Phillip Island Landcare are revegetating the Phillip Island recreation reserve, with a three-year $60,000 project that will see 9000 trees planted.

Phillip Island Landcare last year started the project, which is funded by AusNet, in the southeast corner of the 80-acre site, with volunteers planting 1500 tubes of trees, in an area protected by wallaby and rabbit proof fencing.

There will be a planting day on August 16.

Landcare's David Rooks said across the three years, there will be seven different trials carried out, to see which is the most successful revegetation method, including a low temperature burn to encourage natural revegetation, scarification of the ground, as well as mulch and water crystals and natural generation.

"These plots will help assess the success of outcomes to help guide future decisions," David said.

"Within each method half of each trail will use rabbit guards, the other half will be without rabbit guards. This will help us determine the impact purple hens and other birds may have on the new plantings.

"Purple hens are renowned for removing new tubestock but find it more difficult with guards."

He said the trial sites will be mapped through Google Earth to measure changes.

"What we learn from this project will be used to protect and enhance other vegetation across this 80-acre site," he said, adding a sign trail will eventually share information with the community.

The site is owned by Bass Coast Shire Council, whose staff have also undertaken plantings, and for years has been full of rubbish, weeds and animal predation.