I got one plant that is ready for 12/12, but I still have two small White Widow plants.. I only have 1 light, a 250w AGRO .. Can I grow the White Widows from an very early stage at 12/12, og should i just veg my big plant even more??
You could go either way..really depends on the amount of space you're working with. Just because it's showing pre flowers doesn't mean it needs to go into 12/12 right now. You could keep vegging and let the other catch up..though you will probably want to do some type of LST so you can maintain an even canopy between all 3 plants. Or you can just switch to 12/12 now, your WW plants will stretch a little then begin flowering.