Myth Busting - Revegging Autoflowers

[rusty shanty☆]

Soooo are we gunna do this experiment or not?

I would like to see it done. Problem is we already know the answer. Genetics. If it is a true auto where flowering is based on the time period it won't reveg. I'll gamble on it....but obviously not real money. Rep gambles! I bet 2k rep. Heheh

 

[Kinezokyprios]

All I know is that when I tried it was bitter, more than cannabis would normally be when it has a hoppy terpene profile.
This is not so strange, it happens sometimes with plants grafted on their relatives. If you graft tomatoes, eggplants and peppers on a prickly nightshade (solanum Torvum), a wisely used practice, the fruits sometimes have an unusual bitter taste and not the sweet one you usually associate with them.
In any case these are other people's experiments not mine so I can only comment on the results I sampled.

 

[Kinezokyprios]

As far as genetic manipulation is concerned, I have read about labs experimenting with polyploid cannabis strains, to reach 40+% thc. Would I ever try? I doubt that.
Creating perennial strains is different though. I do not consider it feasible, since nature and human selection failed to create one up to today. I believe that cannabis doesn't have such a potential naturally and genetic manipulation will have to introduce genes from other species for this. I am not an expert but my opinion is that nature would have done it already if it was possible. I wouldn't try so easily such a product if there is a suspicion that alien genes have entered the cannabis genome.

 

[pop22]

Apparently its not that great a technique or everyone would be doing it. As stated in the link I posted:
Most growers who have tried grafting Cannabis and Humulus are unsuccessful. Compared to many plants, Cannabis does not take grafts easily. Most of the standard grafting techniques you've probably seen for grafting Cannabis simply don't work. For example, at the University of Mississippi, researchers failed to get one successful graft from the sixty that were attempted between Cannabis and Humulus"

If scientists can't do it easily, no homegrower is going to either, This was debunked years ago. And no, the plants do not transfer and compounds between them, hops don't aquire THC etc from the cannabis, nor flavinoids etc transfer from the hops as these compounds are not circulated by the Xylem and Phloem.

Grafting on a hop vine is not something new and is basically no different to grafting one strain of cannabis on another. Perhaps hop is better in a sense since it can get much bigger than cannabis in size and would not reject the graft as easily as a cannabis plant would do. But on a perennial strain of hops that will overwinter, you have to graft every spring new cannabis grafts, since the cannabis shoots will not survive winter easily. That is not cold related but light related. They will bloom and die after. Revegging them is not guaranteed since they do compete with the much more numerous hops shoots and it is difficult to provide the adequate light schedule for revegging outdoors. Doing this indoors is not feasible as a cost and space requirements. Hops do get very big. An annual strain for beer stays relatively small and is hemp-like but a perennial is usually a decorative plant that is used to cover fences with its vines and gets really huge. And it's woody branches are not so welcome for grafting.
Buds from such grafts are potent, as much as the original strain, but their terpene profile is too hop/bitter beer like and not so pleasant to smoke.

 

[pop22]

No they won't. see above.

That's crazy, so the buds grafted onto hops will actually produce some of the same terpenes as in hops?

Have you ever tried Hemporer beer? Brewed with hemp oils.

 

[Kinezokyprios]

Apparently its not that great a technique or everyone would be doing it. As stated in the link I posted:
Most growers who have tried grafting Cannabis and Humulus are unsuccessful. Compared to many plants, Cannabis does not take grafts easily. Most of the standard grafting techniques you've probably seen for grafting Cannabis simply don't work. For example, at the University of Mississippi, researchers failed to get one successful graft from the sixty that were attempted between Cannabis and Humulus"

If scientists can't do it easily, no homegrower is going to either, This was debunked years ago. And no, the plants do not transfer and compounds between them, hops don't aquire THC etc from the cannabis, nor flavinoids etc transfer from the hops as these compounds are not circulated by the Xylem and Phloem.

Grafting is not so difficult. The problem with cannabis grafting is not technical you can do it with at least two techniques. The problem is to select the right grafts. I personally haven't tried grafting cannabis on other species like hops, only smoked the result once. But I have tried grafting one strain on another. The results were mixed but the successful ones were exactly what they were supposed to be in quality. But selecting the right graft was really hard.
To start with I failed almost 100% when grafting on sativa plants, whereas on indica plants things were better.
Grafting shoots on the branches failed almost completely. I suspect this is because cannabis cannot survive in the cold conditions that this technique requires to succeed. I suspect that instead of suspending their vitality cold storage of grafts was killing them and the plants used to graft on were stunted by cold and not strong enough to receive the grafts.
Making T shaped incisions on the bark and inserting the bark from the "armpits" of branches or leaf stems, was successful but only at 10%. So no point to deprive a branch from a well established plant.
Making T shaped incisions and inserting pieces of bark from the lower parts of the main stem, proved 100% successful, but only if you manage to detect the spot on the bark that contains an "eye" that will grow into a branch. That is very difficult on cannabis and needs practice on other species that have similar bark development, like okra.
Grafting leaves is dead easy but pointless since they will not develop into a branch with buds, only the leaf will keep on surviving for as long it is supposed to survive.
However these were experiments I did years ago and I wouldn't bother now. They are nice to play and at the same time master the secrets of growing, but when it comes to yield they don't offer anything more than the debatable result of variety of smoke.

