i start with a root stimulater when my seedlings 10 days old ,then after 2 weeks of that: (1 feeding a week) i will move on 2 blood meals and fish meals when the plant is in its veg stage.
i grew 2 pineapple punch plants outside (14 feet tall) ,they are a sativa dominant,they took a little longer (10weeks) but it was well worth it ,had a great cerebral high.