We use cookies to make your experience better. To comply with the new e-Privacy directive, we need to ask for your consent to set the cookies. Learn more.
Resources
- Latin Name: Chichorium Intybus
- Latin Family Name: Asteraceae
- Common Name: Chicory
- Other Names: N/A
Origin:
Native to Europe, but now found throughout the United States, and especially abundant in the northern and western states where it is a common roadside weed.Biology:
A perennial plant that begins with a basal rosette of leaves laying prostrate, and produces numerous stems through the growing season. Basal leaves and the taproot have a white milky sap that is bitter tasting, but still the roots have been used as a substitute for coffee. The plant may be grown for human consumption, but is capable of causing allergic dermatitis in people. Propagation is from seeds.Identification:
Mature plants may be as tall as 3 feet, with a strong taproot and numerous stems. Stems are nearly devoid of leaves and- Latin Name: Trifolium Glomeratum
- Latin Family Name: Fabaceae
- Common Name: Clustered Clover
- Other Names: Bush clover
Origin:
Native to Europe, but introduced to North America where it now is found uncommonly in the southeast states as well as California, Oregon, and Hawaii.Biology:
An annual propagating from seeds. Growth habit is low and spreading, plants generally staying under 1 foot in height. Found along roadsides and other disturbed habitats, as well as in poorly managed turf.Identification:
Green leaves and reddish stems are covered with fine white hairs. The leaves are typical of clovers, with a long stem and 3 distinctly separated lobes that are wide and pointed at the tip. The flower head emerges from the leaf axils and is large and spherical, with the numerous white to pinkish flowers protruding- Latin Name: Amsinckia Intermedia
- Latin Family Name: Boraginaceae
- Common Name: Coast Fiddleneck
- Other Names: Fiddleneck, common fiddleneck, fingerweed, rancher’s fireweed, yellow burnweed, yellow burweed, yellow forgetmenot, yellow tarweed
Origin:
Coast fiddleneck is native to Oregon and California.Biology:
A winter annual – seeds germinate from November through early spring, with plants maturing in early summer and dying once hot weather arrives.Identification:
Most characteristic is the flower stalk, which is curled in the shape of the neck of a violin, giving this weed its common name. Flowers are very small, orange, and arranged in rows along the sides of the terminal stems. Leaves are 1 to 4 inches long, arranged alternately along the stems, and lance shaped and very hairy and bristly- Latin Name: Stellaria Media
- Latin Family Name: Caryophyllaceae
- Common Name: Common Chickweed
- Other Names: Starwort, starweed, winterweed, satin flower
Origin:
Introduced from Europe, and now widely distributed throughout the United States and Canada.Biology:
An annual that reproduces from seed. Weak stems grow in a creeping, vine-like manner and will root at the nodes. Plants need cool habitat, and can survive through the summer in moist, shaded locations, even behaving somewhat as a perennial.Identification:
Mature plants have numerous weak stems, and stems have a line of hairs on one side. Similar to several other species of chickweeds, but other kinds have much hairier leaves. Plants may climb into other foliage, but alone will form low mats over the ground. Leaves are spade-shaped and up to 1.5- Latin Name: Potentilla Canadensis
- Latin Family Name: Rosaceae
- Common Name: Common Cinquefoil
- Other Names: Dwarf cinquefoil, Canada dwarf cinquefoil
Origin:
A native plant found throughout the eastern third of the United States, and west to Wisconsin, Arkansas, and Texas.Biology:
A perennial weed that reproduces from seeds, but spreads by rhizomes and stolons. It is found commonly in turf and landscape, thriving best in poorly maintained conditions. It also is found along roadsides and in disturbed sites, and in meadows, wooded areas, and open fields. Many cinquefoils are sold as ornamental ground coverings, and can become invasive from the site where planted.Identification:
Mature plants are low-growing with prostrate stems and foliage. Stems are thin and tough, and branch frequently. The stems areLatin Name: Senecio Vulgaris
Common Name: Common Groundsel
Other Names: Grimsel, ragwort, Old Man in the Spring, simson, groundsel, bird-seed
Pest Details
Origin:Introduced from Europe, and now widespread in the northern United States and Canada, and as far south as Texas and throughout the western states. An extremely common winter and spring weed.
