Thick mats of this plant can slow water flow, impede boat traffic, and … Header photo . New plants grow from fragments of already rooted plants. Parrot's Feather Myriophyllum aquaticum . Parrot´s feather, AKA Milfoil, is a very distinctive looking plant that can grow up to 30cm above the water’s surface, and up to 2m below. For brief control information, see Efficacy of Herbicide Active Ingredients Against Aquatic Weeds (EDIS Pub #SS-AGR-44) Description. Identification. Download the Invasive Species Council of BC's Factsheet for Parrots Feather here. It is a popular plant in aquatic gardens . Reproduction: Parrot feather reproduces asexually. Widely Spread Species: Under Article 19 of Invasive Alien Species Regulation (1143/2014) Parrot's feather has been identified as a Widely Spread Species in Northern Ireland and as such, management measures have been put in place to minimise its impacts. Parrot´s Feather Invasive Species. The leaves of this invasive are finely divided, pale green, and occur mostly in whorls of five. [8] It spreads easily and has become an invasive species and a noxious weed in many areas. Under the Invasive Alien Species (Enforcement and Permitting) Order (Northern Ireland) 2019 it is offence to intentionally keep; grow or cultivate; transport to, from or within Northern Ireland, use or exchange P arrot ’s feather ; or to release it into the environment. Parrot’s feather is an aquatic invasive plant, likely introduced to Richmond around 2007 as an aquarium or pond plant that was dumped into a watercourse and spread from there. Parrot’s feather prefers high nutrient content freshwater and warmer climates. Parrots Feather is an a quatic perennial n ative to Central and South America and grows in emergent and submerged form. Parrot feather is not native to Florida. The above-water plant dies back in winter, but is found submerged throughout the year. King County is also a good resource for historic and identification information on the parrot's feather. Download the Metro Vancouver's Best Management Practices for Parrot's Feather here. Leaves & Stem. Parrot feather, Myriophyllum aquaticum, is native to the Amazon Basin of South America and is considered an invasive aquatic weed in North America, Europe, Africa, Japan, and Australia. Parrot’s Feather information . A large caterpillar excavator makes quick work of this non native aquatic plant. It’s easy to see why this emersed aquatic plant is called parrot feather. Parrot feather was choking up this creek. M. aquaticum (parrot-feather) is an invasive submerged/ emergent aquatic weed characteristic of sub-tropical to warm-temperate regions, but found as far north as the UK (recorded from at least 33 countries: native to perhaps 6 of these, all in South America). Species Overview. [8] Often chosen for its aesthetic beauty, this plant has invaded every continent in the world (except Antarctica) from its native habitat in the Amazon River in South America. Parrot feather is now used for indoor and outdoor aquatic use. Parrots Feather - Invasive Species Information. Parrot feather is regarded by biologists as an invasive species, which means that when it escapes from cultivation it can spread rapidly and cause numerous ecological problems, including the displacement of many native plant species. By 2002, parrot feather was assessed as one of the top 200 invasive naturalized plants in Southeast Queensland, Australia (ranked #69 of 200) (Queensland Herbarium 2002). It was recorded as an alien as early as 1906 in Florida, and 1919 in South Africa. Description: This Amazon River species is an aquatic perennial herb with stout stems. Summary of Invasiveness Top of page. It can also invade muddy banks. 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