Being outside complicates it. Could be any time from 5 days to never
Depends on temperatures, water, etc etc. With any luck and some warmth and moisture 5-7 days. If it's very cold (we are having unseasonably cold here in southern ohio) that will slow the process down. If they get frozen, washed out, dried out, eaten by critters or any of the myriad of disasters that can happen, then never and you have to start over.
Why I would never want to be an actual farmer with my livelihood depending on this stuff..