Photo period question re; flowering light time.

I’ve had outside plants start flowering by August 1, By the time we reached 12/12 in late September, the plants were pretty much done
So, has anyone run 14/10 flowering and, if so, how’d it go?
Thanks

I think my outdoor planting started to flower about August.
My aim is to start next years crop indoors. My plan is to start them at 13--11 in the tent. Then move them outside in April when light hours are greater than 13.
I started harvesting end of September and took the last bit from the plant beginning of November.

12/12 works for all photoperiods, so that is what is generally recommended. Some cultivars can flower under 14/10, some under 13/11.
But what they have in common is that the DLI (amount of light per day) they can take/use is similiar. So if you run different strains regularly it's simple to stick with 12/12 and it works. If you do only one strain repeatedly you can increase photoperiod but have to dim the light accordingly (assuming you optimized the perfect DLI for that cultivar).

I ran 14/10 last grow.. They flowered just fine but the buds were larf.. I wouldn't recommend it..
Most photoperiods will flower at 14.5/9.5

HydoDan said:

I ran 14/10 last grow.. They flowered just fine but the buds were larf.. I wouldn't recommend it..
Most photoperiods will flower at 14.5/9.5

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Why do you think more light led to more larf? You would think that like autos, more is better

I've always considered 14.5 as the trigger point for 95% of photoperiods. They veg at 15 and flower at 14. I'm at latitude 33 and in working practice only June and July have long enough days to hold cannabis in veg.
You can start seeds a month sooner as they are not light aware for the first 30 days and can be started May 1st.

Clones are the finicky ones and time matching was my ongoing nightmare. I solved it by just lighting things up 24-0 in veg. Hang up some LED lights and veg in the dead of winter. Lights off and harvest 10 weeks later.


I'll kill the lights when we get back in town. They'll be ready to harvest mid-March.

Boatguy said:

Why do you think more light led to more larf? You would think that like autos, more is better

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That was my thinking.. But they kinda did more of a veg/flower.. Like equatorial weed..
Lots more leaf and the buds didn't stack.. I did 13/11 the grow before and it worked well.. So now I know longer days are not better.. Live and learn..

Lou66 said:

12/12 works for all photoperiods, so that is what is generally recommended. Some cultivars can flower under 14/10, some under 13/11.
But what they have in common is that the DLI (amount of light per day) they can take/use is similiar. So if you run different strains regularly it's simple to stick with 12/12 and it works. If you do only one strain repeatedly you can increase photoperiod but have to dim the light accordingly (assuming you optimized the perfect DLI for that cultivar).

Click to expand...

My thinking was to match what they will see when they get outside. As it will be increasing in duration when they are planted outside.
Also thinking about doing some landrace strains and they are not native to area and they have more duration of light in natural setting.

formularacer said:

My thinking was to match what they will see when they get outside. As it will be increasing in duration when they are planted outside.
Also thinking about doing some landrace strains and they are not native to area and they have more duration of light in natural setting.

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The real goal of indoor growing is to better the conditions and produce a superior product than outdoors. Mimicking the outdoors is not likely to have the results you are looking for

formularacer said:

My thinking was to match what they will see when they get outside. As it will be increasing in duration when they are planted outside.
Also thinking about doing some landrace strains and they are not native to area and they have more duration of light in natural setting.

Click to expand...

Sure go ahead. But I don't see why it would be any better or worse than keeping it simple. We're growing very hardy plants here.

Programm a small microcontroller to change photoperiod to match a location that you pick. Mimick lower light levels from cloudy days and the rise and lowering of the sun throughout the day. Hell, get an AC and simulate temp drop at night while you're at it.

Lou66 said:

Sure go ahead. But I don't see why it would be any better or worse than keeping it simple. We're growing very hardy plants here.

Programm a small microcontroller to change photoperiod to match a location that you pick. Mimick lower light levels from cloudy days and the rise and lowering of the sun throughout the day. Hell, get an AC and simulate temp drop at night while you're at it.

Click to expand...

I have a method where I reduce the temp by 5 to 8 degrees when light is off.