Will 24 hrs light prevent an auto flower from flowering?

[GeorgeWBush]

I have never worked with auto flowering strain before but wanted to give them a try outdoors this year. I was in the outdoor forums and found this thread:

https://www.icmag.com/ic/showthread.php?t=27683

This guy keeps his girls from flowering if they lights are on 24 hrs. If he goes down to 22 or less they will start to flower. This way he can veg them longer and get bigger plants.

Is this how all auto flowering strains work, or is it an anomaly?

If there are only certain strains that this could be done with, which ones are they?

 

[Dr.Dank]

The autos I have flowered finished faster and bulckier under 24 hr of light and impossible to re-veg

 

[Hammerhead]

from what I have read no. Thats why there auto's no need to waste the PGE if your doing all autos. When the veg is done change the light 12/12

 

[Stress_test]

Well so far every response is correct.

Except for a couple variables because AF's exploit traits from the Ruderalis genes:
Lower temps will help inhibit full flowering over extended periods of time. I have kept pure Rudy's from flowering for a over 2 years.

The further from the Ruderalis genes you get and still retain the AF trait, the more a strain will adopt the more dominant genes of Sativa or Indica. Which will also give you larger plants, bigger more potent yield. However it also sacrifices the tougher, faster and smaller traits of the Rudy.

For a couple years I have been working on a "perfect" cross that gives a medium sized plant that can tolerate the cooler temps of spring and fall, and offers the shorter life cycle of the Rudy but gives the bigger and more potent yield of Indica and Sativa.

 

[Krull]

People keep confusing autoflowering with light sensitive strains (so called "semi-af" like Guerrilla Gold). Real autoflowering do their thing under 24/0 and thats the condition they should be tested to verify they are true.
You can keep the light sensitive strains vegging tipically under 20 or more light hours a day.

Peace

=K

 

[Stress_test]

People keep confusing autoflowering with light sensitive strains (so called "semi-af" like Guerrilla Gold). Real autoflowering do their thing under 24/0 and thats the condition they should be tested to verify they are true.
You can keep the light sensitive strains vegging tipically under 20 or more light hours a day.

Peace

=K

What are you talking about? I'm not confused about anything pertaining to AF's.

An AF is an AF, Semi-AF or any other version of Auto-Flowering cannabis, comes from the Ruderalis gene. Anybody who says otherwise doesn't know what they're talking about.

Through cross-breeding the Ruderalis genes can be introduced to create smaller hearty plants that thrive in cooler climates than their Indica/Sativa cousins, that grow from seed to finished bud in around 9 weeks.

By further out-breeding, the Ruderalis genes can be eliminated even further so that the only Ruderalis trait left is the auto-flowering gene. This means that flowering is triggered primarily by age rather than light/dark schedule. However: While AF's aren't dependent on the light/dark schedule, they are effected by it.

The only different between semi-auto and full-auto is merely the degree to which one out-breeds the Rudy genes. However my own tests indicate that a light schedule under 14 hours of light will almost always trigger flowering even on very young seedlings. Also, flowering with over 18 hours of light will dramatically reduce yield.

 

[greenmatter]

just my 2 cents because i don't play with the autos much. i was given a fast manitoba clone by mistake once. she started flowering under 24/0 and i gave up on her. never put much thought into rudy genetics but if you look at all the indi/sativa possibilities and the differences, you would almost have to think that rudys are just as diverse

 

[mitch_connor]

I agree with what Krull says here.., You have to catagorise them somehow as their charactistics are completely different no matter their lineage

There are day neutral AF's - True AF's , which will flower on 24/0 (or less) after a short time period from sprouting - 14-21 days usually
You can't delay their flowering
You can't clone them (You can but it's pointless)
You can't re-veg them
Lower temps won't extend their veg period - You will just get a smaller plant that will take longer to complete it's cycle with no benefit to the grower.
Bigger pots make for a bigger plant as they won't get stunted in their small veg period but that's about it.

Semi-AF/Early flowering Varieties:
Will veg if kept on 24/0 to a point (but is a much longer time frame before flower than a TRUE AF) - will start to flower on reduced lighting schedules
Can be cloned
Can be triggered to flower when rootbound.

