea-like flowers form clusters near branch terminals.Habitat: Can grow in most habitats, but is especially prevalent in coastal environments.Weed Classification: B DesignateWhy is it a Noxious Weed? Aside from "noxious" growth habits, gorse also creates large physical barriers and poses significant wildfire risk due to the concentration of …


    Weed Control - Sept. 29, 2022, 9:47 a.m.

  2. Poison Hemlock

    Conium maculatum Poison Hemlock - Very tall biennial that can grow up to around 12 feet in height. Stems will have purple splotches that help with identification.Leaves: Leaves are fern-like, toothed and finely divided. Look very similar to wild carrot leaves.Flowers: Flowers bloom from April-August. Flowers are small, white, and occur in 4–8-inch umbrella-shaped clusters.Habitat: Plant is highly adaptive, but prefers rich, moist soil.Weed Classification: B SelectWhy is it a Noxious Weed?The entire plant is toxic to animals and humans. Contains poisonous alkaloids, such as coniine. Poison Hemlock can spread quickly and infest large areas.Poison Hemlock should not be burned, …


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

  3. Oxeye Daisy

    Leucanthemum vulgare Oxeye Daisy - A perennial, herbaceous plant growing 1-3 feet tall.Leaves: Leaves are alternate and lance-shaped, with toothed or lobed edges.Flowers: Flowers bloom from May-October. Single flowerhead at the end of the stem. It has many white ray-flowers, creating the "petals," and yellow disc-flowers in the middle.Habitat: Found in grasslands, overgrazed pastures, waste areas, meadows, roadsides, railroad ROWs, yards, and fields.Weed Classification: CWhy is it a Noxious Weed?It can aggressively invade fields and decrease plant diversity. It decreases crop yield and has rhizomes with adventitious roots.Oxeye Daisy is very common in Lewis County. It can be hard to …


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

  4. Common fennel

    Foeniculum vulgare Common Fennel - A large perennial herb that grows to be about 6' tall, smells strongly of licorice, and spreads via seeds and pieces of the root crown.Leaves: Dark green or bronze feather-like, deeply lobed and somewhat spindly, the leaves are completely hairless and attachment points (petioles) are fleshy with a wide base.Flowers: In bloom from May to September, the small yellow flowers form an umbrella shaped cluster (umbel) and resemble those of poison hemlock and wild chervil.Habitat: Can establish in just about any habitat from roadsides, to prairies, to coastal bluffs, to wetland areas.Weed Classification: B DesignateWhy …


    Weed Control - Sept. 29, 2022, 9:46 a.m.

  5. Milk Thistle

    Silybum marianum Milk Thistle - A large, sparsely branched thistle growing up to 6 feet tall. Easy to identify, due to the leaf patterning.Leaves: Alternate, deeply lobed, and pointed leaves. Leaves have a very noticeable white and dark green marbling. The basal leaves can get up to 20 inches long and 10 inches wide.Flowers: Flowers bloom from May-August. Rounded cluster of tubular flowers that have spine-tipped bracts (scales) around it.Habitat: Occurs in many places such as: overgrazed pastures, roadsides, waste areas, ditches, and disturbed areas.Weed Classification: AWhy is it a Noxious Weed?It is an aggressive invader that can grow into …


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

  6. Rush Skeletonweed

    Chondrilla juncea Rush Skeletonweed - A perennial that grows 1-5 feet tall. It has a long slender taproot that can grow 7 feet in length.Leaves: Basal leaves are lobed and slightly curved towards the leaf base. The stems have very few leaves that are smaller and have smooth edges.Flowers: Flowers bloom from July-September. Flowers consist of many yellow ray flowers and are either single or clustered. They are about 1/2 inch in diameter with green bracts (scales) underneath.Habitat: Can be found in pastures, rangeland, cropland, roadsides, open and disturbed areas.Weed Classification: B DesignateWhy is it a Noxious Weed?Rush Skeletonweed can …


    Weed Control - Oct. 5, 2022, 3:36 p.m.

  7. Field Bindweed

    Convolvulus arvensis Field Bindweed - An herbaceous perennial with extensive rhizomes that help it creep through fields and over plants.Leaves: Arrowhead-shaped leaves that alternate along the stem. Leaves have two lobes at the base.Flowers: Flowers bloom from April-October. Flowers are bell or funnel-shaped and are about 1 inch across. They range from white-pink and have bracts (scales) where the flower stem meets the plant stem.Habitat: It grows anywhere from full sun to full shade and is drought tolerant. Found in ravines, greenbelts, forested parks, farmlands, driveways, flower gardens, and ornamental bordersWeed Classification: CWhy is it a Noxious Weed?Once established it …


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

  8. European Coltsfoot

    Tussilago farfara European Coltsfoot - a rhizomatous perennial that forms intricate colonies and grows up to 18" tall.Flower: Flowers bloom from March - May. The solid yellow flower looks somewhat like a dandelion, but on a stem absent of any basal leaves. The stems are unbranched and each produces a single flower.Leaves: Basal leaves emerge after flowers begin going to seed. They vary in size from 2-12" and grow from the rhizomes in rosettes. They also have a big variation in size and can be heart shaped, orbicular, or triangular, and have a narrow indentation at the base. The margins …


    Weed Control - Sept. 29, 2022, 9:45 a.m.

  9. Hydrilla

    Hydrilla verticillata Hydrilla- Very similar in appearance to our native elodea (Elodea canadensis) and to Class B noxious weed Brazilian elodea (Egeria densa), this aquatic perennial is especially problematic in waterways and attempts to mechanically control will often perpetuate its spread.Hydrilla vs Native Elodea fact sheet from the New Jersey Water Supply AuthorityLeaves: Whorled formation of 3-10 (but most often 5) leaves with sharply toothed margins. There are often spines along the reddish midrib giving the plant a "velcro" feeling when pulled.Flowers: Transparent to white, female flowers with petals of 3 are attached to the stem tip by a slender …


    Weed Control - Sept. 26, 2022, 1:13 p.m.

  10. Yellow Archangel

    Lamiastrum galeobdolon Yellow Archangel - Evergreen to semi evergreen plant that grows very quickly. It is mostly a trailing perennial, though it can grow upright if climbing other plants.Leaves: Opposite and oval shaped. Toothed and hairy typically with silver-gray markings.Flowers: Flowers bloom from April through June. Flowers are small, yellow, and two lipped. The upper lip is hooded, and the lower lip has orange/brown markings. Flowers grow in whorls.Habitat: Yellow Archangel can grow in shade or sunlight. Can sometimes escape people's landscaping into nearby forests, greenbelts, and riparian habitats.Weed Classification: B SelectWhy is it a Noxious Weed?Escapes easily from gardens …


    Weed Control - Sept. 29, 2022, 9:49 a.m.