It’s a common tale. A bed of carrots is seeded, they sprout and start to grow, and a harvest of crisp roots beckons in a few short months. Yet, when it comes time to dig the crop, it’s discovered that some of the carrots have forked, developing multiple roots. The multi-rooted carrots may look a little funny and are harder to clean, but forking doesn’t affect the flavour. So, what causes carrots to fork?