Jim McKenney wrote: >It might be worthwhile to re-do these crosses using the white-flowered Colchicum 'Innocence' aka 'byzantinum album' instead of Colchicum speciosum 'Album'. < Possibly, but Colchicum byzantinum is an ancient sterile hybrid, and 'Innocence' is presumably a sport from it: I can't imagine that a change of colour has restored fertility. John Grimshaw Dr. John M. Grimshaw Sycamore Cottage Colesbourne Cheltenham Gloucestershire GL53 9NP