Hi, Rosemary -- this might be totally off base -- but two things come to mind --
1. You might want to double check with customs(?) or maybe the USPS -- it may not be okay to send flower seeds to a different country -- due to possible contamination of the natural flora, etc. (I'm just sayin' and could be over-thinking here.)
2. Check with your local Garden Club, Agricultural College (I think Penn State might have an extension near you?) or local Community College for advice -- or maybe a good plant nursery.
And on this note -- I saw my first crocuses today -- yeay!
--Marilyn