I doubt any cannabis plant will be sexually mature enough at 2 weeks to get confused but there will be a bunch of messed up plants in 4 to 8 weeks.
Every year.
Pick a date you want to put plants out. Look up sunlight hours. Look for increasing sunlight hours. Match your tent to the hours of the date you will set out. Start hardening but continue with total hours in light.
After a week to 10 days put outside and hope.
Note+++ does not grow pot outside but 35 years gardener.

Are we talking about seedlings or clones? There's a big difference between the two due to sexual maturity.

I run my seedlings and clones at 24/0 for the first two weeks. After that, I switch the lights to 16/8. Just personal preference; you could do 18/6, or 20/2, or whatever. Anything over 15 hours of light a day is fine to keep them in veg. Where I live in SoCal, the longest day of the year is still below 14:30 hours a day.

When I'm done vegging them out, I put them outside in the ground to flower. I like to run supplemental lighting outside to keep them vegging for at least another 2 weeks to let their roots spread out and get established. The supplemental lighting keeps them on the 16/8 veg schedule.

The only time I put plants out without supplemental lighting is between Mother's Day and the summer solstice. Any other time of year the great outdoors is one big flower room here.

I don't do any light cycle matching for outside. No ramping up or down. The juice is not worth the squeeze, as they say.

As far as hardening off goes, when seedlings reach a week in age they go outside as often as my schedule allows. Just put them in a place where they'll receive a mix of shade and light throughout the day. Always bring them back inside before sunset during this time.

I match the tent environment with the outside environment. Also, like @JIMKSI64, I put them out while the daylight is still increasing.

The temperature is important, too. Overnight lows below 50º F can be troublesome.

Where I live, our maximum daylight is about 16 hours. I've started using that in my tents during vegetation and the plants have done well.

I start at 16/8, then move to 14/10 before they go outside. From seed

I start at 16/8, then move to 14/10 before they go outside. From seed

Hossgrows said:

I start at 16/8, then move to 14/10 before they go outside. From seed

Click to expand...

14/10 will cause most hybrids and indicas to start flowering

GNick55 said:

14/10 will cause most hybrids and indicas to start flowering

Click to expand...

Not seet anything as for flowering.
I won't say my times are exactly, cause I'm the timer switch that turns the lights on/off, but it's close.

Outside it'll be about 14 1/2 hrs daylight, increasing 1 minute a day, once transplanted. That's what I'm working with.

Wouldn't going from 16/8 indoors to outside screw with them as well.

I'm more closer to 15/9 than 14/10.

Lights on around 6am, lights off 9 pm. Sometimes later, if I'm busy with something and forget, cause I'm stoned.. But roughly in that ball park.

munchie725 said:

My idea is to have them under grow lights 24hr until they're about two weeks old (May 1st) and then start hardening them off until they're outside from an hour after sun raise until the sun starts setting and then putting them in the grow tent under the grow lights before planting them outside. Would that work or would the sudden change from 24 hour to 14-15 hour cause them to veg or herm? If it would cause issues, what's the most amount of light I should give them each day? Also, during this what's basically a month long hardening off, can I still top the plants once they have 5-6 sets of true leaves?

Click to expand...

That should work fine, but I probably wouldn’t run them 24 hours the whole time. Most people have better luck with 18/6 or 20/4 for seedlings and veg. Plants do use the dark period for root development and general recovery, and going from 24 hours straight down to natural daylight can stress some genetics more than necessary.

The drop from 24h to 14–15h usually won’t make photoperiod plants instantly flower or herm by itself, especially if they’re still young and going outside near peak spring daylight. The bigger issue is just avoiding unnecessary stress during acclimation. If they’re autos, it matters even less since they’ll flower on age rather than light schedule.

Your hardening-off plan is basically solid though. Start with shaded or indirect outdoor light for a few hours, then gradually increase direct sun and wind exposure over 1–2 weeks. Full indoor intensity + full outdoor sun immediately can fry seedlings fast.

And yes, you can absolutely top during that period once they’ve got 5–6 true nodes and are healthy. I’d just avoid topping on the same day you significantly increase outdoor exposure. Give them a couple days between stress events and they’ll handle it much better.

In my yrs of growing yes but plants like dark to .the same as you need steep inlets it is auto then it don't matter what you do two and a half all you get