Correct me if I'm wrong, but there are regular strains that are known to have the odd autoflowering phenotype.. AK47 for example, but are there any ruderalis genes in AK47?

 

[GeorgeWBush]

So then in the link in my first post, that guy has Semi/AF Afghani's? Where can I get something like that?

My goal here is to do something outdoors that I can start in spring and harvest early summer. Looking for something that has a good yield but also quality. Sour 60 was looking ideal. Whatcha think?

 

[mitch_connor]

early summer (July) you will only be able to harvest lowryder based AF's like Sour 60
or some of the newer 'Super Autos' from a breeder I can't mention here - Super Auto's are more sativa based and have longer cycle times - 12 weeks +

If you want a late August/Early september harvest then look into the early danish and canadian strains.

 

[Stress_test]

I agree with what Krull says here.., You have to catagorise them somehow as their charactistics are completely different no matter their lineage

There are day neutral AF's - True AF's , which will flower on 24/0 (or less) after a short time period from sprouting - 14-21 days usually
You can't delay their flowering
You can't clone them (You can but it's pointless)
You can't re-veg them
Lower temps won't extend their veg period - You will just get a smaller plant that will take longer to complete it's cycle with no benefit to the grower.
Bigger pots make for a bigger plant as they won't get stunted in their small veg period but that's about it.

Semi-AF/Early flowering Varieties:
Will veg if kept on 24/0 to a point (but is a much longer time frame before flower than a TRUE AF) - will start to flower on reduced lighting schedules
Can be cloned
Can be triggered to flower when rootbound.

Correct me if I'm wrong, but there are regular strains that are known to have the odd autoflowering phenotype.. AK47 for example, but are there any ruderalis genes in AK47?

Consider yourself corrected on every point.

Nearly every aspect of your post is complete myth and incorrect.

It isn't a popularity issue, or an issue of opinions... Nor is it an issue of speculation. It is an issue of genetic facts that are consistent regardless of whether or not somebody agrees with them. ALL auto-flowering traits descend from the Ruderalis genetics regardless of the degree to which a strain exhibits the genes.

* I consistently clone pure Ruderalis plants with 100% success.
* I consistently re-veg 50/50 Rudy crosses.
* I have 3 50/50 Rudy cross mothers that have been held in veg in excess of 2 years.
* Bigger pots can and will slow or even stunt most Rudy crosses, if the pot size is too large, as the pot never dries out and the roots rot. Rudy crosses are far more prone to over watering than others because the origin of the plant is harsh mountain climate.
* The Ruderalis strain is a cool climate plant. Although lower temps do slow growth slightly, plants grown in cooler temps will grow slightly larger, more potent yield. The yield size is pretty much unchanged. The biggest advantage to this trait is that it allows OD growers to plant about a month earlier, or harvest much later in the fall in temperatures that would be devistating to more common Indica or Sativa strains.
* I veg my Rudy crosses 4 to 5 weeks before flipping them.
* I cut an average of 100 clones every 15 days from 3 mother plants, for a local co-op dispensary. My mothers are PK x, NL and ak47 crossed w/Ruderalis.

 

[skotty]

* Bigger pots can and will slow or even stunt most Rudy crosses, if the pot size is too large, as the pot never dries out and the roots rot. Rudy crosses are far more prone to over watering than others because the origin of the plant is harsh mountain climate.

i love that if that was the case my hydro plants would be fuked lmfao

 

[mitch_connor]

Stress Test, all my answers on what a Lowryder type Autoflower are.. are not myth and incorrect. I've grown them for 5+ years. and i know from experience and testing what works and what doesn't.

If you're working with Pure ruderalis that's another thing.. but todays AF's are not.

The OP's question was 'will 24 hours light prevent an auto flower from flowering'

Answer: For a semi AF ..yes to a point.. Like the Auto Affies he was linking to
For a True (lowryder type) AF.. no.

End of.

 

[kedja172]

with autos light will = growth, i keep mine under 24h light and as much light as possible.

 

[GeorgeWBush]

Stress Test, all my answers on what a Lowryder type Autoflower are.. are not myth and incorrect. I've grown them for 5+ years. and i know from experience and testing what works and what doesn't.

If you're working with Pure ruderalis that's another thing.. but todays AF's are not.

