Crocuses are a long way up my list of favourites and some Tony has mentioned that do really well here in my approx. zone 8 USDA garden are:- Autumn -C.laevigatus, this has spread into a pretty sizable patch over the years growing in the shade of a weeping japanese maple. I guess it is really more early winter in timing than autumn. -C. goulimyi, also late and increases well but the flowers don't hold up to bad weather very well. -C. speciosus and its selections are earlier,do well and are real standouts in the garden.These flowers are also very prone to damage by the weather. Spring:- -C.corsicus, this is a real knockout, it increases very well here and the flowers are so lovely,I cannot understand why it is so expensive to buy when it is so prolific. -C.tommasinianus and some of its selections also do well here but does not spread itself around like a weed, I'd be very happy if it did, a nice weed to have. -C.ancyrensis, this increases very quickly and flowers very early in spring when its very bright golden colour is most welcome. I do grow more but these are the ones that do best,after all Australia is a pretty alien place to these little fellows,there are times when I wish for softer conditions for my plants. One I wish would increase into a decent clump for me is C.seiberi Hubert Edelstein,do look at all the wonderful Crocus images on the wiki, Lyn Edwards Canberra