In article ,
Rusty_Hinge writes


It goes without saying that seed husks with no seed within are bound to
float. While I haven't tried it, I predict that fertile hazelnuts will
float, as will sunflower seeds.



As will viola and petunias? Just thought I ought to mention the rather
weird tips on the site recommended although i am sure most of the rest
of the information might be helpful
There used to be a HUGE germination database by one of the US
universities online but I haven't seen it for ages. I save the RHS
guides each year and i have several books but you can bet your bottom
dollar the seed i want to start aren't in any book
--
Janet Tweedy
Dalmatian Telegraph
http://www.lancedal.demon.co.uk