when like 15inches tall. for like 3-4 weeks (germination + preveg included) since seed germinated and planted this all together is vegging 4 me
root cuttings 2-3 weeks,vedge for 3 weeks or 14-16 inches. plants finnish at 3-4 feet tall,depending on strain.
5 weeks is what i like...right about when they are 3 ft tall or so. makes for nice yields come harvest.