SPECIALIST DUCKWEED CONTROL SERVICES

OUR SPECIALIST CONTROL SERVICES WILL TREAT OR ERADICATE THIS SPECIES. TO FIND OUT IF YOU HAVE DUCKWEED USE OUR FREE ID TOOL OR BOOK A SURVEY

treatment & removal

Duckweed can be treated with a suitable aquatic herbicide or manually removed by hand-pulling. Using the biological method of introducing a competitive species (predator) such as Grass carp which will eat Lemna species is often successful though more long-term. Introducing wide leaved plants such as waterlilies can also reduce duckweed colonisation.

To find out the best way to control or remove Duckweed, and the best time of year to have treatment carried out get in touch.

WHY IS DUCKWEED A PROBLEM?

One plant produces two more plants and those grow to produce two more and so on which creates the characteristic dense colony. It has sticky roots that enables it to adhere to bird’s plumage which aids its spread to other waterways.

ABOUT DUCKWEED

SCIENTIFIC NAME: Lemna Minor
ORIGIN: Africa, Asia, North America

A floating aquatic plant with small, round leaves that cover the water surface, Duckweed (from the family Araceae) is one of the smallest flowering plants in the world but with an extreme growth pattern. As Duckweed has been shown to remove heavy metals like lead, copper, zinc and arsenic very efficiently from waters with non-lethal concentrations, it is known to be used in wastewater treatments.

• Has one, two, three or four leaves each having a single root hanging in the water.
• Leaves are oval, 1 – 8 mm long and 0.6 – 5 mm broad, light green in colour.
• Forms dense carpets covering the entire water surface.

HABITAT

Duckweed prefers freshwater ponds or slow moving streams, but can also be found infesting lakes and rivers.

IMPACT: HIGH

Its dense matting like structure reduces light penetration and oxygen levels, it is highly invasive and its ability to completely smother the water’s surface leads to death of fish and beneficial algae.

TOXICITY: ZERO

Duckweed presents no physical danger to either humans or animals.