The variety vulgare is grown for its seed and essential oil, obtained by steam distillation and known as bitter fennel oil. The sweet variety dulce (Foeniculum vulgare azoricum), commonly called ...

However, more research is needed to fully support their digestive benefits. Fennel seeds (Foeniculum vulgare Mill) are long, thin, pale green seeds with a sweet, licorice-like taste and scent.

There are three varieties of fennel - which are used in different ways: common fennel (Foeniculum vulgare var. Vulgare), sweet fennel which is used as a herb (Foeniculum vulgare var. dulce ...