Fertilizer Australia says there has been an increasing amount of fertiliser coming into the country that is incorrectly labelled.

The organisation has launched a national fertiliser labelling awareness campaign in response, saying incorrect, or no labelling, can risk plant health, human health, the environment and food safety.

Fertilizer Australia chief executive, Stephen Annells, said Australia in recent years had imported a lot more fertiliser from markets "unfamiliar with Australia's labelling requirements".

"I wouldn't call it dodgy fertiliser, it's just the fertiliser hasn't been labelled," he told ABC Rural.

"It probably came from that period of time during COVID-19 and Russia's invasion of Ukraine, when we had a shortage of fertiliser and people were looking to new markets.

"We're not sure about the quality of that fertiliser, but certainly, if it's not labelled then we don't know what's in it."

'If there's no label, don't buy'

Mr Annells said he was not aware of any recent examples where non-labelled fertiliser had caused harm.

He said the organisation was aware of several consignments sold mostly to the horticultural industry that had no labels at all, and there were other examples of product sold with incorrect safety data sheets.

He said historically there were examples of fertiliser imported that was "simply soil" and one case where cadmium levels far exceeded the maximum permissible concentration.

"My advice to growers, is if there's not a label, don't buy it," he said.

"Our goal over the next 12 months is to inform growers, advisors and fertiliser retailers about what information should be on a label and the consequences to themselves, their staff, their produce and their land, of not knowing what's in the fertiliser."