Do you use nutes different for auto flowers? Also My auto has a flowering date of 6 weeks listed by the seed bank does that mean it will start flowering at six weeks or be ready for harvest then? Should I start to flush on the 5th week or just start to ween the nutes down and flush on the 6th week?
Usually the time listed on autos is time to harvest, but that's under optimum conditions, and most growers say they usually go 2 weeks or more, past that date. I went 17 days past the 60 day harvest the breeder claimed.
You'll want to flush 1-2 weeks before harvest, which you'll have a better idea of as the plant grows, and as the trichomes mature.
I never bother weaning them off the nutes. I just stop and flush when necessary.
Im actually doing 1 auto and 3 photos and i started them at the same time on 18/6 light schedule for about a couple months then when my photos got about 2 1/2 feet i put them all together on 12/12 light schedule. My auto maybe has a couple more weeks till shes done. In my opinon i think autos need longer light for the inital veg part and a little in the flower part but then its pretty much over kill.
I have noticed that when i do autos like this with a 12/12 light cycle towards the end it produces more resin and bud swell. You also can get away with growing with 1 kind of light if your on a budget i would go for the hps first but you will have more stretching . I did my auto hps the whole grow except for first week used mh. But it can be done