The result is the Purchase a Post campaign, which has already seen more than 13,400 fence posts donated to bushfire-affected landowners. That's enough posts for almost 50 kilometres of fencing.

"My family farm is between Tumbarumba and Jingellic. We got impacted about four o'clock in the morning by the Green Valley fire, before the bushfires all joined up," Mr Hardy said.

"We lost probably 60 per cent of our country. There were no stock losses and the fire crews managed to save the house and the sheds.

"We lost some fences, but mainly it was pasture. We were pretty lucky, really."

Mr Hardy said the idea for Purchase a Post came after his sister Prue commented that she knew a lot of people in Sydney who, rather than just giving money, would prefer to make a donation of something tangible.

"She asked 'why can't we just buy some fence posts?' and I thought that was a great idea," he said.

The morning after this conversation, Mr Hardy approached his employers, Delta Ag, with the idea and won their immediate backing. Manufacturer Waratah Fencing also got behind the campaign.

As Delta Ag is not adding mark-up, the fence posts are priced at $6.25 each for people to buy and donate.

The fence posts are being donated to landowners in the Adelong, Batlow, Talbingo and Tumbarumba areas.

"It's been incredible really, the outpouring of support," Mr Hardy said.

"People have been phoning to make a donation from all over the place. We've had calls from companies right down to little kids coming in with their pocket money."

Mr Hardy said he and his colleagues had been working with fire crews and contacting landowners individually to offer them some of the donated posts.

So far, donated posts have been given to more than 70 landowners.

A second round of the fundraiser has been launched, with enough donations for 1500 posts already received.

"Fences are vital to the farms. You can't manage your stock without them, basically. You can't keep anything in," Mr Hardy said.

"I've been to a couple of farms where there are no boundary fences between three neighbours and stock are just wandering around everywhere.

"Trying to manage those and keep everything fed, especially when you are hand-feeding, means fences are vital."