|In recent years my carrots have grown with short multiple roots instead of one straight root. I have sandy soil and carrots used to grow fine. I don't know what has changed.
|Carrots love sandy soil. And well-rotted manure worked into the soil helps improve soil texture and increase nutrients.
However, fresh manure, or even recently applied rotted manure, can cause carrots to fork and send out little side roots. Don't use it before you plant your seeds.
Thin overcrowded seedlings by snipping them with scissors, instead of pulling them out, to prevent damage to the roots of remaining plants.
Hope this helps!