When does flower start

The flip is to signal the plant veg is over. Do not change nutrients etc.(SORRY GROW GECKO) when you flip to 12/12. continue with veg nutes till stretch is over,or you will most likely get nitrogen defficiency. it's normal for plants to take longer for flowering bc breeders know faster flowering sells better, so they cheat a few weeks. Especially for an amnesia your plant looks on track, still 8 weeks to close the gaps between budsites and you have many, well spaced, so they will grow to one big bud. Keep an eye on humidity, over 50 is a problem, especially in the last weeks. Big buds getting overripe(the more amber) tend to but rot quickly. But since it starts in the middle most people don't even know and will smoke it in the end.

Hey grüß dich. Für Dünger und Zusätze ist der erste Tag der Blüte, der erste Tag 12/12. Wenn man bei den Breeder Angaben aber den ersten Tag ab der sichtbaren Blüte zählt, stimmen die Angaben ungefähr. Der gleiche Strain kann sich aber auch um 10 Tage unterscheiden, je nach Pheno.

Yes u are right. Most people count the flowering period starting from the first da 12/12. So if the breeder say 8 weeks it means 8 weeks from start of 12/12. In reality that is under good conditions and can vary weeks from pheno to phontyp. I got a gsc from seedstockers that should have 9 weeks of flower and i was finsihed at 12. That was a extrem case. So check the trichromes and harvest when 10-30% truen ember depens on your tase and dont get mad about the time. I wish u good luck.

To be quite honest with you, it doesn't matter how many days it takes to finish. What matters is you harvest when the plant is actually finished. If it takes 2 weeks longer than what was stated and you harvested prime grade bud, you would have likely been a bit disappointed if you harvested it 2 weeks ago. You can use the breeder's harvest time as a reference to get an idea of "about" how long it will take to finish ... but good growers will not chop until the trichomes look the way they want them to when viewed under magnification. I like mine "cloudy with a few specs of amber... maybe up to 10% of the bud trichomes amber." Others might like theirs more cloudy with a touch less amber. Regardless most people will tell you that if the majority of the bud trichomes are clear .... wait. If you own a smartphone, look into purchasing a wireless wifi microscope/camera. Mine cost me approximately 35 bucks from Amazon. It really comes in handy.

Looks perfectly fine for 4 weeks from flip, expect an Amenesia Haze to go about 12 weeks from flip to harvest. Always count from flip if you want consistent logs with accurate finishing times you can actually use as reference in the future :) I would worry about the nanners though! A lot! Sometimes you can pick them off and get through without pollination, but if they start throwing pollen ALL of your bud will be seeded and it will be extremely annoying to smoke/vape/squish the bud.

A good way to view the flowering period is a standard ~9 week flower where the first 3 weeks can be considered a stretching or pre-flowering period and the remaining weeks your 'flowering-proper'. In reality it is all flowering, with the exception of hormone transport and such that begins with the flip not being instant. Different mediums and environments certainly play into a particular plant's flowering timeline. The length of day is also a large factor in flowering given a particular plant (i.e., shorter days incentivize faster growth with the clear tradeoff of energy available). I'd expect breeder numbers to include a rushed, closet-sized plant stuffed with proper feedings and hammered with appropriate DLI with the shortest measurement possible given to consumers. Much like puffery on resumes, once a single breeder starts this downhill battle then all breeders are disadvantaged if they do not participate. The long answer is that photoperiod cannabis has a plethora of unexplored areas for research. We are seeing some landrace adjacent strains recirculating with 16 week or longer flowering times. We have hemp researchers flipping flowering timelines on their heads with unorthodox flowering periods. I even have a strain I usually run from flipping to chopping fully mature at 49 days with a special photoperiod cycle of my own - believe it or not, there is a ton of research to be done in this area.

when i follow by the pistils, im normally harvesting a week earlier. but if i do it by the time i flip to 12/12 then im harvesting a week late give or take. so i normally just decide that theres a 1 week transition period and a 3 week preflower or stretch period and im still giving veg nutes plus bloom nutes at this point to acct for the stretch and preflower and transition phase.

Breeders start their count when they flip to 12/12. Don't worry if yours take longer. The number of days is usually considered under "Ideal grow" parameters. Once you're able to dial in your grow consistently, your plants will finish closer to what the breeder estimates.

The 1st day of flower is when you see pistil clusters. Many growers just start counting flowering from the day they switch the lights over to a 12/12 schedule. One of the earliest signs of the flowering stage is the emergence of pre-flowers. Pre-flowers are small, underdeveloped versions of the flowers that will later develop into buds. They appear at the nodes, where branches and leaves meet the main stem. Ignore mentally ill trolls.

LOL, they are absolutely flowering once the hormone feedback loops causes it to happen, which is what the extended darkness causes. this is what bro-science does. It ignores existing reference information that anybody can look up and just fabricates an answer not tied to facts. I know this is hard for some people, but it's not always about what you can see and the superficial. Those flowers are being built before you can see, them, therefore the plant is in flower before you can tell with your eyes. this is not an opinion. It's plant biology. A hormone is produced in darkness. If it accumulates to high enough levels, when given a long enough dark cycle, it causes flower phase to start. It is a positive feedback loop. This is not unusual or rare in biology. Our bodies have those sort of stuff going on too for various reasons. human senses are not the best way to determin this, lol. they are limited and lacking the resolution necessary. When the switch is flipped, it's in flower phase. If it takes more than 1 long night, i'd be suprised. It certainly doesn't take long because otherwise the preflowers wouldn't pop up 7-8 days later. Growth doesn't manifest out of the ether. It takes time to develop and preflowers don't grow overnight.

Honestly how you track it is strictly a personal preference. Many mark it at the beginning of 12/12 and others do once signs of flowering begin. I practice the later. I find breeder estimates are a little closer to accurate when I do.

When the actual flowers start growing. Flipping to 12/12 is just a step in getting them to flower, they are not flowering just because you have changed the light cycle, flowering usuall start 10-20 days after the change to 12/12.

biologically, it happens when you give the plant a long enough dark cycle. What you see comes 7-10 days later as it cannot manifest out of the ether. It has to grow. Week 4 is a bit early to judge. If it's a slower flowering plant, it can still add quite a bit, and even an 8 week variety isn't quite done packing on the weight, yet, either. if you plants are healthy and you don't do weird bro-science shit that delays flower, you probably just picked slower flowering plants as opposed to you causing it to be slow. Go look over old photos from same point in previous grows... it's a good reminder of expected development. (your grows. not others) YMMV

I'm sure you have just answered your own question my friend. Either give 2 weeks more or start counting 2 weeks later after the flip to 12/12... Hope this clarifies it for you.