How can you tell weed is weed?

the smell, if you cant smell the ganj through the bag/plastic w.e then it's pretty weak stuff : D xx Usually if it's a lighter green then it's better. More orange hairs means it's better, because the...

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It stinks, it has hairs on it. And it has small white crystals called keif on it.

Yes.

This is stupid question as THC only comes from weed and it depends entirely on the type of weed and how its grown