How to Save Cucumber (Cucumis sativus) Seeds

Seed Saving Guide #2708
Family: Curcurbitaceae
Binomial name: Cucumis sativus

Flower Type Monoecious (male and female flowers on the same plant), self-compatible
Pollination Insect pollinated
Isolation Distance 500m
Other Isolation Methods Isolation cages and hand pollinate.
Population Required for Viable Seeds 1
Population Required to Maintain Variety 5-10
When to Harvest When fruit is a mature size, starts to yellow and begins to soften slightly.
How to Harvest

Cut fruit from the vine. Cut fruit in half lengthwise and scoop out the seeds and pulp.

How to Clean

Place seeds in a container and cover with water. Ferment for 1-3 days to remove the gelatinous coating from around the seeds. Add more water, stir the mixture, then decant the floating pulp leaving the viable seeds which have settled to the bottom. Repeat until all pulp is removed. Place seeds in a seive and rinse thoroughly. Spread clean seeds out on a plate to dry.

Image of Seeds Cucumber (Cucumis sativus)

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.