If you are worried about stressing the plant when you transplant during flower, you can be ultra paranoid and do what I do. I take my pot (usually a 1 gallon) and I literally just cut the bottom off the pot with either a sharp serrated knife or a Dremmel. I then plop the whole pot right into the dirt. The roots will grow into the new soil. If you want to be super technical, you can actually cut the bottom off and then cut a line down the outside too, splitting the pot. Keep it together though and put it down into the new dirt and then slowly and carefully lift the old pot out from around the plant and discard. Ive done this a # of times with no ill effects and the plants definitely enjoyed it.

For me, the absolute tell tale sign of rootbound is curled under tips of leaves. Unless it does that, I generally assume its a different problem.
Racerx Reviewed by Racerx on . root bound during flowering question how do u know if Ur plant is root bound during the flowering cycle.Ive read if your fan leaves continues to yellow until all the fan leaves are gone and also u can get n deficiency from being root bound.now does that goes with the plant being in budding or is it during veg,plus can i add more dirt in the container during flowering would it effect the plant in anyway ..........reason im asking,well my fan leaves are yellowing bad and dying off,plus half of my soil in the container seems to be Rating: 5