Growing different varieties together can help or hurt your plants. Here are the plants that help or inhibit carrots, watch for more companion guides to come.
Carrot pest repellents: Onions, Leeks, Rosemary, Wormwood, Sage, Black Salsify
Carrots love Tomatoes, they keep them cool and use up the surrounding nitrogen, which carrots don't like.
Carrot roots have an exudate that are beneficial to the growth of Peas.
Carrots do not like Dill