And, according to him, the Greens - at both the state and federal level - are a big part of the reason Tasmania's economy is going gangbusters.

Senator Di Natale was in Launceston on Friday to announce his party's national health policy, which, among other things, would see $40 million pumped into Tasmania to clear public hospital waiting lists within two years.

But he was also here to support the re-election campaign of his Greens Senate colleague, Nick McKim.

Senator McKim only just scraped in at the 2016 double dissolution election, beating Tasmanian One Nation candidate Kate McCulloch by only 141 votes.

Senator Di Natale said Tasmania's wilderness battles of yore had been "hard-fought and hard-won" and that the gradual "transition" in the state economy occurred against this backdrop.

"It was the Greens that helped drive this clean, green image for Tasmania, away from old polluting industries to new industries," he told The Examiner.

"A lot of the success you've seen in the Tasmanian economy has been driven by the role the Greens played in state and federal parliaments - in Tasmania, in particular."

The Greens leader said the party's election campaign was all about climate change and the environment.

"We're the only party with a plan to actually deal with what is essentially an existential threat, not just against Tasmanians but against our species," he said.

"It's our job to ... chart a pathway forward, here in Tasmania and across the country."

Senator Di Natale, a Victorian, said he loved visiting Tasmania and that he always felt "at home" here in the birthplace of the Greens.

"I'd like to think I'm part of the Tasmanian family in some way," he said.

Senator McKim indicated that, in their Tasmanian campaign, the Greens would be speaking to people's concerns about the terrible bushfires that ravaged parts of the state over the summer months.

"Tasmanians understand that climate change is not just a global issue, that it actually is having impacts in people's day-to-day lives here in Tasmania," he said.

"And the biggest example of that recently was the bushfires that we suffered over the summer, where we know that because we're still burning fossil fuels that those bushfires, those extreme fire weather days, are going to become more common and are going to be more dangerous to Tasmanians."

Despite a poor showing at the 2018 state election, which saw the Greens lose one of their three seats and barely hold on to another, Senator McKim said he'd had no trouble generating grassroots support for his campaign.

"A lot of new people who have never joined our campaigns before are joining because they know we're a party they can trust to look after the natural world, take action on climate change and to hold the major parties to account," he said.

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