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A noxious weed, harmful weed or injurious weed is a weed that has been designated by an agricultural or other governing authority as a plant that is harmful to agricultural or horticultural crops, natural habitats or ecosystems, or humans or livestock. Most noxious weeds have been introduced into an ecosystem by ignorance, mismanagement, or ...
All parts of these plants are toxic, due to the presence of alkaloids. Grazing animals, such as sheep and cattle, may be affected and human fatalities have occurred. [106] Delphinium spp. larkspur Ranunculaceae: Contains the alkaloid delsoline. Young plants and seeds are poisonous, causing nausea, muscle twitches, paralysis, and often death.
Goatsrue is a noxious weed that has a low distribution in Washington, but is on Washington’s quarantine list due to its fatal symptoms. If any part of the weed is ingested it can be fatal, and ...
The damage they do results both from the direct injury they cause to the plants and from the indirect consequences of the fungal, bacterial or viral infections they transmit. Plants have their own defences against these attacks but these may be overwhelmed, especially in habitats where the plants are already stressed, or where the pests have ...
They can be found growing in any of the following forms, all having woody stems: as a climbing vine that grows on trees or some other support; as a shrub up to 1.2 metres (4 feet) tall; as a trailing vine that is 10–25 centimetres (4–10 inches) tall; The deciduous leaves of T. radicans are trifoliate with three almond-shaped leaflets. [5]
Plants can cause reactions ranging from laminitis (found in horses bedded on shavings from black walnut trees), anemia, kidney disease and kidney failure (from eating the wilted leaves of red maples), to cyanide poisoning (from the ingestion of plant matter from members of the genus Prunus) and other symptoms.
Locoweed (also crazyweed and loco) is a common name in North America for any plant that produces swainsonine, an alkaloid harmful to livestock.Worldwide, swainsonine is produced by a small number of species, most of them in three genera of the flowering plant family Fabaceae: Oxytropis and Astragalus in North America, [1] and Swainsona in Australia.
"Foods like fatty or salted meats, gravy, and anything sugary or chocolate-based are harmful to birds," adds Richard. "In addition to this, "too much salt can cause dehydration, and sugar can ...