Originally Posted by Brick Top 
What in the wide, wide world of sports is the; "height of the seed" and what relevance does it have to when to begin flowering?
I started to get paranoid I posted that earlier this morning after I had been up for 24 hours. Nice response, I am laughing in my chair right now.
Sativas I personally wouldn't go vegging past 1 foot at maximum because the plant could potentially triple in size in the 1st 4 weeks of flowering & you could have plants sprawling along your ceiling at that rate.
So often I see one of two questions, that are more or less the same thing, being asked, those being, what is the best height to veg to or how many days/weeks is it best to veg?
It is not something that is really answerable in height or number of days/weeks considering all the variables involved.
When growing inside the two basics are, it is pointless to veg a plant to a height where once it stretches in flower that it will outgrow the lighting capabilities of someone's setup leaving the lower portion of the plant in a low light/inadequate light situation and it is not at all wise to veg a plant to a height where when it stretches in flower you will run out of usable growing height.
To figure out when to begin flower a person needs to know their setups true capabilities, their actual amount of usable growing height and then have a fairly decent idea of what amount of flowering stretch will occur and then factor all that together and come up with a correct height for their system/setup at which to begin flowering.
Considering all the variables there is not only no singular answer to the question(s), there is not even a general height or days/weeks range that will be accurate in most cases let alone all cases. One might at best only be accurate for a small percentage of cases.
The correct answer to the question(s) is something each person has to figure out for themselves, for their setup, situation and conditions and should have already done so before they even popped their beans.
Well here are a few pictures of height of plant and also preflower hairs my plant is telling me it is time because I haven't changed her lighting schedule at all shes still 24/7 for the last month and a half so after today she goes slipping into Darkness muahaha.
