Could they be rootbound? Sounds crazy but when you transplant in stages the roots fill the container then build a little on the side, you transplant and they6 move out again and build on the sides you transplant again same thing. When you start in one pot the roots have room to stretch and grow without piling up somewhere till they finally reach the container and pile up while there is lots of usable soil in the middle, it wasn't used at the time because it wasn't needed. See if you can ggently pop on out of the pot oa little or look through the holes on the bottom and see how your roots are doing.
Chronic Chrissy Reviewed by Chronic Chrissy on . Only using one container... So I hear many mention they're always re-potting. Originally when I decided to give mj a try, I thought the less the plant was moved around and messed with, the less stress would be created and the plant would be healthier. But it made me view drainage as even more important if indeed I was to germinate in a large container and keep it there until harvest. So I gave it a shot; used deep containers to allow for serious root development, provided a decent layer of gravel on the bottom Rating: 5