The tree, which borders the Midland Highway between Perth and Longford, will now serve as a timely reminder for people to speak up and check in with others.

It is the third Tasmanian tree to be registered as part of the national Blue Tree program, aimed at promoting discussions around mental illness through the notion - "spread the paint, spread the message".

Last year Northern Midlands councillor Andrew Calvert suggested painting the tree, but was unable to garner council support due to the estimated cost of more than $10,500.

However, after a number of community members and local businesses stepped in and offered their services for free, the project came to fruition.

Cr Calvert said it was a fantastic result.

"I am just very glad it has happened, and I think it shows what an important issue mental health really is," he said.

"The statistics show we all know someone or of someone who has been affected.

"When I first saw the tree after the bypass was first finished, I knew then that's what we should do with it.

"It's there to increase awareness and it if saves even just one life it's done it's job, as far I am concerned."

There are 612 blue trees registered in different locations across Australia, including one at one at Penguin and another at Rossarden.

Northern Midlands mayor Mary Knowles said the project had been 100 per cent sponsored by the community, with donations provided by Pfeiffer Cranes, Mitre 10, Meander Valley Painting and a number of local residents.

"In the recovery phase from the COVID-19 pandemic we need to focus on action-based resilience initiatives that strengthen local capacity and capability and encourage community engagement," she said.

"Never has the need to spread the message that 'it's OK to not be OK', and to break down the stigma associated with mental health, been of greater importance."