Amount of pot from 1 plant?

I am gonna start growing once I get my new apartment...theres a little spot on the rooftop thats perfect. Whats a good guesstimate on what I could get off of one plant?

 

all depends on what your growing(strain) and wit what!

 

Little spots dont generate yield.

Small 2 foot quick grow and bloom will get ya quarter or so. 6 foot bushy long grow will get ya 1.5-3oz well thats in the uk but like been said strain is important but so is skill (so all is not lost).

 

Ok thanks man. So I can probably assume I can get atleast a quarter to a 1/2.