you can actually start flowering from seedling if you really want, people have tried it....

but the basic rule of thumb is not to induce flowering until you start to see the plants preflowers - 4-6 weeks usually...but you can do it before if you'd like....

and yes to keep a plant in vegging mode just keep the light cycle 18/6. the longer you veg, the larger the plant
FireTheft Reviewed by FireTheft on . Force flowering? I watched a mad grow log on youtube which in parts went for 90 minutes, but very detailed and good. Now, as many of you do and what he did, cloning. But what confuses me about this, how do you know when a plant is ready for flowering? If i dont want my plant to flower do I just keep it in a 18 hour light room? If so, how do i know when my plant is ready to be moved into the 12 hour room? or Whats the smallest amount of time it has to be in the 18 hour room, i'd like to experiment Rating: 5