"After the poor summer last year we decided to plant our 2009 crop early to get a good start for this year," said manager Nigel Bartle. "It's great to see fresh tomatoes so early. This is a record for us and we believe we are one of the earliest."
Bartle, also chairman of the British Tomato Growers' Association, said the fruit came from one of six varieties grown on the site, from large-on-the-vine to sweet cherries.
They are sold to local customers and to retailers through international produce group The Greenery.
The Greenery UK managing director Kevin Doran said: "Cornerways has a great environmental story. We really see this as an example of the future of supply."
The nursery is part of the British Sugar Group and recycles energy from a nearby sugar factory for its 200,000 tomato plants.