Over 40 nationalities of people have made up Trevelyan's seasonal workforce for this year's harvest.
Human resources manager Jodi Johnstone said they play a vital component in filling roles with many travelling on work visas, or backpackers who wanted to earn extra cash for their holiday.
About 1200 workers were needed at the peak of the season and social media had become the best way to attract staff, she said.
"Social media and Facebook is really huge for us. We have about 3500 Facebook followers and we use it to chase returning staff."
The company did hardly any advertising and relied on internet reach, word of mouth and its reputation, she said.