However fall is a great time to collect seeds from all your various hostas. Always make sure that the pods are dry and not green when collecting seeds. Usually the seed pods on the bottom will dry out and open first and then you know it's safe to collect the seed pods. I put them in envelopes and mark them with what the name of the parent hosta. Hostas do not come true from seed. So you never know what you will get when you plant the seeds. More than likely you will get a plain green hosta, but every once and a while you might get a yellow, variegated, or even a streaker (if you are lucky).
Fall is also a great time of the year to take notes for next year's garden. Are some hostas too close together? Do some hostas need to be divided? etc. Even better, take a picture with your digital camera and write notes on that picture.