We may need some Canadian and UK gardeners to reply, DeborahL.
I know very little about this. The nearest Seedy Saturday that I know of is in Calgary [url=https://seedysaturdaycalgary.shawwebspace.ca/profile/](click)[/url] It is, apparently, quite an affair but Calgary is too far for me to travel for seeds.
Doing a google search just tells me that there are other locations for the events in Canada. And, I came up with this: [url=https://www.seedysunday.org/](click)[/url]. This seems to be some kind of headquarters for, perhaps, a formative organization in the UK.
I hope that others can take this further . . .
We are each other's harvest; we are each other's business; we are each other's magnitude and bond. ~ Gwendolyn Brooks