How to Germinate a Bronze Fennel

Soak seeds in water for four to five days prior to planting to improve germination rate.

Plant seeds in garden as soon as danger of frost is past and as soil is beginning to warm. The most appropriate time is generally between March and May or when temperatures reach the upper 50s. Space the seeds 15 inches apart and place them 1/2 inch deep. Select a location with full sun exposure and well-drained soil, both of which will produce a higher quality of oils and seeds. Loamy or sandy soil is superior to clay soil for growing fennel.

Provide regular water but do not allow soil to get waterlogged; allow it to dry out sometimes. Keep in mind that fennel is drought tolerant and will grow well even in adverse conditions.

Harvest leaves whenever they are large enough. Harvest seeds at the end of summer, after the plant has gone to flowers and seeds, by placing a flower head in a paper bag and allowing to dry. The dry seeds will drop into the bag naturally and can then be stored in an airtight jar to preserve.