"The Super A carrot is 40 per cent richer in beta-carotene than normal varieties," said senior technical manager Stephen Shields of the vitamin A-rich vegetable.
"We have been developing the carrot over the past four years and this is a test market year with Marks & Spencer (M&S). Next year we aim to grow around 15ha."
The body converts beta-carotene into vitamin A to improve night vision and the body's ability to fight infections.
Huntapac Produce worked with the UK arm of Monsanto on the Super A, which is an Imperator cross and longer than standard varieties such as Nantes.
Shields said six million seeds were available and 15 million would go on the market next year.
An M&S representative said: "Super A has been grown on the fertile sandy loams of Shropshire and is one of the healthiest varieties ever grown."
M&S nutritionist Claire Hughes explained that vitamin A helped your eyes adjust to light changes, which is why carrots were known for helping you see in the dark.