Marijuana potency can vary greatly from different strain or types of marijuana. The potency of the marijuana seeds you decide to buy, is one big factor on which strain of cannabis to grow. That is not to say that the higher the potency of the marijuana strain the better the marijuana. It simply means that cannabis potency is a factor when deciding to grow marijuana.
Potency is the amount of THC(Tetrahydrocannabinol ) present in mature marijuana buds. This amount is measured in percent and decides the saturated amount present, and can indicate a relative strength of a particular cannabis strain. THC in most marijuana types can range from25%. Growing the highest potency marijuana is not always the optimal idea. Some other factors to consider would be price, difficultly, yield and effect.
Some high potency marijuana strains are Medijuana, White Widow, Supernova a.k.a. Chronic.