All are welcome at the event and you can bring along any spare seeds, plants and seedlings and take home a whole new variety to plant this year.
Experts from the Brecon and Radnor Beekeepers will be giving a talk and a local food cafe will be showcasing locally-grown food and drink products.
There will also be activities for children to do on the day as well as things to take home and grow over the Easter holidays.
The seed swap will take place from 10am-2pm.