To keep the seeds of bergamot, you need to choose mature bergamot first. Mature bergamot usually turns yellow and the skin becomes hard. Make sure that the bergamot shows no signs of damage or decay.

Cut the bergamot, and then take the seeds out of the pulp with a spoon. Put the seeds on paper towels or dry towels and let them dry for a period of time.

Once the seeds are completely dry, store them in a dry and cool place, such as a sealed bag or a glass bottle. Ensure that the seeds are stored in a dry environment to prevent mold or rot.

In the next planting season, take out the seeds and prepare to plant the soil. Gently bury the seeds in the soil and then water them gently. Keep the soil moist, but don't over-water it.

Wait a few weeks, and the seeds will begin to sprout. Once the seedlings grow up and become strong, you can transplant them into larger containers or outdoor gardens.