The Myth About Light Leaks

tstick

tstick

Well-Known Member
Up until the time when growers started focusing on growing sinsemilla back in the 70's, most all weed was seeded, landrace weed that had been stabilized by nature after many generations. Growers started mixing up everything with hybridization and they intervened on the natural pollination process. In the absence of males, some of these mixed-up, female hybrids started to switch on their secondary reproduction systems. It was something that was always there within the genetic code, but hadn't ever been needed when landrace plants were cultivated outdoors in their natural environment and allowed to do their own thing. Unfortunately, some of the hybrids were random and many turned out to have enhanced tendencies to throw 'nanners. Now that hybrids are many generations deep, there are all kinds of surprises that pop up out of nowhere like a red-headed stepchildren! :)
 
keifcake

keifcake

Well-Known Member
Haven't read all 5 pages, but light leaks causing herms is BS for sure. I dont even close the doors on my tent all the way, the bottom and up to about a 1/4 is unzipped , plenty of light leaks in there for sure.
A lot of times i remove a plant to finish flowering outside the tent to make room, the door will be left open up to a couple hours mostly everyday before I'm up to mostly close it.
I rarely get herms or nanners
 
B

bignugs68

Well-Known Member
I have this unproven hunch that it's all about what style they're introduced to when they pop through the dirt. If it's a consistent environment then the plant never goes through shock/stress. Shock/stress is what I've read will trigger it. Anyone that's grown outside knows even in BFE, the moon prevents the darkness of a tent or closed off room. Plus you got cloudy nights, days etc with wide variety of direct sunlight. I think indoor plants during lights off are more sensitive to exposure because it is one extreme to another.
 
hillbill

hillbill

Well-Known Member
I’ve had timers lose their mind and turn on during Lights Off. That really fucked things up, worse since I run Perpetual.
Outdoor Manual timers with cover, preferably Brinks, are all I use.

Little pinholes are meaningless, especially in a dimmerhost room.
 
Thatoneguyyouknow_

Thatoneguyyouknow_

Member
Hitting some Controversy by the 3rd post. Go me.


feel free to call me non credible, but small light leaks, especially if consistent night to night are not going to cause anyone problems. Wether your plant is going to shoot some male flowers early on, or it has the potential to shoot the stress nanners later on is rooted entirely in the genetics of the plant. And no small consistent light leaks are going to affect that either way, and it's not going to stress your plants. I've had plants that tend to hermie from stresses later in flower. I've had plants that won't even if you intentionally almost kill them. Some throw bananas at such light amounts of late flower stress you'll never have a legitimate chance at understanding what variable encouraged it, and it IS very easy to wrongly blame small light leaks when this happens. But it's rooted in your genetics not your setup most likely. Perfect start to finish runs are actually quite rare. Most growers never actually have one. It's prob not light leaks causing your nanners.

Ive had to shut off lights in an emergency far days at a time before, and only some of my plants shot bananas by the end, and it was the plant i expected it to come from.

Bouncing your photoperiod around absolutely can be a stress factor triggering some nanners in a plant. Consistent small light leaks throughout a grow will do no such thing though. Not in my over 20 years of experience, both in the home and commercial, has this ever once appeared to me to be the defining variable in a stress hermie flower.

Small light leaks being a stress factor in hermaphrodite plants is 1000% a myth, but it's easily understandable how it became so perpetuated considering the many other equally misunderstood characteristics of this plant we all love. I still run into experienced growers these days who were not aware there are more then one kind of hermaphrodite and they express quite differently, and at different parts of the grow, or that Male plants can also hermaphrodite and grow small numbers of female flowers and also produce genetically male seeds. I've only seen it twice. But i've still seen it happen.


