mmmaggee-I grow many species bulbs and seeds here[Australia-then a bit lower] and all i can say is that Ive been lucky,.,and had a good teacher[probably as good as your mum],..,Stories Ive been told of Candidum growing wild in the 60's 70's 80's and now there is nothing,..,I have a backlist of people wanting Candidum, as long as my arm, and i am waiting for more bulk seeds, from B &T to sew on,.,.I too, grow in pots, or thick pine framed wooden boxes, with success..[but i do lose the odd one or two],.and i dont believe i could tell you how to grow Candidum, better than you already know,.with your experience,.,.Anyway, welcome to the 'mad lily train'
Its great to have you here!