Bongkhananswered grow question 4 years ago Yes they do need bigger pot ; 11 weeks in that 6 to 9 liter pot is too much for it ; say if you went 11 weeks veg and again 10 weeks flowering ; then you shall atleast need 18 liters worth of medium to attain big buds. 5 to 7 gallon pots should be considered enough when growing indoors.