I will laso say there is a reason i mainly run with beans i made myself and i avoid modern feminized stableized genetics in lue of phenotype hunting repeated generational F1 crosses. And im very careful (usually) what plants i have made feminized plants from. And i have tended to clone propagate chosen phenotypes from Fem genetics, only if they are genuine F1's. I have high test F1 feminized beans with the columbian land race in the genetics (as female pollen donor) that wont hermie even if you turn the lights off and let them die starting at week 5. But i also have some modern fem beans with buds sometimes close to 40% thc that sometimes throw bananas in late flower if you even look at them in the wrong tone of voice
 
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conor c

conor c

Well-Known Member
Joeybliss said:
There not enough linens in moon light that why we can use green light on grow tent during light off
Click to expand...
Not quite the reason we can use green light is because cannabis doesn't use much of the green spectrum of light thats why it dont bother them your right about the moon not putting out enough lumens tho bud
 
cat shit

cat shit

Well-Known Member
Guitar Man said:
I've read countless threads and comments about why an MJ plant will Herm. When I first started growing 11 years ago my first indoor grow went Herm wild on me. All 4 plants produced balls and seeds and I came here to find answers. The conclusion? Find those damn light leaks!!

So I go on a rampage, finding every single sliver of possible light that might sneak into my grow room. The conclusion? The plants still went Herm on me, even after making sure my plants went to sleep in total darkness.

Then I go to the next stage of my grow experience by growing outdoors, using the same seeds from my indoor grow. During the grow and at harvest I didn't find a single ball or seed on any of the plants. This puzzled me but became my here and now answer to this problem. After growing indoor and outdoor for a few more years the same situation prevailed; balls and seeds on my indoor, but not outdoor, unless, the outdoor plant went through a super stressful event, like intense heat. And even then, only a minute Herm event on the outdoor plant.

I also observed the light that would hit my outdoor plants during the evening hours when flowering was taking place. Our home windows are right next to the plants we grow and we never covered the windows to stop the light from tagging the plants. This is where I really began to put the pieces together. If my outdoor grow is just fine with being hit with an outside light source and NOT Herm, I began to realize that light leaks were not my problem.

Well, many years later, through trial and error, my conclusion is light leaks DO NOT cause a plant to Herm, indoor or outdoor. It's stress, period.

And the indoor stress that is wholly responsible for a plant throwing out some balls to pollinate itself is LIGHT. Not a light leak, but your grow lights. This unnatural enviroment where we use intense lights to produce fantastic buds is your Herm enemy.

Now, this part of my post doesn't have anything to do with my above reference, but I actually like when my indoor grow will throw out some balls to give me some seeds. Why? Because they are feminized and the exact same strain I'm growing. The more I grew, the better I got at using the Herm to give me more of the same for my next grow.
Click to expand...
I only flower in 3/3 tents if I'm not doing autos I cover the whole tent in black light proof plastic and works like a treat, no hermies since I used this method, also adds a little insulation from the cold. Probably not very practical for larger tents but brings peace of mind and every pinprick hole, potential gaps in lower vents port holes all light proof
 
Mason Jar 92705

Mason Jar 92705

Well-Known Member
Thatoneguyyouknow_ said:
Hitting some Controversy by the 3rd post. Go me.


feel free to call me non credible, but small light leaks, especially if consistent night to night are not going to cause anyone problems. Wether your plant is going to shoot some male flowers early on, or it has the potential to shoot the stress nanners later on is rooted entirely in the genetics of the plant. And no small consistent light leaks are going to affect that either way, and it's not going to stress your plants. I've had plants that tend to hermie from stresses later in flower. I've had plants that won't even if you intentionally almost kill them. Some throw bananas at such light amounts of late flower stress you'll never have a legitimate chance at understanding what variable encouraged it, and it IS very easy to wrongly blame small light leaks when this happens. But it's rooted in your genetics not your setup most likely. Perfect start to finish runs are actually quite rare. Most growers never actually have one. It's prob not light leaks causing your nanners.

Ive had to shut off lights in an emergency far days at a time before, and only some of my plants shot bananas by the end, and it was the plant i expected it to come from.

Bouncing your photoperiod around absolutely can be a stress factor triggering some nanners in a plant. Consistent small light leaks throughout a grow will do no such thing though. Not in my over 20 years of experience, both in the home and commercial, has this ever once appeared to me to be the defining variable in a stress hermie flower.

