Founder Guy Watson also grows in Cambridgeshire, Yorkshire, Hampshire and Cheshire and sells 47,000 vegetable boxes a week containing 100 varieties.
The firm's aim is to make organic vegetables accessible and more affordable by delivering free to customers' doors by the shortest possible route.
Representative Vitha Shepard said: "It's about growing and delivering as locally as possible and reconnecting people with food."
Soil Association director of communications Molly Conisbee said: "The awards celebrate the best in organic products. Many organic businesses are bucking the recessionary trend."
The awards recognised the best in innovation, quality and commitment across several sectors including health and beauty and textile products.