A female will typically do some "rapid growth" when you first cut back the light, but before it starts flowering. This phase can cause growth to get outta hand if you don't watch it, and can certainly give 3x the pre-flower height. After actual flowering starts, the added height is more of bud production than veggie growth. #x is possible there, but I find 2x or less to be more typical.
rodekyll Reviewed by rodekyll on . growth during flowering i have a plant thats about 1 foot and a half tall i the forst week of flowering. i heard that plants double in size during flowering will it be 3 feet in the next 7 weeks? Rating: 5