The council is now seeking volunteers to be part of the rehabilitation works planned for the Bay-based wetlands, coming after it successfully applied for the significant grant from the NSW Government's Environmental Trust.

"The Mambo Wetlands are a precious part of the Port Stephens environment," Jordan Skinner, Port Stephens Council's natural resources team leader, said.

"They play a crucial role in maintaining the health of the port - filtering water, providing a nursery for fish and crustaceans, and a vital food source for birds, insects and other native animals.

"Unfortunately, the Mambo Wetlands face many threats including encroaching weeds from neighbouring properties. These weeds can compete with native species and damage the health of the wetlands.

"This grant will allow us to regenerate Mambo Wetlands and educate our wider community about its importance and how we can all help to protect this treasured environment."

The grant money will be used to target invasive species of flora in the wetlands, rehabilitation works and to educate neighbours on appropriate plants that would work in their backyards.

"One of the biggest things that our community can do is to plant appropriate native gardens," Mr Skinner said.

"As part of this grant, we'll be helping neighbouring properties with garden plant choices to reduce the source of encroaching weeds."

The council is now seeking volunteers to help with the rehabilitation works.

"We want Mambo Wetlands to be around for future generations to enjoy," Mr Skinner said.

"We already have a dedicated group of volunteers who meet for a monthly working bee - but we're always looking for more people to help."

For more information or to volunteer at the Mambo Wetlands email volunteers@portstephens.nsw.gov.au.