Much of North America, North Africa and Eurasia (including Britain)
Water
freshwater
Maximum size
250 cm
Temperature
4–22°C
pH
7–8.5
Hardness
6–20 dGH
Care level
intermediate
Lighting
Medium to high light; CO2 helpful
Care
Whorled water-milfoil grows in lowland ponds, lakes, marshes, ditches and slow streams, preferring still water over sandy or loamy, alkaline bottoms. Branched stems often reach 50–250 cm, with feathery leaves in whorls of four or five. 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 is a temperate plant and suits coldwater tanks and ponds better than tropical aquariums. Water figures are our estimate, not from the sources. It is recorded as invasive in some areas. Never release this plant or dispose of it in drains or waterways; it is invasive in some countries. Sources: Wikipedia (en.wikipedia.org/wiki/Myriophyllumverticillatum); Wikipedia (en.wikipedia.org/wiki/Myriophyllum); Wikipedia, List of freshwater aquarium plant species. Checked October 2026.
Breeding
In autumn it forms overwintering buds (turions) that sink, lie dormant and sprout in spring; these and stem fragments can be planted. Cuttings 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.