Hundreds of gardeners swapped seeds in Brighton at an event to try to stop crop varieties from being lost.
Hundreds of people attended the seed swap in Brighton
The Seedy Sunday event, in Upper Market Street, enabled people to swap seeds which prevents types of vegetables and flowers becoming extinct.
Organisers claim in the past 100 years, 90% of seed varieties have been lost.
Gardeners have to swap the seeds because a licence is needed to sell them. Last year more than 1,000 people attended the event.
Organiser Fran Saunders said seeds being swapped included Cherokee trail of tears, which the Cherokees took across America.
"They have been preserved - you can't buy them," she said.
The seed swapping event idea came from Canada where a Seedy Saturday was set up on Vancouver Island.
Organisers of the Brighton event say it is important to preserve the diversity of nature.