Calling it a "common sense victory for farmers" and the environment, the Greens will support the Coalition's preferred 15 percent backpacker tax rate - bringing to an end 18 months of haggling and uncertainty over the plan.

In exchange, the government will scrap its plan to tax 95 percent of backpackers' superannuation, lowering that rate to 65 percent.  The Coalition will also chip in an extra $100 million in Landcare funding.

"We don't agree with this Government on many things," said Greens leader and Victorian Senator Richard Di Natale to the ABC.  "But in the end our responsibility in this place is to the community that we serve.  Ultimately what we faced was going away from this place with regional Australians being sent to the wall and we weren't going to let that happen."