Quality Medicine

Are you talking about cannabis medicine?  I would say, grown clean.  No chemicals. No residue from making the oil. And no mold and stored correctly.  And in my opinion, grown with sunshine and love. Just like when one cooks a meal with love, it tastes better. 

 

Not an expert here and not an owner but I imagine you have to look at your definition of what "better" means.  
 
I feel like a high quality soil, reputable seeds, no pesticides, given fresh water and sun, kind of plant, is what I want but some feel like as long as it's strong in psychoactive and has big, good looking buds, that constitutes a better product.
 
 I think it helps to talk to your caregiver/ dispensary owner and ask a lot of questions to find what it is you are trying to get from the plant.  Is it for recreating or for medicine?
 
 Personally, I feel, pretty much, all non-pesticide bud, whether it is good quality or mediocre, is going to be therapeutic so don't get too hung up on how medicinal a certain strain is. It's all marijuana.  Just like cheap wine will relax you as does more expensive wine.  But the more expensive wine will probably taste better and not give you as much of a hang over. And if grown without toxic chemicals, I feel, therapeutically speaking, will give you the best results for your health.   As consumers of cannabis, I feel it's super important we fight for no chemicals on our medicine.  

 

Different crops from the same grower can be different so I have no clue what you are getting at.  
 
TRY small amounts (That is why they sell grams) and figure out yourself.  I have been to a dispensary where the quality of the bud looked poor.  We just kept on looking and didn't even bother.  If one place has 1% less CBD than the other from the same exact seeds could you tell?  I bet not.  You should be more concerned it came from healthy plants that are not covered in pesticides or other contaminants.

 

Grow your own if you are that concerned. How do you know anything is what they say it is?