Looking at the Oxheart carrot I did wonder if this was a carrot even Bugs Bunny would have difficulty getting his teeth into. Oxheart is an heirloom French variety, also known as Guerandes and is from the famous carrot growing region of Nantes, dating back to 1884. It is an unusual, large, almost heart shaped carrot which is why it got its name. Oxheart are quite short (up to 15cm) but also wide (up to 12cm) and can weigh up to 500g each. The blunt shape means it is good for shallow or heavy soils and it stores well.
The one vegetable other than cauliflower that has evaded my attempts to grow successfully has been carrots. My allotment is on fairly heavy and damp clay, slugs and carrot fly are rife and carrots that have survived the slugs have ended up being eaten by carrot fly or generally feeling a bit sorry for themselves in the cold damp clay.