What is the longest flowering time on your 12/12 from seed?

Ganjagrowergu · Jun 5, 2018

I have never completed a 12/12 from seed grow. I hear lots of stuff about how fast the turnover time is. I'm currently running some Columbian red point crosses at day 50 from sprout.
I know that I am probably at least 40-60 days out from harvest. I guess I am just curious if anyone has had a ridiculously long flowering sativa under 12/12 from seed schedule... Results?

PS, I'm glad I am doing this lighting schedule because I was starting to run out of head room, they are tall (no LST or top or fim or defoliation). A couple have real nice main colas the others are kind of growing like wild sativas.

Blew Hiller · Jun 5, 2018

Everyone loves pics! We can give you a better idea on timeline...

Weaselcracker · Jun 5, 2018

you could try cutting your lighting a little. I run my lights on 11/13 so the sativas finish better. I was trying to think if I’ve grown any pure sativas 12/12 from seed - but I haven’t. I’ve always vegged them under 18/6 for at least a couple weeks. The only difference really growing 12/12fs is that they get less daylight during their veg phase so you might end up with shorter plants.
Since 12/12 is normal year-round lighting for an equatorial plant sometimes it’s good to knock the day length back an hour or two if they’re dragging their feet.

Ganjagrowergu · Jun 5, 2018

Blew Hiller said:
Everyone loves pics! We can give you a better idea on timeline...

Sorry, my phone stopped being able post pics at like day 21, it's old.... My strains are f1 nearly pure sativa so I don't have any time frame in mind, except maybe 90-120 days. I have patience. Lol
I am more looking for what kind of flowering times others have had for the heavy sativas.

Ganjagrowergu · Jun 5, 2018

Weaselcracker said:
you could try cutting your lighting a little. I run my lights on 11/13 so the sativas finish better. I was trying to think if I’ve grown any pure sativas 12/12 from seed - but I haven’t. I’ve always vegged them under 18/6 for at least a couple weeks. The only difference really growing 12/12fs is that they get less daylight during their veg phase so you might end up with shorter plants.
Since 12/12 is normal year-round lighting for an equatorial plant sometimes it’s good to knock the day length back an hour or two if they’re dragging their feet.

I've read a lot about that. I flowered one crop of 2-3 different strains on 10/14 cycle a couple years ago, they seemed to finish fast, but I never grow the same strains thus I have no baseline of my own...
Currently I have a kritical kush seedling in the same tent and I worry (not sure why) about the sativa light cycle.
I suppose it wouldn't hurt to shave off an hour. Maybe I will wait til day 60 so the baby has a couple more 12 hour days.

Weaselcracker · Jun 5, 2018

I haven’t grown any Columbian weed- some Panama and Honduran sativas but those were reasonably short flowering like 12 weeks or so.
I grow indicas too that’s why I figured 11/13 was a happy medium. Less light does reduce yield so I don’t want to go lower than that.
I have an Ethiopian and a couple Golden Tiger crosses in flowering now. GT x Thai Stick. The GT is a cross of Thai and Malawi, and Thai Stick i crossed it with was straight Thai.
The GT mom took 14 weeks to flower- Thai Stick was around 16. The two GTxs I have in now were vegged for 7 weeks- are eight+ weeks old now and haven’t sexed yet. I expect trouble vertically.

Ganjagrowergu · Jun 5, 2018

I know, it seemed like stretch was over but they are still creeping vertically, just a little bit at a time. I only have a 60" ceiling and limited footprint. Raised one light again today.
Hoping my chocolate Thai x Columbian red point pollen took well on my purple zebra x Columbian red point, because that purple zebra is stinky stuff and has Thai in it's lineage, can't have the tent open for very long without my home smelling like a greenhouse. Lol.
I've never messed with any "real" sativas.