I have a daffodil patch that was planted 12 or so years ago. It has never been divided. The recent years are full of leaves and not much flower bloom. I would like to divide them so they are not crowded and hopefully more flower bloom. Can I dig them up and divide them in the next 2-3 weeks (early to late Oct) or should I wait until after the spring bloom? Every website I read seem to say late spring. I live in Philadelphia area. Thank you.