Those kinds of lilies are always alive and can be replanted at any time. Just don't store them. They need to be underground as soon as possible.

if they are selling them at the stores for october planting...

one might surmise... that you can do it...

yes.. it would be better if they werent green.. but if you dont do it now.. lets be honest.... will it ever get done.. lol ...

i would leave the green attached.. so i replanted at the same depth.. and cut it off in a few weeks when it browns..

or if you leave them.. it will remind you in spring.. where you put them.. so you dont plant annuals over them.. been there.. done that.. lol

ken