Tasmanian Labor will not make the same “mistake” in joining forces with the Greens.

Labor’s state leader, Rebecca White, has vowed never again will her party form an alliance with the Greens, whom she claims are hindering Tasmania.

“The Greens are holding the state back, and it’s because they only ever provide a voice for the few,” she told the party faithful at a state conference on Sunday.

“They do not seek consensus. They ridicule and talk down to anyone who doesn’t agree with their view.

“They leave people behind. Working people. Our people. It was a mistake to think that Labor could ever work with the Greens. We will never make that mistake again.”

Yet she admitted Labor had lost its focus at both the state and federal levels, with the party needing to reconnect with traditional voters, especially those in the regions.

White’s dogged attack flew in the face of the alliance which has seen Labor share government with the Greens on several occasions in the southern state.

She harked back to the Greens’ opposition to hydroelectric power in the 1980s, the construction of the Basslink undersea cable a decade later and, now, a wind-farm development on Robbins Island.

“At the next election, Labor will govern alone or not at all,” White said.

The Greens leader, Cassy O’Connor, said White was “playing silly political games”.

“She should know that leadership across the community is required to ensure future wellbeing and prosperity for Tasmanians,” O’Connor said in a statement.

“Ms White is abrogating her responsibility and that of her Labor colleagues, to work constructively in the parliament to tackle the challenges facing Tasmania today.

“Labor has thrown up its collective hands and retreated to a lazy attack on the Greens.”

The treasurer, Peter Gutwein, will not hold his breath, saying given the chance Labor would do a deal with the Greens to regain power and vote with them in parliament most of the time.