The OP's question was 'will 24 hours light prevent an auto flower from flowering'

Answer: For a semi AF ..yes to a point.. Like the Auto Affies he was linking to
For a True (lowryder type) AF.. no.

End of.

Are these semi AF's available for purchase, or would I have to make my own?

 

[Leroy Brown]

i love that if that was the case my hydro plants would be fuked lmfao

No, you'd really be fuked if your hydro plants could be overwatered

 

[Leroy Brown]

REALLY interested in seeing how this plays out, this is of great interest to me.

I've was interested in the Iranian auto (Claims to veg great & produce nice clones under strong 24hr's but will flower @ any less), but the price caused me to do some more research. I began to suspect that the breeder set up a few accounts on forums & pumps the same info which others than regurgitate. Seen it before on forums..........



............. so who's got pic's? I'd like to know more about the Rudy's. One thing I don't understand & if someone could explain..... How far back rudy genes could have been slipping in to some of this stuff? And couldn't they have all came from one cannabis plant like thousands of years ago so does that impact anything?

 

[Stress_test]

REALLY interested in seeing how this plays out, this is of great interest to me.

I've was interested in the Iranian auto (Claims to veg great & produce nice clones under strong 24hr's but will flower @ any less), but the price caused me to do some more research. I began to suspect that the breeder set up a few accounts on forums & pumps the same info which others than regurgitate. Seen it before on forums..........



............. so who's got pic's? I'd like to know more about the Rudy's. One thing I don't understand & if someone could explain..... How far back rudy genes could have been slipping in to some of this stuff? And couldn't they have all came from one cannabis plant like thousands of years ago so does that impact anything?

I haven't ever grown the Iranian Auto and haven't even really ever seen a grow report on it. But from my experience and a couple things in your post I can extrapolate a few things about the genetics.
First of all: The Ruderalis is about the hardest pot plant there is to clone, even at very young ages. So any plant that "is" easily cloned "and" is also an AF; will also continue to veg under 18 hr cfl's. Even though they will produce calyx and pistils at bud sites while vegging.

Most available "stable strains" of AF's will in fact begin preflowering under 24 hr light, but will continue to veg almost indefinitely like other Sativa or Indica strains. The further from the Rudy parent you get, the less prominent preflowering is.

I have seeds for a couple generations that will start flowering at 3 weeks from seed under 24 hr HID and finish out in about 90 days. The issue is with genetics that close to the pure Rudy is obvious; small runty plants that produce shit weed like the LR did.
But a couple generations later and I have seeds for a hearty auto-flowering plant that can handle way lower water and harsher climates of early spring or later fall, and produces a superb high and an average yield. One which is still a true AF, and offers faster grow/life cycle that isn't "as" dependent on the perfect growing conditions.

I'm not saying that it's okay to breed a horse with a camel so you can ride more comfortably in the mountains and further in the desert too.

But it seems that so few people are open minded enough to consider that there are 3 genetic strains of marijuana, not just the 2 favorites. And the traits of the 3rd are the most neglected and are also the strongest of the 3. I mean everybody is all gung-ho about breeding in pretty flowers or fruity smell, I don't get why everybody has an issue about breeding in stronger genetics.

Hands down I will make the bet with any grower alive: Plant 5 each of Sativa, Indica and Ruderalis. Separate them into 5 groups and torture the hell out of them. Extremes for Hot/cold, Dry/wet, over feed/under feed, then light stress em.
If you're brave, even expose em to some common pests like thrips, aphids, and mites. Do everything as badly as possible but just to the point where 1 one the group really begins to struggle.

I guarantee that you will have 5 healthy Rudy plants and 10 sickly stunted plants. If you stress em until the Rudy struggles then you will kill the others.

What I post here in the forums is from knowledge I have gathered and from experience. I am willing to share what I know for the benefit of who ever wishes to use it. But the best knowledge is always from experience, so for those who wish to argue, I suggest simply to prove me wrong.
The challenge above is a modified somewhat extreme method used by most seed producers to eliminate weak genetics within a strain, including genes prone to hermying.

 

[Claude Hopper]

What temperatures are we talking about to delay flowering?

I know that regular strains will flower at very cold teperatures. I did a seed run on my pure sativa in an unheated room this winter with temps often near freezing.