i have heard that some strains you do not top and they produce more and others you do top. does anyone know a list of the strains not to top?
Only thing I can provide is that, like you said, some strains need to be topped. I know blueberry is one, and you cannot get a maximum yield without topping.
How bout you just top some of the same strain and see how they react to it? Then if you decide to clone you will know which plants to use as mothers. Ive never heard of a "list of strains to top/not top". Since theres so many varying phenos out there it would be fairly pointless.