Daylight question...

I have a question and appreciate all feedback. I currently have my plants vegging 18 6 indoors and plan to transplant outdoors in a couple weeks. The question is, since the daylight hours outdoors will only be 13.5 hours when I put them out, will this induce flowering? Should I slowly scale back my indoor lights on time a little bit each day till I take outdoors to try and lessen the stress or will the be fine to just put out? Seems like going from 18 6 to 14 10 could throw them into flower. Thanks

Grow....

William1976 said:

I have a question and appreciate all feedback. I currently have my plants vegging 18 6 indoors and plan to transplant outdoors in a couple weeks. The question is, since the daylight hours outdoors will only be 13.5 hours when I put them out, will this induce flowering? Should I slowly scale back my indoor lights on time a little bit each day till I take outdoors to try and lessen the stress or will the be fine to just put out? Seems like going from 18 6 to 14 10 could throw them into flower. Thanks

Grow....

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Gradual is better. If you don;t know exactly when your trigger point is, I would wait till 14 hour days. {in a general sense} Where are you at? You can check you length of day on this site. Click in your city, if it's not Atlanta. {14 hour days in Atlanta start May 19}

https://www.timeanddate.com/sun/usa/atlanta

Figure out when you are going outside, then cut back the hours a little at a time so you are at 14 hours when the sun is.

sandhill larry said:

Gradual is better. If you don;t know exactly when your trigger point is, I would wait till 14 hour days. {in a general sense} Where are you at? You can check you length of day on this site. Click in your city, if it's not Atlanta. {14 hour days in Atlanta start May 19}

https://www.timeanddate.com/sun/usa/atlanta

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I'm in indiana. Problem is, I got 30 plants and they are outgrowing their space in the basement. I gotta get them out soon.

sandhill larry said:

Figure out when you are going outside, then cut back the hours a little at a time so you are at 14 hours when the sun is.

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Looks like 13.25 hrs daylight 1 hr twilite

William1976 said:

I'm in indiana. Problem is, I got 30 plants and they are outgrowing their space in the basement. I gotta get them out soon.

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You can risk the early flower if you have to go out in the bush. But if you can keep them in the yard for a few more weeks, a couple of CFL's an hour before daylight or after dark will keep them in veg.

William1976 said:

Looks like 13.25 hrs daylight 1 hr twilite

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You need to go by length of day for figuring. The time between sunrise and sunset.

If they do happen to begin flower, won't they revert back to veg as days lengthen? Could this have adverse effects on plants?

William1976 said:

If they do happen to begin flower, won't they revert back to veg as days lengthen? Could this have adverse effects on plants?

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Correct! But you will notice some funky twisting and curling of leaves, but they do come around. It's not the best case senario for the plants.. but you need to do what you need to do!

Reveg really sucks IMO. I have strains that can go out in early May and I have a strain that can't go out til the second week of June. Like was already said a simple. CFL in the back porch light will work just fine. Definitely wean them down to 15 hours.

Reveg does slow things down a bit but at 13.5 plus twilight you should be OK. I wouldn't image the plants would respond to the full hr or so of twilight as there must be a diminishing return cut off but 30min extra would be a fairly safe bet.

I'm also wondering when to put out my indoor started seedlings for summer.
The strain is south African sativas..... they flower pretty much as long as the longest thing you tried flowering.
We have no frost, and it is a temperate subtropical zone, so even if it gets cool on the mornings there can be a 20C swing in a day.

I have always grown outdoors, Maybe someone could point me in the right direction.
First 12 hour day Sept 19 12h2m0s
Longest day Dec 21 14h24m
Return to 12 or fewer hour days, March 24 11h59m
I normally seeded outdoors in Sept, but these last few years the weeds started flowing outdoors in Aug.
Harvest is beginning to mid-April