Longer Days For Flowering?

Hi, everyone. Is there any reason why we couldn't give a plant longer days while flowering? ...or any reason that it might be beneficial or not? By 'longer days' I mean longer as in, not 24hrs but say 48hrs (for simple maths).

Instead of 12/12, what might we expect from 24/24, instead? ..or 20/28?

I'm not trying to reinvent the wheel, I am curious and bet my biscuit stash that plenty of people here have a good enough understanding to give a straight answer.

Thanks.

I imagine 24/24 would really confused the plants. We're talking about a photoperiod plant here. Hit google and read about these kind of plants and it will make sense

Agreed. Seems like I've seen 14 hours of light as the threshold point from veg to flower.

GBAUTO said:

Agreed. Seems like I've seen 14 hours of light as the threshold point from veg to flower.

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Dont quote me on this but I think and I mean THINK..... that you can run 14/12 or 16/12 but the off set would be a pain in the ASS, I read it a long time ago but unsure of how credible it was

Hi, guys. Thanks for the reply.

I get that photoperiod plants need longer uninterrupted nights to flower, I'm just wondering if the natural photoperiod for a plant HAS to be what the sun gives it. Like, if the world slowed its spinning down by half, (doubling day/night times) would the plants still 'get' when to flower? And would they flower with different characteristics than they would with the original 'fast' day/night?

If 14 hours of light is the threshold point from veg to flower, would it not still flower with 14 hrs light, 20 hrs dark, for instance?
14, 20, 14, 20, 14, 20?

I'm just not getting that 24/24 would confuse a plant if 12/12 doesn't.

I guess my question really, is "Do plants know the time? ....or do they act according to what the light/dark periods suggest? We all know the answer for that one in this context, but 'telling the time' within it, does that happen?

Like it's been dark for a lot longer than it has been light, but my threshold is 14 actual hours, so I'll ignore the light cycle?

Apologies if this doesn't come across the way it does in my head, but it is the best that I can ask my question. Thanks, guys.

If the plant was slowly, over several generations adapted to it then it would be fine. Increasing the day length by 3p min per generation, breeding the most healthy plants each time and culling the rest. Eventually you could probably have a plant that thrives under 24/24. But current seed stock would not do well with that extreme a change.

13/12 would probably be fine but I wouldnt do much more than that and it would be a pain in the ass!

Shorter days would be what I'm more interested in. 8/12 holds promise imo.

Ozmap said:

Hi, guys. Thanks for the reply.

I get that photoperiod plants need longer uninterrupted nights to flower, I'm just wondering if the natural photoperiod for a plant HAS to be what the sun gives it. Like, if the world slowed its spinning down by half, (doubling day/night times) would the plants still 'get' when to flower? And would they flower with different characteristics than they would with the original 'fast' day/night?

If 14 hours of light is the threshold point from veg to flower, would it not still flower with 14 hrs light, 20 hrs dark, for instance?
14, 20, 14, 20, 14, 20?

I'm just not getting that 24/24 would confuse a plant if 12/12 doesn't.

I guess my question really, is "Do plants know the time? ....or do they act according to what the light/dark periods suggest? We all know the answer for that one in this context, but 'telling the time' within it, does that happen?

Like it's been dark for a lot longer than it has been light, but my threshold is 14 actual hours, so I'll ignore the light cycle?

Apologies if this doesn't come across the way it does in my head, but it is the best that I can ask my question. Thanks, guys.

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I'm sure they would live, herm to crap and seed like crazy and sort themselves out eventually. Nature finds a way.

growingforfun said:

I'm sure they would live, herm to crap and seed like crazy and sort themselves out eventually. Nature finds a way.

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It's quite funny I have recently grown a land race/early skunk Cross seed that went too flower on 16/8 out of the 3 seeds I sprouted from the grow I had that pollinated one tryed flowering one turned male and the other refused to flower I'm chuffed as its a mind blown discovery for me

Sm4shMAN said:

It's quite funny I have recently grown a land race/early skunk Cross seed that went too flower on 16/8 out of the 3 seeds I sprouted from the grow I had that pollinated one tryed flowering one turned male and the other refused to flower I'm chuffed as its a mind blown discovery for me

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Ya 16/8 will put many strains into flower.

