Do plants still have a day/night cycle under 24/7 lights?

A

A.k.a

Well-Known Member
I’ve had my plants vegging under 24/7 for a month now. About a week ago they started to always be a little droopy early in the morning when I checked on them but a few hours later they all perk back up.

Is it possible they’re determining when night is by slight temperature swings in the room? They’ve been 75-85 during the day and 68-75 at night just from the natural swings.

It’s getting hot enough that I’m gonna need to switch to controlling the temperature soon so I’m curious if that’ll stop the morning drooping too.
 
Wastei

Wastei

Well-Known Member
A.k.a said:
I’ve had my plants vegging under 24/7 for a month now. About a week ago they started to always be a little droopy early in the morning when I checked on them but a few hours later they all perk back up.

Is it possible they’re determining when night is by slight temperature swings in the room? They’ve been 75-85 during the day and 68-75 at night just from the natural swings.

It’s getting hot enough that I’m gonna need to switch to controlling the temperature soon so I’m curious if that’ll stop the morning drooping too.
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No.
 
R

RadicalRoss

Well-Known Member
Maybe? It seems like they still run through some sort of cycle, like you said they appear droopy at times. I'm not sure if this is related to temperature or what, but it does seem like all my plants go through their droopy times around the same perioud.
 
SnoopyDoo

SnoopyDoo

Well-Known Member
A.k.a said:
I’ve had my plants vegging under 24/7 for a month now. About a week ago they started to always be a little droopy early in the morning when I checked on them but a few hours later they all perk back up.

Is it possible they’re determining when night is by slight temperature swings in the room? They’ve been 75-85 during the day and 68-75 at night just from the natural swings.

It’s getting hot enough that I’m gonna need to switch to controlling the temperature soon so I’m curious if that’ll stop the morning drooping too.
Click to expand...
Sort of. The plants reach a DLI at which point they won't continue to photosynthesis. That's why your plants are droopy, they were basically done for the day. It's not uncommon to see plants droop on a 18/6 cycle for the same reason - they've had enough light for day. You're wasting power by leaving the lights on 24/7, I'd switch to 18/6 if you can.
 
kingromano

kingromano

Well-Known Member
use 6 on/2 off for the best result

plants droop at th end of a 18/6 cycle because of the circadian rythm. it's normal
i always turned off 1 light on 2 the 3/4 last hours when i was doing 18/6. to imitate nature in some way..

but indoor you have total control

try 6/2 ;)
 
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