How to Save Fennel (Foeniculum vulgare) Seeds

Seed Saving Guide #2745
Family: Apiaceae
Binomial name: Foeniculum vulgare

Flower Type Perfect, self-fertile
Pollination Insect pollinated
Isolation Distance 500m
Population Required for Viable Seeds 5
Population Required to Maintain Variety 20-50
When to Harvest When umbels are dry and seeds turn brown.
How to Harvest

Cut umbels and place in a container or bag to dry for 5-14 days. Rub seed heads between hands or on a mesh screen to release seeds.

How to Clean

Screen and winnow to remove chaff if necessary.

Image of Seeds Fennel (Foeniculum vulgare)

Isolation may not be necessary if generic seeds (rather than a specific variety) are desired.

What is Seed Saving?

Seed saving is the practice of collecting and storing mature seeds from open-pollinated plants. By allowing plants to reach full maturity and harvesting the seeds, they can be cleaned, dried, and stored for future use. 

  • To learn the techniques and methods needed to save seeds in your garden, we recommend reading our seed saving series.
  • To view a combined table of all our seed saving guides view our Seed Saving Chart.
  • To browse our seed saving guides individually click here.