Will parsley and fennel be happy growing together?
Certified GKH Gardening Expert
Unfortunately the only thing that tolerates fennel is dill. Fennel is a very poor companion in the garden. Even planting next to dill is risky, as they will cross pollinate, leaving the next season's seeds (if you harvest for replanting) useless, as they would be a cross between the two. I'm sorry, but fennel is one of those stand-alone plants.