Fritillaria Imperialis
that is the only variety that worked for me..........
they bloom a rather neat flower here in the springtime along with the tulips and so on
I just planted mine as the focal part of my spring garden...........one to each flat bed
at my other place where I had them I had deer and rabbits by the 100's and lots of other critters..
voles and moles and all kinds of things....
they do a great job
here they run about 8.00 a bulb or so........
a friend at the nursery told me to get one..they use them all the time too........in the fields of daffs and tulips........
for me not to loose one crocus out of hundreds of them here even in the new place with one of these bulbs planted.......says a lot..