Phoenix, AZ: as this region is in close proximity to the US/Mexican border, it is well known that it is a huge drug import hub.
that means the drugs are abundant, and potent. i will make a list.
Marijuana: AZ passed MMJ a few years back, so dank/ kind bud is here in abundance

. But, even before MMJ was passed, dank was around in abundance.
Cocaine: Cocaine is here in abundance, and it is quite potent. On the streets, you will only be able to find crack. it is generally strong. its rare to find weak stuff or fake stuff. Although there is no cocaine powder to be found on the streets, it can still be acquired, if you have a connection's #
Heroin: Heroin in Phoenix is abundant and very potent

it is of the black tar variety, however it is still very potent. In a non tolerant user, a .1 can be lethal or can make one dangerously sick. its that good. in a tolerant user, such as myself, a .1 will have me on the nod. Heroin use is on the rise in Maricopa County as is the potency
Crystal Methamphetamines: this drug is extremely potent, and here in abundance as well. it is of the shard variety typically, although it can be found in powder form. generally powder form is less potent, more cut than straight shards. a hit of shards will have you spun the fuck out and awake for a day or two. very powerfull drug, very addictive. of all the drugs, shards is the most powerfull, as a hit will have you high for up to a day.
in conclusion, drugs of all kinds are here in Phoenix, and they are all extremely potent, due to the US/Mexican border's close proximity.