Small light leaks being a stress factor in hermaphrodite plants is 1000% a myth, but it's easily understandable how it became so perpetuated considering the many other equally misunderstood characteristics of this plant we all love. I still run into experienced growers these days who were not aware there are more then one kind of hermaphrodite and they express quite differently, and at different parts of the grow, or that Male plants can also hermaphrodite and grow small numbers of female flowers and also produce genetically male seeds. I've only seen it twice. But i've still seen it happen.


I will laso say there is a reason i mainly run with beans i made myself and i avoid modern feminized stableized genetics in lue of phenotype hunting repeated generational F1 crosses. And im very careful (usually) what plants i have made feminized plants from. And i have tended to clone propagate chosen phenotypes from Fem genetics, only if they are genuine F1's. I have high test F1 feminized beans with the columbian land race in the genetics (as female pollen donor) that wont hermie even if you turn the lights off and let them die starting at week 5. But i also have some modern fem beans with buds sometimes close to 40% thc that sometimes throw bananas in late flower if you even look at them in the wrong tone of voice
Click to expand...
The best post in this thread.
 
8Rhizome8

8Rhizome8

Member
You know?! Reading this thread just brought me back to a time when an old Spanish speaking cannabis-hating neighbor sabotaged my entire grow. I had a greenhouse that was flush up against the wood fence that divided our properties. It wasn’t necessarily within proximity of their windows but let’s face it, my grass stinks!

I couldn’t figure out why my plants were herming left and right. It was an anomaly. I know enough Spanish to know that that family hated cannabis. Staunch drug free Catholic types. One evening after throwing my gutts up after eating bad seafood I noticed something. Shining through my bathroom window as I looked up from all fours I noticed that my neighbors back porch four foot fluorescents were on. Within minutes they turned off. Thirty minutes later they turned back on again.
Motion sensor? I had to look. No…. they had set a timer to flip their lights every half an hour. Which in essence slow-strobed my greenhouse. I lost some really good lines that season.
Bastards.
 
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Billytheluther

Billytheluther

Well-Known Member
8Rhizome8 said:
You know?! Reading this thread just brought me back to a time when an old Spanish speaking cannabis-hating neighbor sabotaged my entire grow. I had a greenhouse that was flush up against the wood fence that divided our properties. It wasn’t necessarily within proximity of their windows but let’s face it, my grass stinks!

I couldn’t figure out why my plants were herming left and right. It was an anomaly. I know enough Spanish to know that that family hated cannabis. Staunch drug free Catholic types. One evening after throwing my gutts up after eating bad seafood I noticed something. Shining through my bathroom window as I looked up from all fours I noticed that my neighbors back porch four foot fluorescents were on. Within minutes they turned off. Thirty minutes later they turned back on again.
Motion sensor? I had to look. No…. they had set a timer to flip their lights every half an hour. Which in essence slow-strobed my greenhouse. I lost some really good lines that season.
Bastards.
Click to expand...
Hate to hear about that man, but they can do as they please..
thats why light deprivation is a thing..
fuck light pollution
 
conor c

conor c

Well-Known Member
8Rhizome8 said:
You know?! Reading this thread just brought me back to a time when an old Spanish speaking cannabis-hating neighbor sabotaged my entire grow. I had a greenhouse that was flush up against the wood fence that divided our properties. It wasn’t necessarily within proximity of their windows but let’s face it, my grass stinks!

I couldn’t figure out why my plants were herming left and right. It was an anomaly. I know enough Spanish to know that that family hated cannabis. Staunch drug free Catholic types. One evening after throwing my gutts up after eating bad seafood I noticed something. Shining through my bathroom window as I looked up from all fours I noticed that my neighbors back porch four foot fluorescents were on. Within minutes they turned off. Thirty minutes later they turned back on again.
Motion sensor? I had to look. No…. they had set a timer to flip their lights every half an hour. Which in essence slow-strobed my greenhouse. I lost some really good lines that season.
Bastards.
Click to expand...
Essentially they were stress testing them for you that's harsh man hope you got better neighbours now
 
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