Oh dear, all the above replies fail to address the question correctly. MJ responds to changes in the length of daylight. It is now April, and assuming that it is to be kept outside, that lil plant has a lot more growing to do before it will even begin to flower, when the plant detects that the length of day is decreasing, in about August. At the moment the length of day is INcreasing, and will continue to do so until 21 June.
So put it in a MUCH bigger pot, with lots of nutes, this year I am using the above size, 11 UK gallons, more in US gallons. Over the next few months you will see lots of vegetative growth, the bigger the pot the better the veg growth and the higher the yield. It has started early, so no reason you could not get a pound of dried bud off that lil babe.
My plants for this year have only just germinated, I always start about now, as I grow only outdoors and I can now guarantee sunshine until October. I got 50 ounces of dried bud from 4 plants last year, one lady gave me 16.3 ounces.