question

Reverted my plant into vegetative stage after 3 days there, which mean two days 12-12, tonight 12-3-9, and tomorrow again 18-6, Should I worry about self fertilization ?

no. not really... you did this to check the sex of the plants?. Or was it an accident?...

Stable strains can often take lighting changes from high light hours to low without harming the plant.. / or sending it into Hermaphrodites /..

more details to your question..

edit

My original questions was very immature, and reading a bit more was answering those questions, that's the reason I edited my question to the things I still had no answer to.. Its not like anyone answered those questions I putted there anyway.. I didn't remove or hide anything.
I am a first time grower, I grow my one plant like a tall motherfucker because I am terrified to crop it, so please don't judge me .

(asked basically if its possible to revert it into vegetative stage (yes) and wrote I don't know where to clone it from since I have no branches (I will chop the head tonight, like you offered))

Anyone have any good tips on how to manage without ??

powder will work.. All garden centers have this stuff..

you can wing it with plain water, just keep changing the water.

No powders here either.. and we been in the biggest plants shop here.
Heard saliva works before entering it to rockwool, did you hear anything about it?

ok.....the op was unclear..also...no questions is too simple or immature...cropping will only set you back a week at most and is recomended after the plant has 3 nodes of leaves....do not be afraid to top your baby ...


1.how tall is the plant
2.why did you change the lights?
3are you moving her outside to finish?
4if yes...where ..as in what part of the world...


...the reason i asked 4 is because you now have aprox 90ish days till oct 1....plenty of time to chop the top off that plant leaving 3ish inches of stem on the top part and make a new plant with the top half...buy rooting hormone at any garden place and you will have a second plant...an even simpler but slower method is too cut the top off the plant [just above a node] and put the top piece in a cup of water...it will live just fine on a window sill and after 10 days it will have new roots and you can transplant it at that time...slower than cloning but more foolproof........


...the new branches will appear on the bottom part within 24 hours and will be actual stems within a week...you will have a 2 headed monster to harvest next fall....after the new plant is on solid ground you can top that one as well

you have rockwool. Just keep it wet from the top and bottom down.. It will root in a cube with plain water..

saliva will spread germs to plant. so NO.