Oops.
Have always failed at carrots but was still tempted to buy a tray of carrots I saw in a clearance box in a garden centre for 1 euro. Bought it and didn't bother separating the roots as I planted them, as I was so convinced that they would fail. But instead they grew, and as the roots were so entwined, they have grown very wonky.
All the same, they tasted glorious.