Changing day/night while maintaining photoperiod (a regeneration inquiry)

[zeem]

Hello,

In the past, I have successfully shifted a plant - which was in flowering photoperiod - from night to day without it regenerating. I did it by making the starting the day about 1 hour later, every 4 days until the 12-hour photoperiod marched around to the other side of the 24-hour clock. That seemed to work without confusing the plant.

I was thinking to do this again, but with plants that are in the vegetative photoperiod. This time, instead of making the environment one hour longer on each change, I should make it one hour shorter; marching backwards.

So, I wanted to ask the more experienced folks:

(A) If this was the way to do this?​

(B) Whether there exists a better way to safely march the veg photoperiod to the other side of the 24-hour clock?​

Is there another way to do it more rapidly while also safely avoiding regeneration?

The reason I ask: I noticed that my strain always regenerates when I moved it to an opposite day/night cycle even when NOT changing the photo period. So I want to stop this off-set day/night cycle for good (originally initiated to get a handle on temperature on a room that got to hot). It's just a PITA in practice, it seems.

Are most strains susceptible to regenerating when the day/night cycle swaps by using a long day (rather than a long night)?

Many Thanks!

 

[SPLFreak808]

I just extend the dark hours another 12 or where you need it, you don't really have any other choice without risking stress. Never had an issue with adding 12hrs of dark.

 

[Skewbong]

I just extend the dark hours another 12 or where you need it, you don't really have any other choice without risking stress. Never had an issue with adding 12hrs of dark.

Agreed. I've done it too, without issue. One minor thing like this won't affect anything, unless its previously stressed from a prune or heavy defoliation, high/low nutes, dry etc. If she's healthy. She's good.

 

[zeem]

I think the observation about the other stress is important. I had a root bound issue due to not transplanting in time.

And on the issue of moving from day to night, perhaps that group was merely partially confused as that group went to three leaves for a number of nodes until 5 finally came back 3 weeks later. It did not regen all the way back to one.

 

[Gemtree]

For veg plants I just have the light on 24/7 for a few days then set it to whatever I want

 

[zeem]

I've noticed few things. Will try to followup with pics.

Only using one strain at this time.

I needed to make space and moved two root bound juniors from a 17 hr indoor to outdoor at a time when daylight was approx 12.5 hr per day. It sent them into flowering but not at first as they needed a 2-3 of week recovery period after being root bound for weeks. Even with increasing daytime periods, they both went into flower.

Plant A seemed very committed to flowering for about 5-6 weeks as the days grew longer. Plant B also started flowering but switched to veg growth after approx mid "week 3". Then it started vigorously increasing in size. Of course, Plant A did not grow larger in size as it was still flowering, staying compact and making increasingly more dense flower for a couple weeks.

Remarkable thing is plant B grew long leaves distinctly slimmer than plant A. I never expected to see long and less wide leaves. Both are from the same mother, which is a very Indica hybrid that looks like chemdog.

Three weeks ago Plant A started regen back to 1 leaf. internode distancing stretching again; making the clusters spread out.

Plant B was sporting 3 leaves (usual is 5 on this strain) but now with 14 hr days has gone to 1 leaf as well. Still longer and less fat than plant A. (same Mom which is crazy! I guess environmental factors can make a strain seem less like itself.)

 

[neville930]

I would give them 24 hours on then put it to whatever time you want