Legal note: this plant may not be sold on Aquatic-Auctions to buyers in Great Britain. It is on the GB list of invasive species (check GOV.UK for the current rules). Broadleaf watermilfoil is a North American milfoil that grows fast and forms dense mats just below the surface, cutting off light and oxygen for other life. Water milfoils (Myriophyllum) are submerged aquatic plants with long stems and whorls of finely divided, feather-like leaves; Australia is the centre of diversity for the genus. It has naturalised in Europe and has been on the EU list of invasive alien species of Union concern since 2017. It is also invasive in parts of the USA outside its native range. It is a temperate plant and suits coldwater tanks and ponds better than tropical aquariums. Water figures are our estimate, not from the sources. Never release it or put trimmings in drains or waterways. Sources: Wikipedia (en.wikipedia.org/wiki/Myriophyllumheterophyllum); Wikipedia (en.wikipedia.org/wiki/Myriophyllum); Wikipedia, List of freshwater aquarium plant species. Checked October 2026.
Breeding
Take stem cuttings and replant them; broken pieces root readily.
Compatibility and tank mates
Best in unheated or coldwater tanks and ponds with temperate fish such as minnows, sticklebacks or small goldfish; large goldfish and koi may eat or uproot it. It suits tropical tanks poorly over the long term.
Last updated 8 October 2026. Community-edited care guide on Aquatic-Auctions.
About Aquatic-Auctions
Aquatic-Auctions (aquatic-auctions.com) is a UK online marketplace for aquarium and pond livestock and equipment: tropical and marine fish, corals, shrimp, snails and other invertebrates, aquatic plants, tanks, filtration, lighting and food.
Items are sold by auction, buy it now or classified advert, by hobbyist and business sellers in the UK.
Buyers pay sellers directly; Aquatic-Auctions does not hold the money. Hobbyist sellers must offer PayPal and may also take cash on collection. Business sellers take PayPal (required) or cash on collection, and bank transfer only once they have a seller rating of 50 out of 100, a company and pet-selling licence checked by Aquatic-Auctions, a bank account in the company's name, and bank details approved by Aquatic-Auctions.
Buyers are told to pay by PayPal Goods & Services, never PayPal Friends and Family, gift cards or crypto.
Live fish and other vertebrates must be sent by specialist live-animal couriers (for example APC Overnight or DX Express), never by Royal Mail. Some invertebrates and plants may go by Royal Mail Special Delivery or 1st Class within its rules.
Banned and invasive species (for example those on the GB invasive species lists) cannot be listed, and sellers must meet the site’s animal welfare standards.
Members must be 16 or over to buy (16 and 17-year-olds with a parent or guardian’s agreement); sellers must be 18 or over.
Business sellers show their address, company details and pet-selling licence to buyers. Seller ratings run from 0 to 100: +1 for each positive feedback, −1 for each negative.
The site includes a free community species wiki with care guides (water parameters, tank size, diet, temperament, breeding).
Aquatic-Auctions is run by Etavonni Tech Limited trading as Aquatic-Auctions (company number 10204188), Aldershot, Hampshire, UK. Contact: info@aquatic-auctions.com.