http://www.bbc.co.uk/digin/

and if you have kids

http://www.bbc.co.uk/cbbc/bluepeter/central/getinvolved/seedgiveaway.shtml


Happy planting

1st link saying ran out but can still order from Cbeebies if you have kids/grandkids
http://www.bbc.co.uk/cbeebies/greenballoonclub/feedback/index.shtml