Quote Originally Posted by Zandor
24-48 hours in hydro then the stress is to high, in dirt I would guess about a week or so but that's just a guess. There are many factors in dirt that can extend or shorten that time.

What he said.

Some things to consider would be the temperature of the grow area,humidity and size of the pot.
Personally, i can't go 5 days without watering my plants..but they're also almost 40 days into 12/12...so...

It also depends on the size of the plant