Carrots can be tricky
The pesky carrot rust fly is the biggest problem. It can get into even the most well-protected crops and ruin them. Viral problems and wireworms are two other problems. Some hybrids such as Fly Away carrots are said to be resistant. And some gardeners claim that one way to thwart the carrot fly is to grow crops in raised beds or tall containers at least three feet off the ground. But the most recommended method is to cover crops with protective screening such as Remay cloth before seedlings appear.