When should I start pulling tarps?

[Mycriot]

This Is my first time running a light deprivation and my plants are in week four of flower. The days are now just over 12 hours long. At what point will the plants start to reveg? Should I start pulling tarps now?

 

[mysticepipedon]

Somewhere after 13 hour days, so I'd wait a couple more weeks.

 

[zigzagtop]

From my experience, once a plant is in full flower, I mean Bart Simpsons )I call them) all over about a month into flowering, you'll need a lot of light to mess things up...like 18 to 24 hours of light for it to reveg. Folks mention foxtails, which is also possible, but in my opinion, anything less than 14 hours of light per day is fine. Although, when in flower stage, the more darkness the better up to a point, as it stresses the plant into producing more resins and THC and finishing a bit earlier with extra darkness. Almost plant psychology...almost.

 

[zigzagtop]

You really don't have to at 13 hours a day of light...it won't hurt, but from my years of growing experiences, and believe me, I messed up more than enough times, you don't have to. Up to you.