In discussing decaffeinated coffee, we should first bring awareness o the fact that arabic beans are 50% lower in caffeine that robusta beans to start -- lower priced "canned coffees" are actually higher in caffeine than high grown arabica specialty brews! AND, dark roasting actually reduces the level of caffeine!
We haven't been able to "grow" decaf trees YET, although, they're working on it. After beans are harvested, they are taken to decaffeination plants for processing. Decaffeination processes generally remove 50% of the caffeine and with that goes 50% of the aroma and taste. We try to find coffees that are rich enough and flavorful enough that the effect will be minimized.
Colombian Decaf
"The richest coffee in the world ".....98% caffeine free. Good flavor and aroma persist, and the full body of the Colombian Excelso bean comes through to make it hard for most novice coffee drinkers to believe that they are actually drinking decaf!