How long does a photoperiod take?

Titled. I at first considered light schedule and photoperiod are almost a meaning but now I mixed up. What is photoperiod? when should i begin the photopreriod, any sign of the plants will tell? And how long does a photoperiod take and when photoperiod will end?

I knew i can google for the answer and i did, but i didn't make sense of it totally. Thanks for all answers.

Start here:

Wth?

They take an average of 60-75 days of 12/12 lighting until harvest. Plus around 30+ days of veg from seed.

Photoperiod:
the period of time each day during which an organism receives illumination; day length.

A photoperiod strain needs a change in photoperiod to initiate flower between 10-12 hours darkness depending on strain. I've had some strains flower on 13.5 hours, others needed 12.5, so most just stick to 12/12.

Time to finish depends on how long you veg for, and how long the strain takes to finish flower (which is heavily influenced by environment). These were born 50 days ago into a flowering photoperiod of 12/12. Probably 28-35 days left for one and 49-63 days left for the other.

WilliamB217 said:

Titled

Click to expand...

Is that the name of the led fixture.........?

WilliamB217 said:

Titled. I at first considered light schedule and photoperiod are almost a meaning but now I mixed up. What is photoperiod? when should i begin the photopreriod, any sign of the plants will tell? And how long does a photoperiod take and when photoperiod will end?

I knew i can google for the answer and i did, but i didn't make sense of it totally. Thanks for all answers.

Click to expand...

If You flip say a strain like c99 at two weeks of veg, You could chop it in 2 and a half months. That's a well known 58-60 strain. I don't know anything faster.

HitSolution#9 said:

If You flip say a strain like c99 at two weeks of veg, You could chop it in 2 and a half months. That's a well known 58-60 strain. I don't know anything faster.

Click to expand...

plants won't flower unless they are mature and I've never seen one mature in 2 weeks.

Most C99 is not done in 58-60 days from 12/12, its done in 60-70 days of actual flower time. I've ran a few phenos and crosses as for my experience. I've also followed many C99 grows over the years as its one of my favorite plants.

Loaded question - depends on what the strain is . Some landrace sativas can go an easy 16 weeks + …
Could be anywhere between 8 ( 9 ) weeks to 11. You could play with grows such as 12/12 starts on seed.
Like SOG.

Rule of thumb ….. ” they gets done when they gets done. “
Plant is running show - it doesn’t adhere to your calendar schedule.
Even autos.

Simply put: photoperiod plants, or "photos", require an extended dark period of about 10-12 hours which resembles the light (or, dark) you get in early Fall (depends on where you live but still generally speaking) to prompt flowering.

Flowering itself is strain dependent entirely, for the most part you're looking at 8-12 weeks from the moment you switched to 12/12 lighting for flower. Some landrace varieties can take well into 16-18 weeks if you can believe that, but that's another discussion altogether, lol.