[sagehen]

They're having a potato day at Ryton Organic Gardens on the 31st of January, which is open to non-members of the public. If you are a member, there is one on Saturday as well (30th January). Ryton is also starting it's allotment courses soon.
For more info, go to their website:

http://www.gardenorganic.org.uk/gardens/ryton.php