80% genetics, 20% environment.

The above ratio looks quite sad to most without access to brand name seeds from banks and such.

However, the environment is what allows the genetics to reach their full potential.

The majority of the erb in my area is kinda gross compressed mexi-brick with many, many seeds. These are the only seeds I have access to.

However, I grow sticky, crystally sinsemilla.

Merely by growing a sinsemilla crop, the potency is automatically doubled (at least, if not tripled) from the original bag of erb, which was full of seeds.

Then remove the variables of poor handling and compression etc and the potency is further increased.

We go from seedy mexi-brick with very low potency (probably 2-3% THC?) and a very nasty taste (from contaminants to pesticides, etc)

to a nice sinsemilla crop with triple or quadruple the potency and a great taste, merely by improving the environment.

Starting with brand name genetics is great if you can.

But if all you have is crap weed, and crap weed is all you are conditioned to smoking, you will definitely be in for a nice surprise if you grow those crap weed seeds out correctly with lots of TLC.

peace