First one is the male I've been picking the wee sacks off second third is the flowering female and fourth is the non flowering female, the look abit acknowledged due too me spraying the spider mite they had with a strong very strong pesticide

growingforfun said:

Ya 16/8 will put many strains into flower.

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Yeah was new too that as I've always used that too veg right before I throw them in the small tent too get seeds quite chuffed tho got two different out comes from the same crossed strain

Thanks, for the replies, everyone.

You've satisfied my curiosity quite well.

Sm4shMAN, your three plants would confuse the hell out of me, haha. Glad you are tending them, as two of them would be wasted on me. (I'd just keep the 'easy' one).

Thanks again, guys.

Sm4shMAN said:

First one is the male I've been picking the wee sacks off second third is the flowering female and fourth is the non flowering female, the look abit acknowledged due too me spraying the spider mite they had with a strong very strong pesticide
View attachment 4396136 View attachment 4396137 View attachment 4396139 View attachment 4396140

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Your light needs to be around 5x stronger

Why make a simple thing complicated?

Me?

I'm not trying to complicate a simple thing. I'm trying to see if there is a good reason other than regurgitated mantras as to why we have the light schedules that we do. I was after the science of it, rather than the tried and true methods just 'because they work'.

As it turns out, after a little more research, I found that a lighting schedule called 'gas lantern' is exactly what I was enquiring about. It uses 12 hours on, 5.5 hours off, 1 hour on and 5.5 hours off again, (in veg mode), and 12 hours on and 12 hours off for the first two weeks of flower, decreasing the light by 30 minutes each week until they have 15 hours of darkness (9 hours of light).

It is not the "Longer Days For Flowering?" that my thread is titled, but it does answer my question (which I now know the right way to ask) which is "Yes. Plants can grow with SHORTER 'days'." and "NO. Plants DON'T need exactly 24 hours to complete a dark and a light cycle, they can do it quicker than that".

I said in my first post that I wasn't trying to reinvent the wheel but from the look of gas lantern grows, it probably wouldn't hurt to at least review the wheel. Sure, it works but can it be made to be better? Yes. There is a whole thriving industry built around it.

Let the experiments begin!

This is one of those hold my beer moments
I'll just watch, thanks

Sm4shMAN said:

First one is the male I've been picking the wee sacks off second third is the flowering female and fourth is the non flowering female, the look abit acknowledged due too me spraying the spider mite they had with a strong very strong pesticide
View attachment 4396136 View attachment 4396137 View attachment 4396139 View attachment 4396140

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I hate to get off topic here but man what did you spray those with? Especially in flower. I hope you intend to make seed and not smoke those flowers.

Well I won't be here for it. So you can probably just hold your beer yourself. I came here for an answer, I was answered, left satisfied with my answers and went off to learn more about what I was patiently explained. I was asked a question, it has been answered and if your beer needs holding it will be because some fanboy, learned in all the verses wants to flap her wings about. It won't be me though, because I don't do verses. I do Science.

growingforfun said:

Your light needs to be around 5x stronger

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Lol they're just some wee veging lights I've got for my clones and seedlings too veg under before they go under the 150w veging bulb in the cubboard below where my cloner and mother plants live before they go into my 4x4x6 flowering tent or my 2x2x4 breeding tent (not that it's used often) I've used 24w cool day light cfls for near a decade now never had a issue, my breeding tent has a 150w flowering cfl which is sufficient enough for what I require, my flowering tent runs 2x600w digital ballests 2-3 300w full spectrum led's, I get between 2-2 1/4 pound out of it every 12 weeks with 3-4weeks of 18/6 vegging and 7-8weeks of flowering. Feel free too have a look at my content tho always up for tips altho I never seem to get any theses days

Hashishh said:

I hate to get off topic here but man what did you spray those with? Especially in flower. I hope you intend to make seed and not smoke those flowers.

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Dont be daft lol I don't smoke anything I spray lol its just too clear the wee spidermite patches that I got from some eggs that got brushed off my clothes while trimming them up one day after I had done some gardening outside