Live to Plant

Fennel Plant Seeds:
Guide to Storing, Sowing and Germination

Updated: March 27, 2022

Fennel is a culinary herb and a popular vegetable that belongs to the carrot family. It’s an aromatic herb that has been used for centuries to add flavor to food and as a natural remedy for various ailments. Fennel seeds are the most commonly used part of the plant, and they have numerous health benefits. If you’re interested in growing fennel plants in your garden, this guide will provide you with all the information you need to know about storing, sowing and germinating fennel seeds.

Storing Fennel Seeds

The first step in growing fennel plants is to obtain high-quality seeds. You can purchase fennel seeds from a garden center or online store. However, make sure you choose seeds from a reputable source.

Once you have fennel seeds, it’s important to store them properly. The best way to store fennel seeds is in an airtight container in a cool, dry place. You can also store them in the refrigerator or freezer to extend their shelf life. However, make sure that they are completely dry before storing them.

Sowing Fennel Seeds

Fennel plants can be sown directly into the ground or started indoors and transplanted outside once the seedlings are strong enough. If you’re starting indoors, sow the seeds in seed trays filled with potting soil. Cover the seeds with a thin layer of soil and water them lightly.

After sowing, cover the tray with plastic wrap or a clear lid to create a mini greenhouse environment. Keep the soil moist but not waterlogged and place the tray in a warm location with plenty of sunlight.

Germinating Fennel Seeds

Fennel seeds typically germinate within 7-14 days when kept at a temperature of around 68°F (20°C). Once the seedlings have developed two or three true leaves, they can be transplanted outside. It’s best to transplant them on a cloudy day or in the evening to avoid exposing them to direct sunlight.

When transplanting, make sure the soil is well-draining and has been enriched with compost. Plant the seedlings about 12-18 inches apart to give them enough space to grow.


How long do fennel seeds last?

Fennel seeds can last up to three years if stored properly in an airtight container in a cool, dry place.

When is the best time to sow fennel seeds?

Fennel seeds can be sown in early spring or late summer for a fall harvest.

Can fennel plants grow in containers?

Yes, fennel plants can be grown in containers as long as the container is at least 12 inches deep and has good drainage.

How often should I water fennel plants?

Fennel plants like moist soil but not waterlogged soil. Water them deeply once a week or more often during hot weather.

Can I harvest fennel seeds from my plants?

Yes, you can harvest fennel seeds from your plants once the flowers have turned brown and dry. Cut off the seed heads and place them upside down in a paper bag to dry further. Shake the bag gently to release the seeds once they are completely dry.

In conclusion, growing fennel plants from seeds is a rewarding experience that requires some patience and care. By following these guidelines for storing, sowing and germinating fennel seeds, you’ll be on your way to enjoying this flavorful herb in your garden or kitchen.