if your 1st frost doesn't come until november you should be fine. there's still 7 weeks left before that time rolls around and if there's a need for another week or so it's not that hard to handle small plants like that in a manual flower...you just have to watch your light timing and be careful to stay within your night zone. you can still add ferts too...if they were mine i'd continue their normal ferting until 3 weeks before harvest, then water only and only enough to keep it alive.