 

[microgrowshow]

On Facebook recently, a grower claimed that he's been re-vegging his autoflowers and that it can be done with all autos.





The alleged trick is to keep the light on 24/0 and switch back to veg nutes.

This sparked a TREMENDOUS amount of replies, with a very small percentage saying "oh yeah, we've done this too" and the majority saying "bullshit." Absolutely no one has provided any proof during any of the conversations about it however. The comment about it reverting back to the "prized photo period" was a bit of a stretch lol.

Personally I think some growers are seeing unstable autoflowers, or what's essentially a "semi-auto." Ruderal characteristics but it's still a photo by definition (needs to flip to properly finish.) We've seen it dozens of times over where growers have an auto that doesn't auto, and every time you treat it like a photo and it's good to go. So really, at that point is it still considered an autoflower? I think this is what a lot of growers are seeing when they say "oh my plant re-vegged" or "I have an autoflower mother I keep taking clones from for years," that it was sold and labeled as an autoflower, but that it's a photo dominant strain. Perhaps a bit of semantics?

I've seen autos start to push out new leaf growth at the end of their lives, but personally I take all my meds longer than normal (more amber) than probably most do, and I've yet to see them reveg. I've left autos in pots where they've eventually died (way past harvest window) and they never revegged. Doesn't explain partial harvests either.

But then we were talking about it in the staff room and @Mossy mentioned she had an auto start to reveg going from natural sunlight (outdoors) then moved inside to a grow light (and more hours on than what it was getting.) Very curious stuff.

What do you think? Ever see this phenomenon happen? Truth and merit to the claim, or stoner science? Chalked up to genetic anomaly? Or able to be replicated?

So I actually had this happen to me this summer.. I started two Critical Jack Herer Autos from Delicious seeds indoors in June. Around day 21 I spotted my first signs of flowering on the biggest plant. 4 days later I decided to bring it outdoors to finish its life since I realized my tent wouldn't be able to fit both in flowering. I live in an apartment building without a balcony, so I brought it up to my parents (which is about a 40 minute drive so extra stress there). 3 days after being put in the backyard, I went to go visit and was shocked to find that all of the pistils were somehow gone. It took about a week and it went back into flowering.

I ended up yielding 16 grams from that plant, whereas the indoor one yielded 112 grams with a 100 w LED. So yes this can happen, but you NEVER want it to, as you can clearly see from my pathetic yield

 

[Fitzy]

So I actually had this happen to me this summer.. I started two Critical Jack Herer Autos from Delicious seeds indoors in June. Around day 21 I spotted my first signs of flowering on the biggest plant. 4 days later I decided to bring it outdoors to finish its life since I realized my tent wouldn't be able to fit both in flowering. I live in an apartment building without a balcony, so I brought it up to my parents (which is about a 40 minute drive so extra stress there). 3 days after being put in the backyard, I went to go visit and was shocked to find that all of the pistils were somehow gone. It took about a week and it went back into flowering.

I ended up yielding 16 grams from that plant, whereas the indoor one yielded 112 grams with a 100 w LED. So yes this can happen, but you NEVER want it to, as you can clearly see from my pathetic yield

That sounds like it wasn't bread out far enough I have seen this with f2 mephisto genetics but interestingly I have a cross from that same strain that flowers 100% auto and turning off lights for even a few days doesn't change anything where in the original strain if I shut light for even 2 days it's does thisATTACH=full]1237896[/ATTACH]

Also the lack of sun is most likely why the yield was so different aswell as pheno variation. Also I'm not sure how pistols would disappear I've never seen that in over 15yrs of growing and I've revegged alot of photos and even cloned @ harvest and wat ever pistols were there they never left or fell off I have 2 right now here are pics

these have been put in veg 3wks ago and as u can see they have all there pistols and caylaxes so that's odd yrs did that I've also tried leaving larf on a auto that I brought to f3 not sure wat f generation it was prior but I tried to re grow it and it just died I have 1 right now I'm going to try it with will post pics in a bit 1pm EST my lights come on so I will trim buds off and give it veg nutes ect it's in all organic mix with water only for last 2wks

 

[Fitzy]

So as I said I would give it another go this is a double grape cross that did well in its test both original strains are from reputable breeder I snipped all buds today let's see if she will reveg I've feed water only for 2wks or more so we will see wat happens

 

[henry50]

I done a whole lot of writing and put it in the wrong place, sorry. Those look amazing.