When to begin flowering?

How early can you begin the flowering process?

whenever your ready ,you can start them on 12/12 from the start if u want to . i like to get them to about 18" then flower

starting them at 12/12 will not start flowering right away but as soon as the plant is ready to flower it will. the plants have to be mature enough to flower. when the leaves stop growing out in pairs and start growing on alternate sides is 1 indication it is ready. to get the most from them,allowing them to veg until they are about 1/2 the height of your room is a good idea. once flowering starts, they will double in size. the bigger the plant the more flowers you will get.