Biology:
A winter annual reproducing from seeds, and plants are capable of a heavy production of weed-blown seeds. Germination may continue throughout the spring and summer, with several generations of the weed possible in one year. Foliage and stems contain toxic alkaloids that can cause liver damage in horses and cattle, although sheep, rabbits, and goats appear resistant to the toxin.
Identification:Mature plants can grow as high as 2 feet, and may be heavily branched and with thick foliage. Stems are weak and tend to bend with the weight of the developing flower
Latin Name: Chenopodium Album
Common Name: Common Lambsquarters
Other Names: Baconweed, chou grass, fat-hen, frost-blite, mealweed, pitseed goosefoot, white goosefoot, white pigweed, wild spinach.
Pest Details
Origin:Native to Europe, and now an extremely common weed throughout the United States.
Biology:
Edible annual broadleaf plants, thus the several common names insinuating the use of this plant for food. Widespread throughout North America, lambsquarters is a problem weed in many sites of both landscape and agriculture, as well as growing easily in dry waste areas. It can be found at elevations up to 10,000 feet. Good livestock forage plant. Growth is erect, and up to 6 feet tall, with a central stem and many branches that sometimes are striped with pink or purple. Leaves are alternate on the stems. Seeds germinate from early spring through autumn, with plants maturing as early as mid-summer.
Identification:Latin Name: Malva Neglecta
Common Name: Common Mallow
Other Names: Buttonweed, cheeseplant, cheeseweed, cheeses, cheese mallow, dwarf mallow, running mallow, malice, round dock, round-leaved mallow, low mallow.
Pest Details
Origin:Native to Europe - widespread in United States.
Biology:
Broadleaf annual, biennial, or perennial in some areas. Usually an annual weed, but it may survive the winter and thereby be considered a biennial.
Identification:Mature plant bushy, well branched and spreading, from 1’ to 5’ tall. Leaves are round, with 5 to 7 shallow lobes, and alternate on the stem on stalks that are 1” to 6” long - dark green and often covered with fine hairs. Flowers on short stalks from base of leaf stalk of top of plant, small, white with pinkish tinge, 5 petals. Fruit is round and contains 10-12 kidney shaped seeds. Resembles a wheel of cheese, hence the name.
Characteristicts Important
Latin Name: Portulaca Oleracea
Common Name: Common Purslane
Other Names: Pusley, pursley, wild portulaca, pursley duckweed.
Pest Details
Origin:Naturalized from Europe, and now a common problem weed throughout the world.
Biology:
A summer annual weed with thick, fleshy stems that grow prostrate and mat-forming along the ground. Multiple stems branch out from the base in a circle, and individual plants may grow over 6 feet in diameter in landscape or thin turf areas. Plants are able easily to tolerate dry conditions, but also do well in landscape.
Identification:Mature plants are many-branched, with reddish, juicy stems. They form dense mats, with the tips of the stems turning upward, and in other foliage stems may grow upright. Leaves are small, oval to oblong, and fleshy, growing either opposite or alternate on the stems. They are smooth and shiny and have smooth edges. A thick taproot is present, with a wide-spreading
Latin Name: Ambrosia artemisiifolia
Common Name: Common Ragweed
Other Names: Wild tansy, hog-weed, bitter-weed, mayweed, hay-fever weed, blackweed, Roman wormweed, annual ragweed, low ragweed
Pest Details
Origin:Native to the eastern United States, and still most common there, but found throughout North America.
Biology:
A summer annual weed with reproduction from seed. Germination is very early in the spring when soil temperatures are still very low, and when soil temperatures go above about 86 degrees germination stops. The pollen from this plant is a very common cause of hay fever symptoms.
Identification:Mature plants are erect and well branched off of the primary stem, and stems are covered with long, rough hairs. The leaves may be hairy or nearly smooth and they are generally egg-shaped and pointed at the tip. This shape is hard to see due to the division of the leaf into leaflets, and often these leaflets